forked from OSchip/llvm-project
61 lines
2.0 KiB
LLVM
61 lines
2.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -o - %s -mtriple=x86_64--unknown-linux-gnu | FileCheck %s
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; When compiled and run this should print zero.
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@c = common dso_local local_unnamed_addr global i32 0, align 4
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@f = common dso_local local_unnamed_addr global i32 0, align 4
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@e = common dso_local local_unnamed_addr global i32 0, align 4
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@.str.1 = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
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; We should only see a single store to f (a bytes store to f+3).
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define dso_local void @k(i32 %l) {
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; CHECK-LABEL: k:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movl {{.*}}(%rip), %eax
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; CHECK-NEXT: orl {{.*}}(%rip), %eax
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; CHECK-NEXT: shrl $24, %eax
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; CHECK-NEXT: movb %al, f+{{.*}}(%rip)
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; CHECK-NEXT: retq
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%load = load i32, i32* @c, align 4
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%load6 = load i32, i32* @f, align 4
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%clear7 = and i32 %load6, 16777215
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store i32 %clear7, i32* @c, align 4
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%neg = and i32 %load6, 2097151
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%value = xor i32 %neg, 2097151
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store i32 %load, i32* @c, align 4
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%t0 = load i32, i32* @e, align 4
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%value15 = xor i32 %t0, %value
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%clear16 = and i32 %load6, -16777216
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%set17 = or i32 %value15, %clear16
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store i32 %set17, i32* @f, align 4
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%clear25 = and i32 %set17, -16777216
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%set26 = or i32 %clear25, %clear7
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store i32 %set26, i32* @f, align 4
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ret void
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}
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declare i32 @printf(i8* nocapture readonly, ...)
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define dso_local i32 @main() {
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; CHECK-LABEL: main:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: movl $1, %edi
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; CHECK-NEXT: callq k
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; CHECK-NEXT: movl {{.*}}(%rip), %esi
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; CHECK-NEXT: movl $.L.str.1, %edi
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: callq printf
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: popq %rcx
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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tail call void @k(i32 1)
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%load = load i32, i32* @f, align 4
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%call = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %load)
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ret i32 0
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}
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