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26 lines
479 B
LLVM
26 lines
479 B
LLVM
; RUN: llvm-upgrade < %s | llvm-as | \
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; RUN: opt -globalsmodref-aa -load-vn -gcse -instcombine | llvm-dis | \
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; RUN: grep 'ret i32 0'
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%G = internal global int* null
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implementation
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void %test() {
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%A = malloc int
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store int* %A, int** %G
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ret void
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}
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int %test1(int *%P) {
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%g1 = load int** %G
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%h1 = load int* %g1
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; This store cannot alias either G or g1.
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store int 123, int* %P
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%g2 = load int** %G
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%h2 = load int* %g1
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%X = sub int %h1, %h2 ;; -> 0
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ret int %X
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}
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