forked from OSchip/llvm-project
30 lines
1008 B
LLVM
30 lines
1008 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
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; The and with -9 has multiple users which prevents
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; SimplifyDemandedBits from touching it. The truncate only
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; demands the lower 8 bits. X86ISelDAGToDAG.cpp wants form
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; a test instruction from the icmp+trunc+and, but needs to
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; mask the -9 to 8 bits since SimplifyDemandedBits didn't.
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define i32 @foo(i16 signext %0, i32 %1, i32* nocapture %2) {
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0:
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; CHECK-NEXT: incl %edi
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; CHECK-NEXT: movl %edi, %eax
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; CHECK-NEXT: andl $65527, %eax # imm = 0xFFF7
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; CHECK-NEXT: movl %eax, (%rdx)
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: testb $-9, %dil
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; CHECK-NEXT: cmovel %esi, %eax
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; CHECK-NEXT: retq
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%4 = add i16 %0, 1
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%5 = and i16 %4, -9
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%6 = zext i16 %5 to i32
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store i32 %6, i32* %2, align 4
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%7 = trunc i16 %5 to i8
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%8 = icmp eq i8 %7, 0
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%9 = select i1 %8, i32 %1, i32 0
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ret i32 %9
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}
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