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the optimizers about this. For example, a readonly function with no uses cannot be removed unless it is also marked nounwind. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71071 91177308-0d34-0410-b5e6-96231b3b80d8
9 lines
189 B
LLVM
9 lines
189 B
LLVM
; RUN: llvm-as < %s | opt -adce | llvm-dis | not grep call
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declare i32 @strlen(i8*) readonly nounwind
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define void @test() {
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call i32 @strlen( i8* null ) ; <i32>:1 [#uses=0]
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ret void
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}
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