derek.holloway
7502bf64a4
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37 lines
1.3 KiB
LLVM
37 lines
1.3 KiB
LLVM
; RUN: opt < %s -passes=globalopt -S -o - | FileCheck %s
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%class.Class = type { i8, i8, i8, i8 }
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@A = local_unnamed_addr global %class.Class undef, align 4
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@B = local_unnamed_addr global %class.Class undef, align 4
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@llvm.global_ctors = appending global [2 x { i32, ptr, ptr }] [
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{ i32, ptr, ptr } { i32 65535, ptr @initA, ptr null },
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{ i32, ptr, ptr } { i32 65535, ptr @initB, ptr null }
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]
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define internal void @initA() section "__TEXT,__StaticInit,regular,pure_instructions" {
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entry:
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store i32 -1, ptr @A, align 4
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ret void
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}
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define internal void @initB() section "__TEXT,__StaticInit,regular,pure_instructions" {
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entry:
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store i8 -1, ptr @B, align 4
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ret void
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}
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; rdar://79503568
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; Check that we don't miscompile when the store covers the whole struct.
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; CHECK-NOT: @A = local_unnamed_addr global %class.Class { i8 -1, i8 undef, i8 undef, i8 undef }, align 4
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; FIXME: We could optimzie this as { i8 -1, i8 -1, i8 -1, i8 -1 } if constant folding were a little smarter.
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; CHECK: @A = local_unnamed_addr global %class.Class undef, align 4
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; Check that we still perform the transform when store is smaller than the width of the 0th element.
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; CHECK: @B = local_unnamed_addr global %class.Class { i8 -1, i8 undef, i8 undef, i8 undef }, align 4
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; CHECK: define internal void @initA()
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; CHECK-NOT: define internal void @initB()
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