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cd5013eb2f
can't be aliased to other known objects. This allows us to know that byval pointer args don't alias globals, etc. llvm-svn: 46315
19 lines
693 B
LLVM
19 lines
693 B
LLVM
; RUN: llvm-as < %s | opt -gvn | llvm-dis | grep {ret i32 1}
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i686-apple-darwin8"
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%struct.x = type { i32, i32, i32, i32 }
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@g = weak global i32 0 ; <i32*> [#uses=1]
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define i32 @foo(%struct.x* byval %a) nounwind {
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entry:
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%tmp1 = tail call i32 (...)* @bar( %struct.x* %a ) nounwind ; <i32> [#uses=0]
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%tmp2 = getelementptr %struct.x* %a, i32 0, i32 0 ; <i32*> [#uses=2]
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store i32 1, i32* %tmp2, align 4
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store i32 2, i32* @g, align 4
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%tmp4 = load i32* %tmp2, align 4 ; <i32> [#uses=1]
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ret i32 %tmp4
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}
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declare i32 @bar(...)
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