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26 lines
941 B
LLVM
26 lines
941 B
LLVM
; RUN: llvm-as < %s | opt -basicaa -load-vn -gcse -instcombine | \
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; RUN: llvm-dis | not grep sub
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%S = type { i32, i8 }
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define i8 @test(i8** %P) {
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%A = load i8** %P ; <i8*> [#uses=1]
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%B = load i8* %A ; <i8> [#uses=1]
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%X = load i8** %P ; <i8*> [#uses=1]
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%Y = load i8* %X ; <i8> [#uses=1]
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%R = sub i8 %B, %Y ; <i8> [#uses=1]
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ret i8 %R
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}
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define i8 @test1(%S** %P) {
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%A = load %S** %P ; <%S*> [#uses=1]
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%B = getelementptr %S* %A, i32 0, i32 1 ; <i8*> [#uses=1]
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%C = load i8* %B ; <i8> [#uses=1]
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%X = load %S** %P ; <%S*> [#uses=1]
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%Y = getelementptr %S* %X, i32 0, i32 1 ; <i8*> [#uses=1]
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%Z = load i8* %Y ; <i8> [#uses=1]
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%R = sub i8 %C, %Z ; <i8> [#uses=1]
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ret i8 %R
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}
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