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feeeb30c32
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19019 91177308-0d34-0410-b5e6-96231b3b80d8
24 lines
503 B
LLVM
24 lines
503 B
LLVM
; Test that pure functions are cse'd away
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; RUN: llvm-as < %s | opt -globalsmodref-aa -load-vn -gcse -instcombine | llvm-dis | not grep sub
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int %pure(int %X) {
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%Y = add int %X, 1
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ret int %Y
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}
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int %test1(int %X) {
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%A = call int %pure(int %X)
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%B = call int %pure(int %X)
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%C = sub int %A, %B
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ret int %C
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}
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int %test2(int %X, int* %P) {
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%A = call int %pure(int %X)
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store int %X, int* %P ;; Does not invalidate 'pure' call.
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%B = call int %pure(int %X)
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%C = sub int %A, %B
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ret int %C
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}
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