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20fad44ede
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21795 91177308-0d34-0410-b5e6-96231b3b80d8
17 lines
343 B
LLVM
17 lines
343 B
LLVM
; RUN: llvm-as < %s | opt -basicaa -load-vn -gcse -instcombine | llvm-dis | grep 'ret int 0'
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declare void %foo(int*)
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declare void %bar()
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int %test() {
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%A = alloca int
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call void %foo(int* %A)
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%X = load int* %A
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tail call void %bar() ;; Cannot modify *%A because it's on the stack.
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%Y = load int* %A
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%Z = sub int %X, %Y
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ret int %Z
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}
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