[llvm] r335395 - [PowerPC] add more tests for bit hacking opportunities with setcc; NFC
Sanjay Patel via llvm-commits
llvm-commits at lists.llvm.org
Fri Jun 22 15:06:33 PDT 2018
Author: spatel
Date: Fri Jun 22 15:06:33 2018
New Revision: 335395
URL: http://llvm.org/viewvc/llvm-project?rev=335395&view=rev
Log:
[PowerPC] add more tests for bit hacking opportunities with setcc; NFC
Missed cases where the input and output are the same size in rL335390.
Modified:
llvm/trunk/test/CodeGen/PowerPC/bool-math.ll
Modified: llvm/trunk/test/CodeGen/PowerPC/bool-math.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/bool-math.ll?rev=335395&r1=335394&r2=335395&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/bool-math.ll (original)
+++ llvm/trunk/test/CodeGen/PowerPC/bool-math.ll Fri Jun 22 15:06:33 2018
@@ -1,6 +1,20 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=powerpc64le-- -verify-machineinstrs | FileCheck %s
+define i32 @sub_zext_cmp_mask_same_size_result(i32 %x) {
+; CHECK-LABEL: sub_zext_cmp_mask_same_size_result:
+; CHECK: # %bb.0:
+; CHECK-NEXT: nor 3, 3, 3
+; CHECK-NEXT: clrlwi 3, 3, 31
+; CHECK-NEXT: subfic 3, 3, -27
+; CHECK-NEXT: blr
+ %a = and i32 %x, 1
+ %c = icmp eq i32 %a, 0
+ %z = zext i1 %c to i32
+ %r = sub i32 -27, %z
+ ret i32 %r
+}
+
define i32 @sub_zext_cmp_mask_wider_result(i8 %x) {
; CHECK-LABEL: sub_zext_cmp_mask_wider_result:
; CHECK: # %bb.0:
@@ -29,6 +43,21 @@ define i8 @sub_zext_cmp_mask_narrower_re
ret i8 %r
}
+define i8 @add_zext_cmp_mask_same_size_result(i8 %x) {
+; CHECK-LABEL: add_zext_cmp_mask_same_size_result:
+; CHECK: # %bb.0:
+; CHECK-NEXT: xori 3, 3, 65535
+; CHECK-NEXT: xoris 3, 3, 65535
+; CHECK-NEXT: clrldi 3, 3, 63
+; CHECK-NEXT: ori 3, 3, 26
+; CHECK-NEXT: blr
+ %a = and i8 %x, 1
+ %c = icmp eq i8 %a, 0
+ %z = zext i1 %c to i8
+ %r = add i8 %z, 26
+ ret i8 %r
+}
+
define i32 @add_zext_cmp_mask_wider_result(i8 %x) {
; CHECK-LABEL: add_zext_cmp_mask_wider_result:
; CHECK: # %bb.0:
@@ -59,6 +88,19 @@ define i8 @add_zext_cmp_mask_narrower_re
ret i8 %r
}
+define i32 @low_bit_select_constants_bigger_false_same_size_result(i32 %x) {
+; CHECK-LABEL: low_bit_select_constants_bigger_false_same_size_result:
+; CHECK: # %bb.0:
+; CHECK-NEXT: not 3, 3
+; CHECK-NEXT: clrldi 3, 3, 63
+; CHECK-NEXT: subfic 3, 3, 43
+; CHECK-NEXT: blr
+ %a = and i32 %x, 1
+ %c = icmp eq i32 %a, 0
+ %r = select i1 %c, i32 42, i32 43
+ ret i32 %r
+}
+
define i64 @low_bit_select_constants_bigger_false_wider_result(i32 %x) {
; CHECK-LABEL: low_bit_select_constants_bigger_false_wider_result:
; CHECK: # %bb.0:
@@ -85,6 +127,21 @@ define i16 @low_bit_select_constants_big
ret i16 %r
}
+define i8 @low_bit_select_constants_bigger_true_same_size_result(i8 %x) {
+; CHECK-LABEL: low_bit_select_constants_bigger_true_same_size_result:
+; CHECK: # %bb.0:
+; CHECK-NEXT: xori 3, 3, 65535
+; CHECK-NEXT: xoris 3, 3, 65535
+; CHECK-NEXT: clrldi 3, 3, 63
+; CHECK-NEXT: ori 3, 3, 65506
+; CHECK-NEXT: oris 3, 3, 65535
+; CHECK-NEXT: blr
+ %a = and i8 %x, 1
+ %c = icmp eq i8 %a, 0
+ %r = select i1 %c, i8 227, i8 226
+ ret i8 %r
+}
+
define i32 @low_bit_select_constants_bigger_true_wider_result(i8 %x) {
; CHECK-LABEL: low_bit_select_constants_bigger_true_wider_result:
; CHECK: # %bb.0:
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