forked from OSchip/llvm-project
25 lines
966 B
LLVM
25 lines
966 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -O0 | FileCheck %s
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; Make sure we only use the less significant bit of the value that feeds the
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; select. Otherwise, we may account for a non-zero value whereas the
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; lsb is zero.
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; <rdar://problem/15651765>
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define i32 @fastisel_select(i1 %exchSub2211_, i1 %trunc_8766) {
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; CHECK-LABEL: fastisel_select:
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; CHECK: ## %bb.0:
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; CHECK-NEXT: ## kill: def $sil killed $sil killed $esi
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; CHECK-NEXT: ## kill: def $dil killed $dil killed $edi
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: subb %sil, %dil
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; CHECK-NEXT: testb $1, %dil
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; CHECK-NEXT: movl $1204476887, %ecx ## imm = 0x47CADBD7
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; CHECK-NEXT: cmovnel %ecx, %eax
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; CHECK-NEXT: retq
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%shuffleInternal15257_8932 = sub i1 %exchSub2211_, %trunc_8766
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%counter_diff1345 = select i1 %shuffleInternal15257_8932, i32 1204476887, i32 0
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ret i32 %counter_diff1345
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}
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