[llvm] r330645 - [X86][AArch64][NFC] Add tests for masked merge unfolding
Roman Lebedev via llvm-commits
llvm-commits at lists.llvm.org
Mon Apr 23 13:38:43 PDT 2018
Author: lebedevri
Date: Mon Apr 23 13:38:42 2018
New Revision: 330645
URL: http://llvm.org/viewvc/llvm-project?rev=330645&view=rev
Log:
[X86][AArch64][NFC] Add tests for masked merge unfolding
Summary:
This is [[ https://bugs.llvm.org/show_bug.cgi?id=37104 | PR37104 ]].
[[ https://bugs.llvm.org/show_bug.cgi?id=6773 | PR6773 ]] will introduce an IR canonicalization that is likely bad for the end assembly.
Previously, `andl`+`andn`/`andps`+`andnps` / `bic`/`bsl` would be generated. (see `@out`)
Now, they would no longer be generated (see `@in`).
I'm guessing `llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp` should be able to unfold this.
Reviewers: spatel, craig.topper, RKSimon, javed.absar
Reviewed By: spatel
Subscribers: nemanjai, rengolin, javed.absar, kristof.beyls, llvm-commits
Differential Revision: https://reviews.llvm.org/D45563
Added:
llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-innerouter.ll
llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbits.ll
llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll
llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-lowhigh.ll
llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-variablemask.ll
llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-innerouter.ll
llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbits.ll
llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll
llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-lowhigh.ll
llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-variablemask.ll
Added: llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-innerouter.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-innerouter.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-innerouter.ll (added)
+++ llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-innerouter.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,271 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; X: [byte3] [byte0]
+; Y: [byte2][byte1]
+
+define i8 @out8_constmask(i8 %x, i8 %y) {
+; CHECK-LABEL: out8_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: lsr w8, w0, #2
+; CHECK-NEXT: bfi w1, w8, #2, #4
+; CHECK-NEXT: mov w0, w1
+; CHECK-NEXT: ret
+ %mx = and i8 %x, 60
+ %my = and i8 %y, -61
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16_constmask(i16 %x, i16 %y) {
+; CHECK-LABEL: out16_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: lsr w8, w0, #4
+; CHECK-NEXT: bfi w1, w8, #4, #8
+; CHECK-NEXT: mov w0, w1
+; CHECK-NEXT: ret
+ %mx = and i16 %x, 4080
+ %my = and i16 %y, -4081
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32_constmask(i32 %x, i32 %y) {
+; CHECK-LABEL: out32_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: lsr w8, w0, #8
+; CHECK-NEXT: bfi w1, w8, #8, #16
+; CHECK-NEXT: mov w0, w1
+; CHECK-NEXT: ret
+ %mx = and i32 %x, 16776960
+ %my = and i32 %y, -16776961
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64_constmask(i64 %x, i64 %y) {
+; CHECK-LABEL: out64_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: lsr x8, x0, #16
+; CHECK-NEXT: bfi x1, x8, #16, #32
+; CHECK-NEXT: mov x0, x1
+; CHECK-NEXT: ret
+ %mx = and i64 %x, 281474976645120
+ %my = and i64 %y, -281474976645121
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8_constmask(i8 %x, i8 %y) {
+; CHECK-LABEL: in8_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0x3c
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, 60
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16_constmask(i16 %x, i16 %y) {
+; CHECK-LABEL: in16_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xff0
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, 4080
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32_constmask(i32 %x, i32 %y) {
+; CHECK-LABEL: in32_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff00
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64_constmask(i64 %x, i64 %y) {
+; CHECK-LABEL: in64_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor x8, x0, x1
+; CHECK-NEXT: and x8, x8, #0xffffffff0000
+; CHECK-NEXT: eor x0, x8, x1
+; CHECK-NEXT: ret
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, 281474976645120
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+
+; ============================================================================ ;
+; Constant Commutativity tests.
+; ============================================================================ ;
+
+define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_0_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff00
+; CHECK-NEXT: eor w0, w1, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_1_0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff00
+; CHECK-NEXT: eor w0, w8, w0
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_1_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff00
+; CHECK-NEXT: eor w0, w0, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+
+define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-LABEL: in_complex_y0_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, #0xffff00
+; CHECK-NEXT: eor w0, w9, w8
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-LABEL: in_complex_y1_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, #0xffff00
+; CHECK-NEXT: eor w0, w8, w9
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+
+; Multi-use tests.
+
+declare void @use32(i32) nounwind
+
+define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-LABEL: in_multiuse_A_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w20, w8, #0xffff00
+; CHECK-NEXT: mov w0, w20
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-LABEL: in_multiuse_B_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w0, w0, w1
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: and w20, w0, #0xffff00
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+; Various bad variants
+
+define i32 @n0_badconstmask(i32 %x, i32 %y) {
+; CHECK-LABEL: n0_badconstmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: mov w9, #256
+; CHECK-NEXT: movk w9, #65280, lsl #16
+; CHECK-NEXT: and w8, w0, #0xffff00
+; CHECK-NEXT: and w9, w1, w9
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, 16776960
+ %my = and i32 %y, -16776960 ; instead of -16776961
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: n1_thirdvar_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff00
+; CHECK-NEXT: eor w0, w8, w2
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbits.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbits.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbits.ll (added)
+++ llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbits.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,277 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; X: [bit2] [bit0]
+; Y: [bit3] [bit1]
+
+define i8 @out8_constmask(i8 %x, i8 %y) {
+; CHECK-LABEL: out8_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: mov w8, #85
+; CHECK-NEXT: mov w9, #-86
+; CHECK-NEXT: and w8, w0, w8
+; CHECK-NEXT: and w9, w1, w9
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i8 %x, 85
+ %my = and i8 %y, -86
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16_constmask(i16 %x, i16 %y) {
+; CHECK-LABEL: out16_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: mov w8, #21845
+; CHECK-NEXT: mov w9, #-21846
+; CHECK-NEXT: and w8, w0, w8
+; CHECK-NEXT: and w9, w1, w9
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i16 %x, 21845
+ %my = and i16 %y, -21846
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32_constmask(i32 %x, i32 %y) {
+; CHECK-LABEL: out32_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w0, #0x55555555
+; CHECK-NEXT: and w9, w1, #0xaaaaaaaa
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, 1431655765
+ %my = and i32 %y, -1431655766
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64_constmask(i64 %x, i64 %y) {
+; CHECK-LABEL: out64_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and x8, x0, #0x5555555555555555
+; CHECK-NEXT: and x9, x1, #0xaaaaaaaaaaaaaaaa
+; CHECK-NEXT: orr x0, x8, x9
+; CHECK-NEXT: ret
+ %mx = and i64 %x, 6148914691236517205
+ %my = and i64 %y, -6148914691236517206
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8_constmask(i8 %x, i8 %y) {
+; CHECK-LABEL: in8_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: mov w9, #85
+; CHECK-NEXT: and w8, w8, w9
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, 85
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16_constmask(i16 %x, i16 %y) {
+; CHECK-LABEL: in16_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: mov w9, #21845
+; CHECK-NEXT: and w8, w8, w9
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, 21845
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32_constmask(i32 %x, i32 %y) {
+; CHECK-LABEL: in32_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0x55555555
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64_constmask(i64 %x, i64 %y) {
+; CHECK-LABEL: in64_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor x8, x0, x1
+; CHECK-NEXT: and x8, x8, #0x5555555555555555
+; CHECK-NEXT: eor x0, x8, x1
+; CHECK-NEXT: ret
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, 6148914691236517205
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+
+; ============================================================================ ;
+; Constant Commutativity tests.
+; ============================================================================ ;
+
+define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_0_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0x55555555
+; CHECK-NEXT: eor w0, w1, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_1_0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0x55555555
+; CHECK-NEXT: eor w0, w8, w0
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_1_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0x55555555
+; CHECK-NEXT: eor w0, w0, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+
+define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-LABEL: in_complex_y0_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, #0x55555555
+; CHECK-NEXT: eor w0, w9, w8
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-LABEL: in_complex_y1_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, #0x55555555
+; CHECK-NEXT: eor w0, w8, w9
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+
+; Multi-use tests.
+
+declare void @use32(i32) nounwind
+
+define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-LABEL: in_multiuse_A_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w20, w8, #0x55555555
+; CHECK-NEXT: mov w0, w20
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-LABEL: in_multiuse_B_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w0, w0, w1
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: and w20, w0, #0x55555555
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+; Various bad variants
+
+define i32 @n0_badconstmask(i32 %x, i32 %y) {
+; CHECK-LABEL: n0_badconstmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: mov w9, #43691
+; CHECK-NEXT: movk w9, #43690, lsl #16
+; CHECK-NEXT: and w8, w0, #0x55555555
+; CHECK-NEXT: and w9, w1, w9
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, 1431655765
+ %my = and i32 %y, -1431655765 ; instead of -1431655766
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: n1_thirdvar_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0x55555555
+; CHECK-NEXT: eor w0, w8, w2
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll (added)
+++ llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,273 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; X: [bit 3210]
+; Y: [bit 7654]
+
+define i8 @out8_constmask(i8 %x, i8 %y) {
+; CHECK-LABEL: out8_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: bfxil w1, w0, #0, #4
+; CHECK-NEXT: mov w0, w1
+; CHECK-NEXT: ret
+ %mx = and i8 %x, 15
+ %my = and i8 %y, -16
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16_constmask(i16 %x, i16 %y) {
+; CHECK-LABEL: out16_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: mov w8, #3855
+; CHECK-NEXT: mov w9, #-3856
+; CHECK-NEXT: and w8, w0, w8
+; CHECK-NEXT: and w9, w1, w9
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i16 %x, 3855
+ %my = and i16 %y, -3856
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32_constmask(i32 %x, i32 %y) {
+; CHECK-LABEL: out32_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w0, #0xf0f0f0f
+; CHECK-NEXT: and w9, w1, #0xf0f0f0f0
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, 252645135
+ %my = and i32 %y, -252645136
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64_constmask(i64 %x, i64 %y) {
+; CHECK-LABEL: out64_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and x8, x0, #0xf0f0f0f0f0f0f0f
+; CHECK-NEXT: and x9, x1, #0xf0f0f0f0f0f0f0f0
+; CHECK-NEXT: orr x0, x8, x9
+; CHECK-NEXT: ret
+ %mx = and i64 %x, 1085102592571150095
+ %my = and i64 %y, -1085102592571150096
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8_constmask(i8 %x, i8 %y) {
+; CHECK-LABEL: in8_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xf
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, 15
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16_constmask(i16 %x, i16 %y) {
+; CHECK-LABEL: in16_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: mov w9, #3855
+; CHECK-NEXT: and w8, w8, w9
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, 3855
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32_constmask(i32 %x, i32 %y) {
+; CHECK-LABEL: in32_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xf0f0f0f
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64_constmask(i64 %x, i64 %y) {
+; CHECK-LABEL: in64_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor x8, x0, x1
+; CHECK-NEXT: and x8, x8, #0xf0f0f0f0f0f0f0f
+; CHECK-NEXT: eor x0, x8, x1
+; CHECK-NEXT: ret
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, 1085102592571150095
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+
+; ============================================================================ ;
+; Constant Commutativity tests.
+; ============================================================================ ;
+
+define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_0_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xf0f0f0f
+; CHECK-NEXT: eor w0, w1, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_1_0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xf0f0f0f
+; CHECK-NEXT: eor w0, w8, w0
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_1_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xf0f0f0f
+; CHECK-NEXT: eor w0, w0, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+
+define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-LABEL: in_complex_y0_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, #0xf0f0f0f
+; CHECK-NEXT: eor w0, w9, w8
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-LABEL: in_complex_y1_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, #0xf0f0f0f
+; CHECK-NEXT: eor w0, w8, w9
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+
+; Multi-use tests.
+
+declare void @use32(i32) nounwind
+
+define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-LABEL: in_multiuse_A_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w20, w8, #0xf0f0f0f
+; CHECK-NEXT: mov w0, w20
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-LABEL: in_multiuse_B_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w0, w0, w1
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: and w20, w0, #0xf0f0f0f
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+; Various bad variants
+
+define i32 @n0_badconstmask(i32 %x, i32 %y) {
+; CHECK-LABEL: n0_badconstmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: mov w9, #61681
+; CHECK-NEXT: movk w9, #61680, lsl #16
+; CHECK-NEXT: and w8, w0, #0xf0f0f0f
+; CHECK-NEXT: and w9, w1, w9
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, 252645135
+ %my = and i32 %y, -252645135 ; instead of -252645136
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: n1_thirdvar_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xf0f0f0f
+; CHECK-NEXT: eor w0, w8, w2
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-lowhigh.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-lowhigh.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-lowhigh.ll (added)
+++ llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-constmask-lowhigh.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,264 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; X: [byte1][byte0]
+; Y: [byte3][byte2]
+
+define i8 @out8_constmask(i8 %x, i8 %y) {
+; CHECK-LABEL: out8_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: bfxil w1, w0, #0, #4
+; CHECK-NEXT: mov w0, w1
+; CHECK-NEXT: ret
+ %mx = and i8 %x, 15
+ %my = and i8 %y, -16
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16_constmask(i16 %x, i16 %y) {
+; CHECK-LABEL: out16_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: bfxil w1, w0, #0, #8
+; CHECK-NEXT: mov w0, w1
+; CHECK-NEXT: ret
+ %mx = and i16 %x, 255
+ %my = and i16 %y, -256
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32_constmask(i32 %x, i32 %y) {
+; CHECK-LABEL: out32_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: bfxil w1, w0, #0, #16
+; CHECK-NEXT: mov w0, w1
+; CHECK-NEXT: ret
+ %mx = and i32 %x, 65535
+ %my = and i32 %y, -65536
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64_constmask(i64 %x, i64 %y) {
+; CHECK-LABEL: out64_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: bfxil x1, x0, #0, #32
+; CHECK-NEXT: mov x0, x1
+; CHECK-NEXT: ret
+ %mx = and i64 %x, 4294967295
+ %my = and i64 %y, -4294967296
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8_constmask(i8 %x, i8 %y) {
+; CHECK-LABEL: in8_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xf
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, 15
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16_constmask(i16 %x, i16 %y) {
+; CHECK-LABEL: in16_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xff
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, 255
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32_constmask(i32 %x, i32 %y) {
+; CHECK-LABEL: in32_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64_constmask(i64 %x, i64 %y) {
+; CHECK-LABEL: in64_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: eor x0, x8, x1
+; CHECK-NEXT: ret
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, 4294967295
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+
+; ============================================================================ ;
+; Constant Commutativity tests.
+; ============================================================================ ;
+
+define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_0_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff
+; CHECK-NEXT: eor w0, w1, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_1_0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff
+; CHECK-NEXT: eor w0, w8, w0
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
+; CHECK-LABEL: in_constmask_commutativity_1_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff
+; CHECK-NEXT: eor w0, w0, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+
+define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-LABEL: in_complex_y0_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, #0xffff
+; CHECK-NEXT: eor w0, w9, w8
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-LABEL: in_complex_y1_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, #0xffff
+; CHECK-NEXT: eor w0, w8, w9
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+
+; Multi-use tests.
+
+declare void @use32(i32) nounwind
+
+define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-LABEL: in_multiuse_A_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w20, w8, #0xffff
+; CHECK-NEXT: mov w0, w20
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-LABEL: in_multiuse_B_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w0, w0, w1
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: and w20, w0, #0xffff
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+; Various bad variants
+
+define i32 @n0_badconstmask(i32 %x, i32 %y) {
+; CHECK-LABEL: n0_badconstmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w0, #0xffff
+; CHECK-NEXT: and w9, w1, #0xffff0001
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, 65535
+ %my = and i32 %y, -65535 ; instead of -65536
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: n1_thirdvar_constmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, #0xffff
+; CHECK-NEXT: eor w0, w8, w2
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-variablemask.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-variablemask.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-variablemask.ll (added)
+++ llvm/trunk/test/CodeGen/AArch64/unfold-masked-merge-scalar-variablemask.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,415 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+define i8 @out8(i8 %x, i8 %y, i8 %mask) {
+; CHECK-LABEL: out8:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w0, w2
+; CHECK-NEXT: bic w9, w1, w2
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i8 %x, %mask
+ %notmask = xor i8 %mask, -1
+ %my = and i8 %y, %notmask
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16(i16 %x, i16 %y, i16 %mask) {
+; CHECK-LABEL: out16:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w0, w2
+; CHECK-NEXT: bic w9, w1, w2
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i16 %x, %mask
+ %notmask = xor i16 %mask, -1
+ %my = and i16 %y, %notmask
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: out32:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w0, w2
+; CHECK-NEXT: bic w9, w1, w2
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, %mask
+ %notmask = xor i32 %mask, -1
+ %my = and i32 %y, %notmask
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64(i64 %x, i64 %y, i64 %mask) {
+; CHECK-LABEL: out64:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and x8, x0, x2
+; CHECK-NEXT: bic x9, x1, x2
+; CHECK-NEXT: orr x0, x8, x9
+; CHECK-NEXT: ret
+ %mx = and i64 %x, %mask
+ %notmask = xor i64 %mask, -1
+ %my = and i64 %y, %notmask
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8(i8 %x, i8 %y, i8 %mask) {
+; CHECK-LABEL: in8:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, w2
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, %mask
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16(i16 %x, i16 %y, i16 %mask) {
+; CHECK-LABEL: in16:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, w2
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, %mask
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: in32:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, w2
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64(i64 %x, i64 %y, i64 %mask) {
+; CHECK-LABEL: in64:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor x8, x0, x1
+; CHECK-NEXT: and x8, x8, x2
+; CHECK-NEXT: eor x0, x8, x1
+; CHECK-NEXT: ret
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, %mask
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+; ============================================================================ ;
+; Commutativity tests.
+; ============================================================================ ;
+define i32 @in_commutativity_0_0_1(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: in_commutativity_0_0_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w2, w8
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0 ; swapped
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_commutativity_0_1_0(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: in_commutativity_0_1_0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, w2
+; CHECK-NEXT: eor w0, w1, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+define i32 @in_commutativity_0_1_1(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: in_commutativity_0_1_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w2, w8
+; CHECK-NEXT: eor w0, w1, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0 ; swapped
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+define i32 @in_commutativity_1_0_0(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: in_commutativity_1_0_0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, w2
+; CHECK-NEXT: eor w0, w8, w0
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+define i32 @in_commutativity_1_0_1(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: in_commutativity_1_0_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w2, w8
+; CHECK-NEXT: eor w0, w8, w0
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0 ; swapped
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+define i32 @in_commutativity_1_1_0(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: in_commutativity_1_1_0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, w2
+; CHECK-NEXT: eor w0, w0, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+define i32 @in_commutativity_1_1_1(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: in_commutativity_1_1_1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w2, w8
+; CHECK-NEXT: eor w0, w0, w8
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0 ; swapped
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+define i32 @in_complex_y0(i32 %x, i32 %y_hi, i32 %y_low, i32 %mask) {
+; CHECK-LABEL: in_complex_y0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, w3
+; CHECK-NEXT: eor w0, w9, w8
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_complex_y1(i32 %x, i32 %y_hi, i32 %y_low, i32 %mask) {
+; CHECK-LABEL: in_complex_y1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w0, w8
+; CHECK-NEXT: and w9, w9, w3
+; CHECK-NEXT: eor w0, w8, w9
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+; ============================================================================ ;
+; M is an 'xor' too.
+; ============================================================================ ;
+define i32 @in_complex_m0(i32 %x, i32 %y, i32 %m_a, i32 %m_b) {
+; CHECK-LABEL: in_complex_m0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w2, w3
+; CHECK-NEXT: eor w9, w0, w1
+; CHECK-NEXT: and w8, w9, w8
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_complex_m1(i32 %x, i32 %y, i32 %m_a, i32 %m_b) {
+; CHECK-LABEL: in_complex_m1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w2, w3
+; CHECK-NEXT: eor w9, w0, w1
+; CHECK-NEXT: and w8, w8, w9
+; CHECK-NEXT: eor w0, w8, w1
+; CHECK-NEXT: ret
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+; ============================================================================ ;
+; Both Y and M are complex.
+; ============================================================================ ;
+define i32 @in_complex_y0_m0(i32 %x, i32 %y_hi, i32 %y_low, i32 %m_a, i32 %m_b) {
+; CHECK-LABEL: in_complex_y0_m0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w3, w4
+; CHECK-NEXT: eor w10, w0, w8
+; CHECK-NEXT: and w9, w10, w9
+; CHECK-NEXT: eor w0, w9, w8
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_complex_y1_m0(i32 %x, i32 %y_hi, i32 %y_low, i32 %m_a, i32 %m_b) {
+; CHECK-LABEL: in_complex_y1_m0:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w3, w4
+; CHECK-NEXT: eor w10, w0, w8
+; CHECK-NEXT: and w9, w10, w9
+; CHECK-NEXT: eor w0, w8, w9
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+define i32 @in_complex_y0_m1(i32 %x, i32 %y_hi, i32 %y_low, i32 %m_a, i32 %m_b) {
+; CHECK-LABEL: in_complex_y0_m1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w3, w4
+; CHECK-NEXT: eor w10, w0, w8
+; CHECK-NEXT: and w9, w9, w10
+; CHECK-NEXT: eor w0, w9, w8
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_complex_y1_m1(i32 %x, i32 %y_hi, i32 %y_low, i32 %m_a, i32 %m_b) {
+; CHECK-LABEL: in_complex_y1_m1:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w1, w2
+; CHECK-NEXT: eor w9, w3, w4
+; CHECK-NEXT: eor w10, w0, w8
+; CHECK-NEXT: and w9, w9, w10
+; CHECK-NEXT: eor w0, w8, w9
+; CHECK-NEXT: ret
+ %y = and i32 %y_hi, %y_low
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+; Multi-use tests.
+declare void @use32(i32) nounwind
+define i32 @in_multiuse_A(i32 %x, i32 %y, i32 %z, i32 %mask) nounwind {
+; CHECK-LABEL: in_multiuse_A:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w20, w8, w3
+; CHECK-NEXT: mov w0, w20
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_multiuse_B(i32 %x, i32 %y, i32 %z, i32 %mask) nounwind {
+; CHECK-LABEL: in_multiuse_B:
+; CHECK: // %bb.0:
+; CHECK-NEXT: str x20, [sp, #-32]! // 8-byte Folded Spill
+; CHECK-NEXT: eor w0, w0, w1
+; CHECK-NEXT: stp x19, x30, [sp, #16] // 8-byte Folded Spill
+; CHECK-NEXT: mov w19, w1
+; CHECK-NEXT: and w20, w0, w3
+; CHECK-NEXT: bl use32
+; CHECK-NEXT: eor w0, w20, w19
+; CHECK-NEXT: ldp x19, x30, [sp, #16] // 8-byte Folded Reload
+; CHECK-NEXT: ldr x20, [sp], #32 // 8-byte Folded Reload
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+; Various bad variants
+define i32 @n0_badmask(i32 %x, i32 %y, i32 %mask, i32 %mask2) {
+; CHECK-LABEL: n0_badmask:
+; CHECK: // %bb.0:
+; CHECK-NEXT: and w8, w0, w2
+; CHECK-NEXT: bic w9, w1, w3
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, %mask
+ %notmask = xor i32 %mask2, -1 ; %mask2 instead of %mask
+ %my = and i32 %y, %notmask
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+define i32 @n0_badxor(i32 %x, i32 %y, i32 %mask) {
+; CHECK-LABEL: n0_badxor:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w9, w2, #0x1
+; CHECK-NEXT: and w8, w0, w2
+; CHECK-NEXT: and w9, w1, w9
+; CHECK-NEXT: orr w0, w8, w9
+; CHECK-NEXT: ret
+ %mx = and i32 %x, %mask
+ %notmask = xor i32 %mask, 1 ; instead of -1
+ %my = and i32 %y, %notmask
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+define i32 @n1_thirdvar(i32 %x, i32 %y, i32 %z, i32 %mask) {
+; CHECK-LABEL: n1_thirdvar:
+; CHECK: // %bb.0:
+; CHECK-NEXT: eor w8, w0, w1
+; CHECK-NEXT: and w8, w8, w3
+; CHECK-NEXT: eor w0, w8, w2
+; CHECK-NEXT: ret
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-innerouter.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-innerouter.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-innerouter.ll (added)
+++ llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-innerouter.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,458 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=-bmi < %s | FileCheck %s --check-prefix=CHECK-NOBMI
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi < %s | FileCheck %s --check-prefix=CHECK-BMI
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; X: [byte3] [byte0]
+; Y: [byte2][byte1]
+
+define i8 @out8_constmask(i8 %x, i8 %y) {
+; CHECK-NOBMI-LABEL: out8_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andb $60, %dil
+; CHECK-NOBMI-NEXT: andb $-61, %sil
+; CHECK-NOBMI-NEXT: orb %dil, %sil
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out8_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andb $60, %dil
+; CHECK-BMI-NEXT: andb $-61, %sil
+; CHECK-BMI-NEXT: orb %dil, %sil
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i8 %x, 60
+ %my = and i8 %y, -61
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16_constmask(i16 %x, i16 %y) {
+; CHECK-NOBMI-LABEL: out16_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-NOBMI-NEXT: andl $4080, %edi # imm = 0xFF0
+; CHECK-NOBMI-NEXT: andl $-4081, %esi # imm = 0xF00F
+; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-NOBMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out16_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-BMI-NEXT: andl $4080, %edi # imm = 0xFF0
+; CHECK-BMI-NEXT: andl $-4081, %esi # imm = 0xF00F
+; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-BMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i16 %x, 4080
+ %my = and i16 %y, -4081
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32_constmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: out32_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: andl $-16776961, %esi # imm = 0xFF0000FF
+; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out32_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: andl $-16776961, %esi # imm = 0xFF0000FF
+; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, 16776960
+ %my = and i32 %y, -16776961
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64_constmask(i64 %x, i64 %y) {
+; CHECK-NOBMI-LABEL: out64_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: movabsq $281474976645120, %rcx # imm = 0xFFFFFFFF0000
+; CHECK-NOBMI-NEXT: andq %rdi, %rcx
+; CHECK-NOBMI-NEXT: movabsq $-281474976645121, %rax # imm = 0xFFFF00000000FFFF
+; CHECK-NOBMI-NEXT: andq %rsi, %rax
+; CHECK-NOBMI-NEXT: orq %rcx, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out64_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: movabsq $281474976645120, %rcx # imm = 0xFFFFFFFF0000
+; CHECK-BMI-NEXT: andq %rdi, %rcx
+; CHECK-BMI-NEXT: movabsq $-281474976645121, %rax # imm = 0xFFFF00000000FFFF
+; CHECK-BMI-NEXT: andq %rsi, %rax
+; CHECK-BMI-NEXT: orq %rcx, %rax
+; CHECK-BMI-NEXT: retq
+ %mx = and i64 %x, 281474976645120
+ %my = and i64 %y, -281474976645121
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8_constmask(i8 %x, i8 %y) {
+; CHECK-NOBMI-LABEL: in8_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andb $60, %dil
+; CHECK-NOBMI-NEXT: xorb %dil, %sil
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in8_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andb $60, %dil
+; CHECK-BMI-NEXT: xorb %dil, %sil
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, 60
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16_constmask(i16 %x, i16 %y) {
+; CHECK-NOBMI-LABEL: in16_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $4080, %edi # imm = 0xFF0
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in16_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $4080, %edi # imm = 0xFF0
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, 4080
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32_constmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in32_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in32_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64_constmask(i64 %x, i64 %y) {
+; CHECK-NOBMI-LABEL: in64_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorq %rsi, %rdi
+; CHECK-NOBMI-NEXT: movabsq $281474976645120, %rax # imm = 0xFFFFFFFF0000
+; CHECK-NOBMI-NEXT: andq %rdi, %rax
+; CHECK-NOBMI-NEXT: xorq %rsi, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in64_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorq %rsi, %rdi
+; CHECK-BMI-NEXT: movabsq $281474976645120, %rax # imm = 0xFFFFFFFF0000
+; CHECK-BMI-NEXT: andq %rdi, %rax
+; CHECK-BMI-NEXT: xorq %rsi, %rax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, 281474976645120
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+
+; ============================================================================ ;
+; Constant Commutativity tests.
+; ============================================================================ ;
+
+define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_0_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_0_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl $16776960, %esi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_1_0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl $16776960, %esi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl $16776960, %esi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_1_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl $16776960, %esi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+
+define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-NOBMI-LABEL: in_complex_y0_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y0_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-NOBMI-LABEL: in_complex_y1_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y1_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+
+; Multi-use tests.
+
+declare void @use32(i32) nounwind
+
+define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_A_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: movl %edi, %ebp
+; CHECK-NOBMI-NEXT: xorl %esi, %ebp
+; CHECK-NOBMI-NEXT: andl $16776960, %ebp # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: movl %ebp, %edi
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_A_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: movl %edi, %ebp
+; CHECK-BMI-NEXT: xorl %esi, %ebp
+; CHECK-BMI-NEXT: andl $16776960, %ebp # imm = 0xFFFF00
+; CHECK-BMI-NEXT: movl %ebp, %edi
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_B_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %ebp
+; CHECK-NOBMI-NEXT: andl $16776960, %ebp # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_B_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %ebp
+; CHECK-BMI-NEXT: andl $16776960, %ebp # imm = 0xFFFF00
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+; Various bad variants
+
+define i32 @n0_badconstmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: n0_badconstmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: andl $-16776960, %esi # imm = 0xFF000100
+; CHECK-NOBMI-NEXT: orl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n0_badconstmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: andl $-16776960, %esi # imm = 0xFF000100
+; CHECK-BMI-NEXT: orl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, 16776960
+ %my = and i32 %y, -16776960 ; instead of -16776961
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
+; CHECK-NOBMI-LABEL: n1_thirdvar_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-NOBMI-NEXT: xorl %edx, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n1_thirdvar_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
+; CHECK-BMI-NEXT: xorl %edx, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 16776960
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbits.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbits.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbits.ll (added)
+++ llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbits.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,458 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=-bmi < %s | FileCheck %s --check-prefix=CHECK-NOBMI
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi < %s | FileCheck %s --check-prefix=CHECK-BMI
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; X: [bit2] [bit0]
+; Y: [bit3] [bit1]
+
+define i8 @out8_constmask(i8 %x, i8 %y) {
+; CHECK-NOBMI-LABEL: out8_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andb $85, %dil
+; CHECK-NOBMI-NEXT: andb $-86, %sil
+; CHECK-NOBMI-NEXT: orb %dil, %sil
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out8_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andb $85, %dil
+; CHECK-BMI-NEXT: andb $-86, %sil
+; CHECK-BMI-NEXT: orb %dil, %sil
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i8 %x, 85
+ %my = and i8 %y, -86
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16_constmask(i16 %x, i16 %y) {
+; CHECK-NOBMI-LABEL: out16_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-NOBMI-NEXT: andl $21845, %edi # imm = 0x5555
+; CHECK-NOBMI-NEXT: andl $-21846, %esi # imm = 0xAAAA
+; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-NOBMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out16_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-BMI-NEXT: andl $21845, %edi # imm = 0x5555
+; CHECK-BMI-NEXT: andl $-21846, %esi # imm = 0xAAAA
+; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-BMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i16 %x, 21845
+ %my = and i16 %y, -21846
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32_constmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: out32_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-NOBMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: andl $-1431655766, %esi # imm = 0xAAAAAAAA
+; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out32_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-BMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-BMI-NEXT: andl $-1431655766, %esi # imm = 0xAAAAAAAA
+; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, 1431655765
+ %my = and i32 %y, -1431655766
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64_constmask(i64 %x, i64 %y) {
+; CHECK-NOBMI-LABEL: out64_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: movabsq $6148914691236517205, %rcx # imm = 0x5555555555555555
+; CHECK-NOBMI-NEXT: andq %rdi, %rcx
+; CHECK-NOBMI-NEXT: movabsq $-6148914691236517206, %rax # imm = 0xAAAAAAAAAAAAAAAA
+; CHECK-NOBMI-NEXT: andq %rsi, %rax
+; CHECK-NOBMI-NEXT: orq %rcx, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out64_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: movabsq $6148914691236517205, %rcx # imm = 0x5555555555555555
+; CHECK-BMI-NEXT: andq %rdi, %rcx
+; CHECK-BMI-NEXT: movabsq $-6148914691236517206, %rax # imm = 0xAAAAAAAAAAAAAAAA
+; CHECK-BMI-NEXT: andq %rsi, %rax
+; CHECK-BMI-NEXT: orq %rcx, %rax
+; CHECK-BMI-NEXT: retq
+ %mx = and i64 %x, 6148914691236517205
+ %my = and i64 %y, -6148914691236517206
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8_constmask(i8 %x, i8 %y) {
+; CHECK-NOBMI-LABEL: in8_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andb $85, %dil
+; CHECK-NOBMI-NEXT: xorb %dil, %sil
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in8_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andb $85, %dil
+; CHECK-BMI-NEXT: xorb %dil, %sil
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, 85
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16_constmask(i16 %x, i16 %y) {
+; CHECK-NOBMI-LABEL: in16_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $21845, %edi # imm = 0x5555
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in16_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $21845, %edi # imm = 0x5555
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, 21845
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32_constmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in32_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in32_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64_constmask(i64 %x, i64 %y) {
+; CHECK-NOBMI-LABEL: in64_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorq %rsi, %rdi
+; CHECK-NOBMI-NEXT: movabsq $6148914691236517205, %rax # imm = 0x5555555555555555
+; CHECK-NOBMI-NEXT: andq %rdi, %rax
+; CHECK-NOBMI-NEXT: xorq %rsi, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in64_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorq %rsi, %rdi
+; CHECK-BMI-NEXT: movabsq $6148914691236517205, %rax # imm = 0x5555555555555555
+; CHECK-BMI-NEXT: andq %rdi, %rax
+; CHECK-BMI-NEXT: xorq %rsi, %rax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, 6148914691236517205
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+
+; ============================================================================ ;
+; Constant Commutativity tests.
+; ============================================================================ ;
+
+define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_0_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_0_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl $1431655765, %esi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_1_0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl $1431655765, %esi # imm = 0x55555555
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl $1431655765, %esi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_1_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl $1431655765, %esi # imm = 0x55555555
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+
+define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-NOBMI-LABEL: in_complex_y0_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y0_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-NOBMI-LABEL: in_complex_y1_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y1_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+
+; Multi-use tests.
+
+declare void @use32(i32) nounwind
+
+define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_A_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: movl %edi, %ebp
+; CHECK-NOBMI-NEXT: xorl %esi, %ebp
+; CHECK-NOBMI-NEXT: andl $1431655765, %ebp # imm = 0x55555555
+; CHECK-NOBMI-NEXT: movl %ebp, %edi
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_A_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: movl %edi, %ebp
+; CHECK-BMI-NEXT: xorl %esi, %ebp
+; CHECK-BMI-NEXT: andl $1431655765, %ebp # imm = 0x55555555
+; CHECK-BMI-NEXT: movl %ebp, %edi
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_B_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %ebp
+; CHECK-NOBMI-NEXT: andl $1431655765, %ebp # imm = 0x55555555
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_B_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %ebp
+; CHECK-BMI-NEXT: andl $1431655765, %ebp # imm = 0x55555555
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+; Various bad variants
+
+define i32 @n0_badconstmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: n0_badconstmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: andl $-1431655765, %esi # imm = 0xAAAAAAAB
+; CHECK-NOBMI-NEXT: orl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n0_badconstmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-BMI-NEXT: andl $-1431655765, %esi # imm = 0xAAAAAAAB
+; CHECK-BMI-NEXT: orl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, 1431655765
+ %my = and i32 %y, -1431655765 ; instead of -1431655766
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
+; CHECK-NOBMI-LABEL: n1_thirdvar_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-NOBMI-NEXT: xorl %edx, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n1_thirdvar_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $1431655765, %edi # imm = 0x55555555
+; CHECK-BMI-NEXT: xorl %edx, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 1431655765
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll (added)
+++ llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-interleavedbytehalves.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,458 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=-bmi < %s | FileCheck %s --check-prefix=CHECK-NOBMI
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi < %s | FileCheck %s --check-prefix=CHECK-BMI
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; X: [bit 3210]
+; Y: [bit 7654]
+
+define i8 @out8_constmask(i8 %x, i8 %y) {
+; CHECK-NOBMI-LABEL: out8_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andb $15, %dil
+; CHECK-NOBMI-NEXT: andb $-16, %sil
+; CHECK-NOBMI-NEXT: orb %dil, %sil
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out8_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andb $15, %dil
+; CHECK-BMI-NEXT: andb $-16, %sil
+; CHECK-BMI-NEXT: orb %dil, %sil
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i8 %x, 15
+ %my = and i8 %y, -16
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16_constmask(i16 %x, i16 %y) {
+; CHECK-NOBMI-LABEL: out16_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-NOBMI-NEXT: andl $3855, %edi # imm = 0xF0F
+; CHECK-NOBMI-NEXT: andl $-3856, %esi # imm = 0xF0F0
+; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-NOBMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out16_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-BMI-NEXT: andl $3855, %edi # imm = 0xF0F
+; CHECK-BMI-NEXT: andl $-3856, %esi # imm = 0xF0F0
+; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-BMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i16 %x, 3855
+ %my = and i16 %y, -3856
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32_constmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: out32_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-NOBMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: andl $-252645136, %esi # imm = 0xF0F0F0F0
+; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out32_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
+; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
+; CHECK-BMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: andl $-252645136, %esi # imm = 0xF0F0F0F0
+; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, 252645135
+ %my = and i32 %y, -252645136
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64_constmask(i64 %x, i64 %y) {
+; CHECK-NOBMI-LABEL: out64_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: movabsq $1085102592571150095, %rcx # imm = 0xF0F0F0F0F0F0F0F
+; CHECK-NOBMI-NEXT: andq %rdi, %rcx
+; CHECK-NOBMI-NEXT: movabsq $-1085102592571150096, %rax # imm = 0xF0F0F0F0F0F0F0F0
+; CHECK-NOBMI-NEXT: andq %rsi, %rax
+; CHECK-NOBMI-NEXT: orq %rcx, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out64_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: movabsq $1085102592571150095, %rcx # imm = 0xF0F0F0F0F0F0F0F
+; CHECK-BMI-NEXT: andq %rdi, %rcx
+; CHECK-BMI-NEXT: movabsq $-1085102592571150096, %rax # imm = 0xF0F0F0F0F0F0F0F0
+; CHECK-BMI-NEXT: andq %rsi, %rax
+; CHECK-BMI-NEXT: orq %rcx, %rax
+; CHECK-BMI-NEXT: retq
+ %mx = and i64 %x, 1085102592571150095
+ %my = and i64 %y, -1085102592571150096
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8_constmask(i8 %x, i8 %y) {
+; CHECK-NOBMI-LABEL: in8_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andb $15, %dil
+; CHECK-NOBMI-NEXT: xorb %dil, %sil
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in8_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andb $15, %dil
+; CHECK-BMI-NEXT: xorb %dil, %sil
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, 15
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16_constmask(i16 %x, i16 %y) {
+; CHECK-NOBMI-LABEL: in16_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $3855, %edi # imm = 0xF0F
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in16_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $3855, %edi # imm = 0xF0F
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, 3855
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32_constmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in32_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in32_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64_constmask(i64 %x, i64 %y) {
+; CHECK-NOBMI-LABEL: in64_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorq %rsi, %rdi
+; CHECK-NOBMI-NEXT: movabsq $1085102592571150095, %rax # imm = 0xF0F0F0F0F0F0F0F
+; CHECK-NOBMI-NEXT: andq %rdi, %rax
+; CHECK-NOBMI-NEXT: xorq %rsi, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in64_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorq %rsi, %rdi
+; CHECK-BMI-NEXT: movabsq $1085102592571150095, %rax # imm = 0xF0F0F0F0F0F0F0F
+; CHECK-BMI-NEXT: andq %rdi, %rax
+; CHECK-BMI-NEXT: xorq %rsi, %rax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, 1085102592571150095
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+
+; ============================================================================ ;
+; Constant Commutativity tests.
+; ============================================================================ ;
+
+define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_0_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_0_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl $252645135, %esi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_1_0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl $252645135, %esi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl $252645135, %esi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_1_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl $252645135, %esi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+
+define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-NOBMI-LABEL: in_complex_y0_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y0_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-NOBMI-LABEL: in_complex_y1_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y1_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+
+; Multi-use tests.
+
+declare void @use32(i32) nounwind
+
+define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_A_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: movl %edi, %ebp
+; CHECK-NOBMI-NEXT: xorl %esi, %ebp
+; CHECK-NOBMI-NEXT: andl $252645135, %ebp # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: movl %ebp, %edi
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_A_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: movl %edi, %ebp
+; CHECK-BMI-NEXT: xorl %esi, %ebp
+; CHECK-BMI-NEXT: andl $252645135, %ebp # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: movl %ebp, %edi
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_B_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %ebp
+; CHECK-NOBMI-NEXT: andl $252645135, %ebp # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_B_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %ebp
+; CHECK-BMI-NEXT: andl $252645135, %ebp # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+; Various bad variants
+
+define i32 @n0_badconstmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: n0_badconstmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: andl $-252645135, %esi # imm = 0xF0F0F0F1
+; CHECK-NOBMI-NEXT: orl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n0_badconstmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: andl $-252645135, %esi # imm = 0xF0F0F0F1
+; CHECK-BMI-NEXT: orl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, 252645135
+ %my = and i32 %y, -252645135 ; instead of -252645136
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
+; CHECK-NOBMI-LABEL: n1_thirdvar_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-NOBMI-NEXT: xorl %edx, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n1_thirdvar_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl $252645135, %edi # imm = 0xF0F0F0F
+; CHECK-BMI-NEXT: xorl %edx, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 252645135
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-lowhigh.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-lowhigh.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-lowhigh.ll (added)
+++ llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-constmask-lowhigh.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,426 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=-bmi < %s | FileCheck %s --check-prefix=CHECK-NOBMI
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi < %s | FileCheck %s --check-prefix=CHECK-BMI
+
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+; X: [byte1][byte0]
+; Y: [byte3][byte2]
+
+define i8 @out8_constmask(i8 %x, i8 %y) {
+; CHECK-NOBMI-LABEL: out8_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andb $15, %dil
+; CHECK-NOBMI-NEXT: andb $-16, %sil
+; CHECK-NOBMI-NEXT: orb %dil, %sil
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out8_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andb $15, %dil
+; CHECK-BMI-NEXT: andb $-16, %sil
+; CHECK-BMI-NEXT: orb %dil, %sil
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i8 %x, 15
+ %my = and i8 %y, -16
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16_constmask(i16 %x, i16 %y) {
+; CHECK-NOBMI-LABEL: out16_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: movzbl %dil, %eax
+; CHECK-NOBMI-NEXT: andl $-256, %esi
+; CHECK-NOBMI-NEXT: orl %esi, %eax
+; CHECK-NOBMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out16_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: movzbl %dil, %eax
+; CHECK-BMI-NEXT: andl $-256, %esi
+; CHECK-BMI-NEXT: orl %esi, %eax
+; CHECK-BMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i16 %x, 255
+ %my = and i16 %y, -256
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32_constmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: out32_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: movzwl %di, %eax
+; CHECK-NOBMI-NEXT: andl $-65536, %esi # imm = 0xFFFF0000
+; CHECK-NOBMI-NEXT: orl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out32_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: movzwl %di, %eax
+; CHECK-BMI-NEXT: andl $-65536, %esi # imm = 0xFFFF0000
+; CHECK-BMI-NEXT: orl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, 65535
+ %my = and i32 %y, -65536
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64_constmask(i64 %x, i64 %y) {
+; CHECK-NOBMI-LABEL: out64_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: movl %edi, %ecx
+; CHECK-NOBMI-NEXT: movabsq $-4294967296, %rax # imm = 0xFFFFFFFF00000000
+; CHECK-NOBMI-NEXT: andq %rsi, %rax
+; CHECK-NOBMI-NEXT: orq %rcx, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out64_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: movl %edi, %ecx
+; CHECK-BMI-NEXT: movabsq $-4294967296, %rax # imm = 0xFFFFFFFF00000000
+; CHECK-BMI-NEXT: andq %rsi, %rax
+; CHECK-BMI-NEXT: orq %rcx, %rax
+; CHECK-BMI-NEXT: retq
+ %mx = and i64 %x, 4294967295
+ %my = and i64 %y, -4294967296
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8_constmask(i8 %x, i8 %y) {
+; CHECK-NOBMI-LABEL: in8_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andb $15, %dil
+; CHECK-NOBMI-NEXT: xorb %dil, %sil
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in8_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andb $15, %dil
+; CHECK-BMI-NEXT: xorb %dil, %sil
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, 15
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16_constmask(i16 %x, i16 %y) {
+; CHECK-NOBMI-LABEL: in16_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movzbl %dil, %eax
+; CHECK-NOBMI-NEXT: xorl %esi, %eax
+; CHECK-NOBMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in16_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movzbl %dil, %eax
+; CHECK-BMI-NEXT: xorl %esi, %eax
+; CHECK-BMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, 255
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32_constmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in32_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movzwl %di, %eax
+; CHECK-NOBMI-NEXT: xorl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in32_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movzwl %di, %eax
+; CHECK-BMI-NEXT: xorl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64_constmask(i64 %x, i64 %y) {
+; CHECK-NOBMI-LABEL: in64_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: xorl %edi, %eax
+; CHECK-NOBMI-NEXT: xorq %rsi, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in64_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: xorl %edi, %eax
+; CHECK-BMI-NEXT: xorq %rsi, %rax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, 4294967295
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+
+; ============================================================================ ;
+; Constant Commutativity tests.
+; ============================================================================ ;
+
+define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_0_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movzwl %di, %eax
+; CHECK-NOBMI-NEXT: xorl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_0_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movzwl %di, %eax
+; CHECK-BMI-NEXT: xorl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movzwl %si, %eax
+; CHECK-NOBMI-NEXT: xorl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_1_0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movzwl %si, %eax
+; CHECK-BMI-NEXT: xorl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+
+define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movzwl %si, %eax
+; CHECK-NOBMI-NEXT: xorl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_constmask_commutativity_1_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movzwl %si, %eax
+; CHECK-BMI-NEXT: xorl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+
+define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-NOBMI-LABEL: in_complex_y0_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movzwl %di, %eax
+; CHECK-NOBMI-NEXT: xorl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y0_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movzwl %di, %eax
+; CHECK-BMI-NEXT: xorl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
+; CHECK-NOBMI-LABEL: in_complex_y1_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movzwl %di, %eax
+; CHECK-NOBMI-NEXT: xorl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y1_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movzwl %di, %eax
+; CHECK-BMI-NEXT: xorl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+
+; Multi-use tests.
+
+declare void @use32(i32) nounwind
+
+define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_A_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movzwl %di, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %edi
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_A_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movzwl %di, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %edi
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_B_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movzwl %di, %ebp
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_B_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movzwl %di, %ebp
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+; Various bad variants
+
+define i32 @n0_badconstmask(i32 %x, i32 %y) {
+; CHECK-NOBMI-LABEL: n0_badconstmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: movzwl %di, %eax
+; CHECK-NOBMI-NEXT: andl $-65535, %esi # imm = 0xFFFF0001
+; CHECK-NOBMI-NEXT: orl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n0_badconstmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: movzwl %di, %eax
+; CHECK-BMI-NEXT: andl $-65535, %esi # imm = 0xFFFF0001
+; CHECK-BMI-NEXT: orl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, 65535
+ %my = and i32 %y, -65535 ; instead of -65536
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
+; CHECK-NOBMI-LABEL: n1_thirdvar_constmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movzwl %di, %eax
+; CHECK-NOBMI-NEXT: xorl %edx, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n1_thirdvar_constmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movzwl %di, %eax
+; CHECK-BMI-NEXT: xorl %edx, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, 65535
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
Added: llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-variablemask.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-variablemask.ll?rev=330645&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-variablemask.ll (added)
+++ llvm/trunk/test/CodeGen/X86/unfold-masked-merge-scalar-variablemask.ll Mon Apr 23 13:38:42 2018
@@ -0,0 +1,708 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=-bmi < %s | FileCheck %s --check-prefix=CHECK-NOBMI
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi < %s | FileCheck %s --check-prefix=CHECK-BMI
+; https://bugs.llvm.org/show_bug.cgi?id=37104
+
+define i8 @out8(i8 %x, i8 %y, i8 %mask) {
+; CHECK-NOBMI-LABEL: out8:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: notb %dl
+; CHECK-NOBMI-NEXT: andb %sil, %dl
+; CHECK-NOBMI-NEXT: orb %dil, %dl
+; CHECK-NOBMI-NEXT: movl %edx, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out8:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: notb %dl
+; CHECK-BMI-NEXT: andb %sil, %dl
+; CHECK-BMI-NEXT: orb %dil, %dl
+; CHECK-BMI-NEXT: movl %edx, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i8 %x, %mask
+ %notmask = xor i8 %mask, -1
+ %my = and i8 %y, %notmask
+ %r = or i8 %mx, %my
+ ret i8 %r
+}
+
+define i16 @out16(i16 %x, i16 %y, i16 %mask) {
+; CHECK-NOBMI-LABEL: out16:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: notl %edx
+; CHECK-NOBMI-NEXT: andl %esi, %edx
+; CHECK-NOBMI-NEXT: orl %edi, %edx
+; CHECK-NOBMI-NEXT: movl %edx, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out16:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: andnl %esi, %edx, %eax
+; CHECK-BMI-NEXT: orl %edi, %eax
+; CHECK-BMI-NEXT: # kill: def $ax killed $ax killed $eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i16 %x, %mask
+ %notmask = xor i16 %mask, -1
+ %my = and i16 %y, %notmask
+ %r = or i16 %mx, %my
+ ret i16 %r
+}
+
+define i32 @out32(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: out32:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: notl %edx
+; CHECK-NOBMI-NEXT: andl %esi, %edx
+; CHECK-NOBMI-NEXT: orl %edi, %edx
+; CHECK-NOBMI-NEXT: movl %edx, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out32:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: andnl %esi, %edx, %eax
+; CHECK-BMI-NEXT: orl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, %mask
+ %notmask = xor i32 %mask, -1
+ %my = and i32 %y, %notmask
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+
+define i64 @out64(i64 %x, i64 %y, i64 %mask) {
+; CHECK-NOBMI-LABEL: out64:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andq %rdx, %rdi
+; CHECK-NOBMI-NEXT: notq %rdx
+; CHECK-NOBMI-NEXT: andq %rsi, %rdx
+; CHECK-NOBMI-NEXT: orq %rdi, %rdx
+; CHECK-NOBMI-NEXT: movq %rdx, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: out64:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andq %rdx, %rdi
+; CHECK-BMI-NEXT: andnq %rsi, %rdx, %rax
+; CHECK-BMI-NEXT: orq %rdi, %rax
+; CHECK-BMI-NEXT: retq
+ %mx = and i64 %x, %mask
+ %notmask = xor i64 %mask, -1
+ %my = and i64 %y, %notmask
+ %r = or i64 %mx, %my
+ ret i64 %r
+}
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+; Should be the same as the previous one.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+define i8 @in8(i8 %x, i8 %y, i8 %mask) {
+; CHECK-NOBMI-LABEL: in8:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in8:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i8 %x, %y
+ %n1 = and i8 %n0, %mask
+ %r = xor i8 %n1, %y
+ ret i8 %r
+}
+
+define i16 @in16(i16 %x, i16 %y, i16 %mask) {
+; CHECK-NOBMI-LABEL: in16:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in16:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i16 %x, %y
+ %n1 = and i16 %n0, %mask
+ %r = xor i16 %n1, %y
+ ret i16 %r
+}
+
+define i32 @in32(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: in32:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in32:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+
+define i64 @in64(i64 %x, i64 %y, i64 %mask) {
+; CHECK-NOBMI-LABEL: in64:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorq %rsi, %rdi
+; CHECK-NOBMI-NEXT: andq %rdx, %rdi
+; CHECK-NOBMI-NEXT: xorq %rsi, %rdi
+; CHECK-NOBMI-NEXT: movq %rdi, %rax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in64:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorq %rsi, %rdi
+; CHECK-BMI-NEXT: andq %rdx, %rdi
+; CHECK-BMI-NEXT: xorq %rsi, %rdi
+; CHECK-BMI-NEXT: movq %rdi, %rax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i64 %x, %y
+ %n1 = and i64 %n0, %mask
+ %r = xor i64 %n1, %y
+ ret i64 %r
+}
+; ============================================================================ ;
+; Commutativity tests.
+; ============================================================================ ;
+define i32 @in_commutativity_0_0_1(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_commutativity_0_0_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_commutativity_0_0_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0 ; swapped
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_commutativity_0_1_0(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_commutativity_0_1_0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_commutativity_0_1_0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+define i32 @in_commutativity_0_1_1(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_commutativity_0_1_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_commutativity_0_1_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0 ; swapped
+ %r = xor i32 %y, %n1 ; swapped
+ ret i32 %r
+}
+define i32 @in_commutativity_1_0_0(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_commutativity_1_0_0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_commutativity_1_0_0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+define i32 @in_commutativity_1_0_1(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_commutativity_1_0_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_commutativity_1_0_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0 ; swapped
+ %r = xor i32 %n1, %x ; %x instead of %y
+ ret i32 %r
+}
+define i32 @in_commutativity_1_1_0(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_commutativity_1_1_0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_commutativity_1_1_0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+define i32 @in_commutativity_1_1_1(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_commutativity_1_1_1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %edi, %esi
+; CHECK-NOBMI-NEXT: movl %esi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_commutativity_1_1_1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %edi, %esi
+; CHECK-BMI-NEXT: movl %esi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0 ; swapped
+ %r = xor i32 %x, %n1 ; swapped, %x instead of %y
+ ret i32 %r
+}
+; ============================================================================ ;
+; Y is an 'and' too.
+; ============================================================================ ;
+define i32 @in_complex_y0(i32 %x, i32 %y_hi, i32 %y_low, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_complex_y0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %ecx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %ecx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_complex_y1(i32 %x, i32 %y_hi, i32 %y_low, i32 %mask) {
+; CHECK-NOBMI-LABEL: in_complex_y1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %ecx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %ecx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+; ============================================================================ ;
+; M is an 'xor' too.
+; ============================================================================ ;
+define i32 @in_complex_m0(i32 %x, i32 %y, i32 %m_a, i32 %m_b) {
+; CHECK-NOBMI-LABEL: in_complex_m0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %ecx, %edx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_m0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %ecx, %edx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_complex_m1(i32 %x, i32 %y, i32 %m_a, i32 %m_b) {
+; CHECK-NOBMI-LABEL: in_complex_m1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %ecx, %edx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_m1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %ecx, %edx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+; ============================================================================ ;
+; Both Y and M are complex.
+; ============================================================================ ;
+define i32 @in_complex_y0_m0(i32 %x, i32 %y_hi, i32 %y_low, i32 %m_a, i32 %m_b) {
+; CHECK-NOBMI-LABEL: in_complex_y0_m0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %r8d, %ecx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %ecx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y0_m0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %r8d, %ecx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %ecx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_complex_y1_m0(i32 %x, i32 %y_hi, i32 %y_low, i32 %m_a, i32 %m_b) {
+; CHECK-NOBMI-LABEL: in_complex_y1_m0:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %r8d, %ecx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %ecx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y1_m0:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %r8d, %ecx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %ecx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+define i32 @in_complex_y0_m1(i32 %x, i32 %y_hi, i32 %y_low, i32 %m_a, i32 %m_b) {
+; CHECK-NOBMI-LABEL: in_complex_y0_m1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %r8d, %ecx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %ecx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y0_m1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %r8d, %ecx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %ecx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_complex_y1_m1(i32 %x, i32 %y_hi, i32 %y_low, i32 %m_a, i32 %m_b) {
+; CHECK-NOBMI-LABEL: in_complex_y1_m1:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %esi
+; CHECK-NOBMI-NEXT: xorl %r8d, %ecx
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %ecx, %edi
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_complex_y1_m1:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %esi
+; CHECK-BMI-NEXT: xorl %r8d, %ecx
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %ecx, %edi
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %y = and i32 %y_hi, %y_low
+ %mask = xor i32 %m_a, %m_b
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %mask, %n0
+ %r = xor i32 %y, %n1
+ ret i32 %r
+}
+; ============================================================================ ;
+; Negative tests. Should not be folded.
+; ============================================================================ ;
+; Multi-use tests.
+declare void @use32(i32) nounwind
+define i32 @in_multiuse_A(i32 %x, i32 %y, i32 %z, i32 %mask) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_A:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %esi, %ebx
+; CHECK-NOBMI-NEXT: movl %edi, %ebp
+; CHECK-NOBMI-NEXT: xorl %esi, %ebp
+; CHECK-NOBMI-NEXT: andl %ecx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %edi
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
+; CHECK-NOBMI-NEXT: movl %ebp, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_A:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %esi, %ebx
+; CHECK-BMI-NEXT: movl %edi, %ebp
+; CHECK-BMI-NEXT: xorl %esi, %ebp
+; CHECK-BMI-NEXT: andl %ecx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %edi
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebx, %ebp
+; CHECK-BMI-NEXT: movl %ebp, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ call void @use32(i32 %n1)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+define i32 @in_multiuse_B(i32 %x, i32 %y, i32 %z, i32 %mask) nounwind {
+; CHECK-NOBMI-LABEL: in_multiuse_B:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: pushq %rbp
+; CHECK-NOBMI-NEXT: pushq %rbx
+; CHECK-NOBMI-NEXT: pushq %rax
+; CHECK-NOBMI-NEXT: movl %ecx, %ebx
+; CHECK-NOBMI-NEXT: movl %esi, %ebp
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %edi, %ebx
+; CHECK-NOBMI-NEXT: callq use32
+; CHECK-NOBMI-NEXT: xorl %ebp, %ebx
+; CHECK-NOBMI-NEXT: movl %ebx, %eax
+; CHECK-NOBMI-NEXT: addq $8, %rsp
+; CHECK-NOBMI-NEXT: popq %rbx
+; CHECK-NOBMI-NEXT: popq %rbp
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: in_multiuse_B:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: pushq %rbp
+; CHECK-BMI-NEXT: pushq %rbx
+; CHECK-BMI-NEXT: pushq %rax
+; CHECK-BMI-NEXT: movl %ecx, %ebx
+; CHECK-BMI-NEXT: movl %esi, %ebp
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %edi, %ebx
+; CHECK-BMI-NEXT: callq use32
+; CHECK-BMI-NEXT: xorl %ebp, %ebx
+; CHECK-BMI-NEXT: movl %ebx, %eax
+; CHECK-BMI-NEXT: addq $8, %rsp
+; CHECK-BMI-NEXT: popq %rbx
+; CHECK-BMI-NEXT: popq %rbp
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ call void @use32(i32 %n0)
+ %r = xor i32 %n1, %y
+ ret i32 %r
+}
+; Various bad variants
+define i32 @n0_badmask(i32 %x, i32 %y, i32 %mask, i32 %mask2) {
+; CHECK-NOBMI-LABEL: n0_badmask:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: notl %ecx
+; CHECK-NOBMI-NEXT: andl %esi, %ecx
+; CHECK-NOBMI-NEXT: orl %edi, %ecx
+; CHECK-NOBMI-NEXT: movl %ecx, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n0_badmask:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: andnl %esi, %ecx, %eax
+; CHECK-BMI-NEXT: orl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, %mask
+ %notmask = xor i32 %mask2, -1 ; %mask2 instead of %mask
+ %my = and i32 %y, %notmask
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+define i32 @n0_badxor(i32 %x, i32 %y, i32 %mask) {
+; CHECK-NOBMI-LABEL: n0_badxor:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: andl %edx, %edi
+; CHECK-NOBMI-NEXT: xorl $1, %edx
+; CHECK-NOBMI-NEXT: andl %esi, %edx
+; CHECK-NOBMI-NEXT: orl %edi, %edx
+; CHECK-NOBMI-NEXT: movl %edx, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n0_badxor:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: andl %edx, %edi
+; CHECK-BMI-NEXT: xorl $1, %edx
+; CHECK-BMI-NEXT: andl %esi, %edx
+; CHECK-BMI-NEXT: orl %edi, %edx
+; CHECK-BMI-NEXT: movl %edx, %eax
+; CHECK-BMI-NEXT: retq
+ %mx = and i32 %x, %mask
+ %notmask = xor i32 %mask, 1 ; instead of -1
+ %my = and i32 %y, %notmask
+ %r = or i32 %mx, %my
+ ret i32 %r
+}
+define i32 @n1_thirdvar(i32 %x, i32 %y, i32 %z, i32 %mask) {
+; CHECK-NOBMI-LABEL: n1_thirdvar:
+; CHECK-NOBMI: # %bb.0:
+; CHECK-NOBMI-NEXT: xorl %esi, %edi
+; CHECK-NOBMI-NEXT: andl %ecx, %edi
+; CHECK-NOBMI-NEXT: xorl %edx, %edi
+; CHECK-NOBMI-NEXT: movl %edi, %eax
+; CHECK-NOBMI-NEXT: retq
+;
+; CHECK-BMI-LABEL: n1_thirdvar:
+; CHECK-BMI: # %bb.0:
+; CHECK-BMI-NEXT: xorl %esi, %edi
+; CHECK-BMI-NEXT: andl %ecx, %edi
+; CHECK-BMI-NEXT: xorl %edx, %edi
+; CHECK-BMI-NEXT: movl %edi, %eax
+; CHECK-BMI-NEXT: retq
+ %n0 = xor i32 %x, %y
+ %n1 = and i32 %n0, %mask
+ %r = xor i32 %n1, %z ; instead of %y
+ ret i32 %r
+}
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