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9889f09e8d
Issue exposed by noalias or more aggressive alias analysis. Fixes http://llvm.org/PR25422. Differential revision: https://reviews.llvm.org/D21007 llvm-svn: 278451
32 lines
757 B
LLVM
32 lines
757 B
LLVM
; RUN: opt < %s -disable-basicaa -globals-aa -dse -S | FileCheck %s
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@X = internal global i32 4
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define i32 @test0() {
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; CHECK-LABEL: @test0
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; CHECK: store i32 0, i32* @X
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; CHECK-NEXT: call i32 @func_readonly() #0
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; CHECK-NEXT: store i32 1, i32* @X
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store i32 0, i32* @X
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%x = call i32 @func_readonly() #0
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store i32 1, i32* @X
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ret i32 %x
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}
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define i32 @test1() {
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; CHECK-LABEL: @test1
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; CHECK-NOT: store
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; CHECK: call i32 @func_read_argmem_only() #1
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; CHECK-NEXT: store i32 3, i32* @X
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store i32 2, i32* @X
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%x = call i32 @func_read_argmem_only() #1
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store i32 3, i32* @X
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ret i32 %x
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}
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declare i32 @func_readonly() #0
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declare i32 @func_read_argmem_only() #1
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attributes #0 = { readonly nounwind }
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attributes #1 = { readonly argmemonly nounwind }
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