derek.holloway
7502bf64a4
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39 lines
1.6 KiB
LLVM
39 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mcpu=btver2 %s -o - | FileCheck %s
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; Test desc: two functions (foo, bar) with byval arguments, should not have
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; reads/writes from/to byval storage re-ordered.
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; When broken, five "1" constants are written into the byval %struct.face,
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; but the subsequent byval read of that struct (call to bar) gets re-ordered
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; before those writes, illegally.
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source_filename = "test.c"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-linux-gnu"
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%struct.face = type { [7 x i32] }
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; Function Attrs: noinline nounwind uwtable
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declare void @bar(ptr byval(%struct.face) nocapture readonly align 8);
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; Function Attrs: noinline nounwind uwtable
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define void @foo(ptr byval(%struct.face) nocapture align 8) local_unnamed_addr {
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0:
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; CHECK-NEXT: subq $40, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 48
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; CHECK-NEXT: vmovaps {{.*#+}} xmm0 = [1,1,1,1]
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; CHECK-NEXT: vmovaps %xmm0, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: movl $1, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: vmovups {{[0-9]+}}(%rsp), %xmm1
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; CHECK-NEXT: vmovups %xmm1, {{[0-9]+}}(%rsp)
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; CHECK-NEXT: vmovups %xmm0, (%rsp)
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; CHECK-NEXT: callq bar@PLT
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; CHECK-NEXT: addq $40, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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store <4 x i32> <i32 1, i32 1, i32 1, i32 1>, ptr %0, align 8
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%2 = getelementptr inbounds %struct.face, ptr %0, i64 0, i32 0, i64 4
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store i32 1, ptr %2, align 8
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call void @bar(ptr byval(%struct.face) nonnull align 8 %0)
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ret void
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}
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