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24 lines
518 B
LLVM
24 lines
518 B
LLVM
; Test that pure functions are cse'd away
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; RUN: llvm-upgrade < %s | llvm-as | 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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