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66d0884954
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12416 91177308-0d34-0410-b5e6-96231b3b80d8
14 lines
386 B
LLVM
14 lines
386 B
LLVM
; RUN: llvm-as < %s | opt -basicaa -load-vn -gcse -instcombine | llvm-dis | not grep sub
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declare int %strlen(sbyte*)
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declare void %use(int %X)
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sbyte %test(sbyte* %P, sbyte* %Q) {
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%A = load sbyte* %Q
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%X = call int %strlen(sbyte* %P)
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%B = load sbyte* %Q ;; CSE with A.
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call void %use(int %X) ;; make strlen not dead
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%C = sub sbyte %A, %B
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ret sbyte %C
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}
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