1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -O0 | FileCheck %s
4 ; Make sure we only use the less significant bit of the value that feeds the
5 ; select. Otherwise, we may account for a non-zero value whereas the
7 ; <rdar://problem/15651765>
9 define i32 @fastisel_select(i1 %exchSub2211_, i1 %trunc_8766) {
10 ; CHECK-LABEL: fastisel_select:
12 ; CHECK-NEXT: ## kill: def $sil killed $sil killed $esi
13 ; CHECK-NEXT: ## kill: def $dil killed $dil killed $edi
14 ; CHECK-NEXT: xorl %eax, %eax
15 ; CHECK-NEXT: subb %sil, %dil
16 ; CHECK-NEXT: testb $1, %dil
17 ; CHECK-NEXT: movl $1204476887, %ecx ## imm = 0x47CADBD7
18 ; CHECK-NEXT: cmovnel %ecx, %eax
20 %shuffleInternal15257_8932 = sub i1 %exchSub2211_, %trunc_8766
21 %counter_diff1345 = select i1 %shuffleInternal15257_8932, i32 1204476887, i32 0
22 ret i32 %counter_diff1345