30 lines
565 B
LLVM
30 lines
565 B
LLVM
; Zero byte allocas should be deleted.
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; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | \
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; RUN: not grep alloca
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; END.
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declare void %use(...)
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void %test() {
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%X = alloca [0 x int]
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call void(...)* %use([0 x int] *%X)
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%Y = alloca int, uint 0
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call void(...)* %use(int* %Y)
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%Z = alloca {}
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call void(...)* %use({}* %Z)
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ret void
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}
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void %test2() {
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%A = alloca int ;; dead.
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store int 123, int* %A
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ret void
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}
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void %test3() {
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%A = alloca {int} ;; dead.
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%B = getelementptr {int}* %A, int 0, uint 0
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store int 123, int* %B
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ret void
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}
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