derek.holloway
7502bf64a4
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42 lines
1.3 KiB
LLVM
42 lines
1.3 KiB
LLVM
; RUN: opt < %s -passes=globalopt -S | FileCheck %s
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; When removing the store to @global in @foo, the pass would incorrectly return
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; false. This was caught by the pass return status check that is hidden under
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; EXPENSIVE_CHECKS.
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; CHECK: @global = internal unnamed_addr global ptr null, align 1
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; CHECK-LABEL: @foo
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret i16 undef
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@global = internal unnamed_addr global ptr null, align 1
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; Function Attrs: nofree noinline norecurse nounwind writeonly
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define i16 @foo(i16 %c) local_unnamed_addr #0 {
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entry:
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%local1.addr = alloca i16, align 1
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store ptr %local1.addr, ptr @global, align 1
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ret i16 undef
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}
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; Function Attrs: noinline nounwind writeonly
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define i16 @bar() local_unnamed_addr #1 {
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entry:
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%local2 = alloca [1 x i16], align 1
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call void @llvm.lifetime.start.p0(ptr nonnull %local2)
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store ptr %local2, ptr @global, align 1
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call void @llvm.lifetime.end.p0(ptr nonnull %local2)
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ret i16 undef
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}
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.start.p0(ptr nocapture) #2
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.end.p0(ptr nocapture) #2
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attributes #0 = { nofree noinline norecurse nounwind writeonly }
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attributes #1 = { noinline nounwind writeonly }
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attributes #2 = { argmemonly nounwind willreturn }
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