[llvm] r268862 - [X86] Added BITREVERSE constant folding and identity tests
Simon Pilgrim via llvm-commits
llvm-commits at lists.llvm.org
Sat May 7 12:04:00 PDT 2016
Author: rksimon
Date: Sat May 7 14:04:00 2016
New Revision: 268862
URL: http://llvm.org/viewvc/llvm-project?rev=268862&view=rev
Log:
[X86] Added BITREVERSE constant folding and identity tests
Identity tests are currently failing - this will be fixed soon
Modified:
llvm/trunk/test/CodeGen/X86/bitreverse.ll
Modified: llvm/trunk/test/CodeGen/X86/bitreverse.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/bitreverse.ll?rev=268862&r1=268861&r2=268862&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/bitreverse.ll (original)
+++ llvm/trunk/test/CodeGen/X86/bitreverse.ll Sat May 7 14:04:00 2016
@@ -1,4 +1,4 @@
-; RUN: llc -march=x86 %s -o - | FileCheck %s
+; RUN: llc < %s -mtriple=i686-unknown | FileCheck %s
; These tests just check that the plumbing is in place for @llvm.bitreverse. The
; actual output is massive at the moment as llvm.bitreverse is not yet legal.
@@ -20,3 +20,365 @@ define i8 @g(i8 %a) {
%b = call i8 @llvm.bitreverse.i8(i8 %a)
ret i8 %b
}
+
+; These tests check that bitreverse(constant) calls are folded
+
+define <2 x i16> @fold_v2i16() {
+; CHECK-LABEL: fold_v2i16:
+; CHECK: # BB#0:
+; CHECK-NEXT: movw $-4096, %ax # imm = 0xFFFFFFFFFFFFF000
+; CHECK-NEXT: movw $240, %dx
+; CHECK-NEXT: retl
+ %b = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> <i16 15, i16 3840>)
+ ret <2 x i16> %b
+}
+
+define i8 @fold_i8() {
+; CHECK-LABEL: fold_i8:
+; CHECK: # BB#0:
+; CHECK-NEXT: movb $-16, %al
+; CHECK-NEXT: retl
+ %b = call i8 @llvm.bitreverse.i8(i8 15)
+ ret i8 %b
+}
+
+; These tests check that bitreverse(bitreverse()) calls are removed
+
+define i8 @identity_i8(i8 %a) {
+; CHECK-LABEL: identity_i8:
+; CHECK: # BB#0:
+; CHECK-NEXT: movb {{[0-9]+}}(%esp), %al
+; CHECK-NEXT: movl %eax, %ecx
+; CHECK-NEXT: shlb $7, %cl
+; CHECK-NEXT: movl %eax, %edx
+; CHECK-NEXT: shlb $5, %dl
+; CHECK-NEXT: andb $64, %dl
+; CHECK-NEXT: movb %al, %ah
+; CHECK-NEXT: shlb $3, %ah
+; CHECK-NEXT: andb $32, %ah
+; CHECK-NEXT: orb %dl, %ah
+; CHECK-NEXT: movl %eax, %edx
+; CHECK-NEXT: addb %dl, %dl
+; CHECK-NEXT: andb $16, %dl
+; CHECK-NEXT: orb %ah, %dl
+; CHECK-NEXT: movb %al, %ah
+; CHECK-NEXT: shrb %ah
+; CHECK-NEXT: andb $8, %ah
+; CHECK-NEXT: orb %dl, %ah
+; CHECK-NEXT: movl %eax, %edx
+; CHECK-NEXT: shrb $3, %dl
+; CHECK-NEXT: andb $4, %dl
+; CHECK-NEXT: orb %ah, %dl
+; CHECK-NEXT: movb %al, %ah
+; CHECK-NEXT: shrb $5, %ah
+; CHECK-NEXT: andb $2, %ah
+; CHECK-NEXT: orb %dl, %ah
+; CHECK-NEXT: shrb $7, %al
+; CHECK-NEXT: orb %ah, %al
+; CHECK-NEXT: orb %cl, %al
+; CHECK-NEXT: movl %eax, %ecx
+; CHECK-NEXT: shlb $7, %cl
+; CHECK-NEXT: movl %eax, %edx
+; CHECK-NEXT: shlb $5, %dl
+; CHECK-NEXT: andb $64, %dl
+; CHECK-NEXT: movb %al, %ah
+; CHECK-NEXT: shlb $3, %ah
+; CHECK-NEXT: andb $32, %ah
+; CHECK-NEXT: orb %dl, %ah
+; CHECK-NEXT: movl %eax, %edx
+; CHECK-NEXT: addb %dl, %dl
+; CHECK-NEXT: andb $16, %dl
+; CHECK-NEXT: orb %ah, %dl
+; CHECK-NEXT: movb %al, %ah
+; CHECK-NEXT: shrb %ah
+; CHECK-NEXT: andb $8, %ah
+; CHECK-NEXT: orb %dl, %ah
+; CHECK-NEXT: movl %eax, %edx
+; CHECK-NEXT: shrb $3, %dl
+; CHECK-NEXT: andb $4, %dl
+; CHECK-NEXT: orb %ah, %dl
+; CHECK-NEXT: movb %al, %ah
+; CHECK-NEXT: shrb $5, %ah
+; CHECK-NEXT: andb $2, %ah
+; CHECK-NEXT: orb %dl, %ah
+; CHECK-NEXT: shrb $7, %al
+; CHECK-NEXT: orb %ah, %al
+; CHECK-NEXT: orb %cl, %al
+; CHECK-NEXT: retl
+ %b = call i8 @llvm.bitreverse.i8(i8 %a)
+ %c = call i8 @llvm.bitreverse.i8(i8 %b)
+ ret i8 %c
+}
+
+define <2 x i16> @identity_v2i16(<2 x i16> %a) {
+; CHECK-LABEL: identity_v2i16:
+; CHECK: # BB#0:
+; CHECK-NEXT: pushl %ebp
+; CHECK-NEXT: .Ltmp4:
+; CHECK-NEXT: .cfi_def_cfa_offset 8
+; CHECK-NEXT: pushl %ebx
+; CHECK-NEXT: .Ltmp5:
+; CHECK-NEXT: .cfi_def_cfa_offset 12
+; CHECK-NEXT: pushl %edi
+; CHECK-NEXT: .Ltmp6:
+; CHECK-NEXT: .cfi_def_cfa_offset 16
+; CHECK-NEXT: pushl %esi
+; CHECK-NEXT: .Ltmp7:
+; CHECK-NEXT: .cfi_def_cfa_offset 20
+; CHECK-NEXT: .Ltmp8:
+; CHECK-NEXT: .cfi_offset %esi, -20
+; CHECK-NEXT: .Ltmp9:
+; CHECK-NEXT: .cfi_offset %edi, -16
+; CHECK-NEXT: .Ltmp10:
+; CHECK-NEXT: .cfi_offset %ebx, -12
+; CHECK-NEXT: .Ltmp11:
+; CHECK-NEXT: .cfi_offset %ebp, -8
+; CHECK-NEXT: movzwl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT: movl %ecx, %eax
+; CHECK-NEXT: shll $15, %eax
+; CHECK-NEXT: movl %ecx, %edx
+; CHECK-NEXT: andl $2, %edx
+; CHECK-NEXT: shll $13, %edx
+; CHECK-NEXT: orl %eax, %edx
+; CHECK-NEXT: movl %ecx, %eax
+; CHECK-NEXT: andl $4, %eax
+; CHECK-NEXT: shll $11, %eax
+; CHECK-NEXT: orl %edx, %eax
+; CHECK-NEXT: movl %ecx, %edx
+; CHECK-NEXT: andl $8, %edx
+; CHECK-NEXT: shll $9, %edx
+; CHECK-NEXT: orl %eax, %edx
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: andl $16, %edi
+; CHECK-NEXT: shll $7, %edi
+; CHECK-NEXT: orl %edx, %edi
+; CHECK-NEXT: movl %ecx, %eax
+; CHECK-NEXT: andl $32, %eax
+; CHECK-NEXT: shll $5, %eax
+; CHECK-NEXT: orl %edi, %eax
+; CHECK-NEXT: movl %ecx, %edx
+; CHECK-NEXT: andl $64, %edx
+; CHECK-NEXT: shll $3, %edx
+; CHECK-NEXT: leal (%ecx,%ecx), %edi
+; CHECK-NEXT: andl $256, %edi # imm = 0x100
+; CHECK-NEXT: orl %edx, %edi
+; CHECK-NEXT: movl %ecx, %edx
+; CHECK-NEXT: shrl %edx
+; CHECK-NEXT: andl $128, %edx
+; CHECK-NEXT: orl %edi, %edx
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: shrl $3, %edi
+; CHECK-NEXT: andl $64, %edi
+; CHECK-NEXT: orl %edx, %edi
+; CHECK-NEXT: movl %ecx, %edx
+; CHECK-NEXT: shrl $5, %edx
+; CHECK-NEXT: andl $32, %edx
+; CHECK-NEXT: orl %edi, %edx
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: shrl $7, %edi
+; CHECK-NEXT: andl $16, %edi
+; CHECK-NEXT: orl %edx, %edi
+; CHECK-NEXT: movl %ecx, %edx
+; CHECK-NEXT: shrl $9, %edx
+; CHECK-NEXT: andl $8, %edx
+; CHECK-NEXT: orl %edi, %edx
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: shrl $11, %edi
+; CHECK-NEXT: andl $4, %edi
+; CHECK-NEXT: orl %edx, %edi
+; CHECK-NEXT: movl %ecx, %edx
+; CHECK-NEXT: shrl $13, %edx
+; CHECK-NEXT: andl $2, %edx
+; CHECK-NEXT: orl %edi, %edx
+; CHECK-NEXT: shrl $15, %ecx
+; CHECK-NEXT: orl %edx, %ecx
+; CHECK-NEXT: orl %eax, %ecx
+; CHECK-NEXT: movl %ecx, %edx
+; CHECK-NEXT: andl $32768, %edx # imm = 0x8000
+; CHECK-NEXT: movl %esi, %eax
+; CHECK-NEXT: shll $15, %eax
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: andl $2, %edi
+; CHECK-NEXT: shll $13, %edi
+; CHECK-NEXT: orl %eax, %edi
+; CHECK-NEXT: movl %esi, %eax
+; CHECK-NEXT: andl $4, %eax
+; CHECK-NEXT: shll $11, %eax
+; CHECK-NEXT: orl %edi, %eax
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: andl $8, %edi
+; CHECK-NEXT: shll $9, %edi
+; CHECK-NEXT: orl %eax, %edi
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: andl $16, %ebx
+; CHECK-NEXT: shll $7, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %esi, %eax
+; CHECK-NEXT: andl $32, %eax
+; CHECK-NEXT: shll $5, %eax
+; CHECK-NEXT: orl %ebx, %eax
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: andl $64, %edi
+; CHECK-NEXT: shll $3, %edi
+; CHECK-NEXT: leal (%esi,%esi), %ebx
+; CHECK-NEXT: andl $256, %ebx # imm = 0x100
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: shrl %edi
+; CHECK-NEXT: andl $128, %edi
+; CHECK-NEXT: orl %ebx, %edi
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: shrl $3, %ebx
+; CHECK-NEXT: andl $64, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: shrl $5, %edi
+; CHECK-NEXT: andl $32, %edi
+; CHECK-NEXT: orl %ebx, %edi
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: shrl $7, %ebx
+; CHECK-NEXT: andl $16, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: shrl $9, %edi
+; CHECK-NEXT: andl $8, %edi
+; CHECK-NEXT: orl %ebx, %edi
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: shrl $11, %ebx
+; CHECK-NEXT: andl $4, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: shrl $13, %edi
+; CHECK-NEXT: andl $2, %edi
+; CHECK-NEXT: orl %ebx, %edi
+; CHECK-NEXT: shrl $15, %esi
+; CHECK-NEXT: orl %edi, %esi
+; CHECK-NEXT: orl %eax, %esi
+; CHECK-NEXT: movl %esi, %eax
+; CHECK-NEXT: andl $32768, %eax # imm = 0x8000
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: shll $15, %edi
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: andl $2, %ebx
+; CHECK-NEXT: shll $13, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: andl $4, %edi
+; CHECK-NEXT: shll $11, %edi
+; CHECK-NEXT: orl %ebx, %edi
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: andl $8, %ebx
+; CHECK-NEXT: shll $9, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %esi, %ebp
+; CHECK-NEXT: andl $16, %ebp
+; CHECK-NEXT: shll $7, %ebp
+; CHECK-NEXT: orl %ebx, %ebp
+; CHECK-NEXT: movl %esi, %edi
+; CHECK-NEXT: andl $32, %edi
+; CHECK-NEXT: shll $5, %edi
+; CHECK-NEXT: orl %ebp, %edi
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: andl $64, %ebx
+; CHECK-NEXT: shll $3, %ebx
+; CHECK-NEXT: leal (%esi,%esi), %ebp
+; CHECK-NEXT: andl $256, %ebp # imm = 0x100
+; CHECK-NEXT: orl %ebx, %ebp
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: shrl %ebx
+; CHECK-NEXT: andl $128, %ebx
+; CHECK-NEXT: orl %ebp, %ebx
+; CHECK-NEXT: movl %esi, %ebp
+; CHECK-NEXT: shrl $3, %ebp
+; CHECK-NEXT: andl $64, %ebp
+; CHECK-NEXT: orl %ebx, %ebp
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: shrl $5, %ebx
+; CHECK-NEXT: andl $32, %ebx
+; CHECK-NEXT: orl %ebp, %ebx
+; CHECK-NEXT: movl %esi, %ebp
+; CHECK-NEXT: shrl $7, %ebp
+; CHECK-NEXT: andl $16, %ebp
+; CHECK-NEXT: orl %ebx, %ebp
+; CHECK-NEXT: movl %esi, %ebx
+; CHECK-NEXT: shrl $9, %ebx
+; CHECK-NEXT: andl $8, %ebx
+; CHECK-NEXT: orl %ebp, %ebx
+; CHECK-NEXT: movl %esi, %ebp
+; CHECK-NEXT: shrl $11, %ebp
+; CHECK-NEXT: andl $4, %ebp
+; CHECK-NEXT: orl %ebx, %ebp
+; CHECK-NEXT: shrl $13, %esi
+; CHECK-NEXT: andl $2, %esi
+; CHECK-NEXT: orl %ebp, %esi
+; CHECK-NEXT: shrl $15, %eax
+; CHECK-NEXT: orl %esi, %eax
+; CHECK-NEXT: orl %edi, %eax
+; CHECK-NEXT: movl %ecx, %esi
+; CHECK-NEXT: shll $15, %esi
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: andl $2, %edi
+; CHECK-NEXT: shll $13, %edi
+; CHECK-NEXT: orl %esi, %edi
+; CHECK-NEXT: movl %ecx, %esi
+; CHECK-NEXT: andl $4, %esi
+; CHECK-NEXT: shll $11, %esi
+; CHECK-NEXT: orl %edi, %esi
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: andl $8, %edi
+; CHECK-NEXT: shll $9, %edi
+; CHECK-NEXT: orl %esi, %edi
+; CHECK-NEXT: movl %ecx, %ebx
+; CHECK-NEXT: andl $16, %ebx
+; CHECK-NEXT: shll $7, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %ecx, %esi
+; CHECK-NEXT: andl $32, %esi
+; CHECK-NEXT: shll $5, %esi
+; CHECK-NEXT: orl %ebx, %esi
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: andl $64, %edi
+; CHECK-NEXT: shll $3, %edi
+; CHECK-NEXT: leal (%ecx,%ecx), %ebx
+; CHECK-NEXT: andl $256, %ebx # imm = 0x100
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: shrl %edi
+; CHECK-NEXT: andl $128, %edi
+; CHECK-NEXT: orl %ebx, %edi
+; CHECK-NEXT: movl %ecx, %ebx
+; CHECK-NEXT: shrl $3, %ebx
+; CHECK-NEXT: andl $64, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: shrl $5, %edi
+; CHECK-NEXT: andl $32, %edi
+; CHECK-NEXT: orl %ebx, %edi
+; CHECK-NEXT: movl %ecx, %ebx
+; CHECK-NEXT: shrl $7, %ebx
+; CHECK-NEXT: andl $16, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: movl %ecx, %edi
+; CHECK-NEXT: shrl $9, %edi
+; CHECK-NEXT: andl $8, %edi
+; CHECK-NEXT: orl %ebx, %edi
+; CHECK-NEXT: movl %ecx, %ebx
+; CHECK-NEXT: shrl $11, %ebx
+; CHECK-NEXT: andl $4, %ebx
+; CHECK-NEXT: orl %edi, %ebx
+; CHECK-NEXT: shrl $13, %ecx
+; CHECK-NEXT: andl $2, %ecx
+; CHECK-NEXT: orl %ebx, %ecx
+; CHECK-NEXT: shrl $15, %edx
+; CHECK-NEXT: orl %ecx, %edx
+; CHECK-NEXT: orl %esi, %edx
+; CHECK-NEXT: popl %esi
+; CHECK-NEXT: popl %edi
+; CHECK-NEXT: popl %ebx
+; CHECK-NEXT: popl %ebp
+; CHECK-NEXT: retl
+ %b = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> %a)
+ %c = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> %b)
+ ret <2 x i16> %c
+}
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