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21 lines
559 B
LLVM
21 lines
559 B
LLVM
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; RUN: llvm-as < %s | opt -instcombine -disable-output &&
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep call
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;; Test that llvm.stackrestore is removed when possible.
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int* %test1(uint %P) {
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%tmp = call sbyte* %llvm.stacksave()
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call void %llvm.stackrestore(sbyte* %tmp) ;; not restoring anything
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%A = alloca int, uint %P
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ret int* %A
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}
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void %test2(sbyte* %X) {
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call void %llvm.stackrestore(sbyte* %X) ;; no allocas before return.
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ret void
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}
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declare sbyte* %llvm.stacksave()
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declare void %llvm.stackrestore(sbyte*)
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