e6d758de82
This patch marks some library functions as willreturn. On the first pass, I excluded most functions that interact with streams/the filesystem. Along with willreturn, it also adds nounwind to a set of math functions. There probably are a few additional attributes we can add for those, but that should be done separately. Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D94684
20 lines
433 B
LLVM
20 lines
433 B
LLVM
; RUN: opt -S -inferattrs -basic-aa -licm < %s | FileCheck %s
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define void @test(i64* noalias %loc, i8* noalias %a) {
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; CHECK-LABEL: @test
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; CHECK: @strlen
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; CHECK-LABEL: loop:
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br label %loop
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loop:
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%res = call i64 @strlen(i8* %a)
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store i64 %res, i64* %loc
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br label %loop
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}
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; CHECK: declare i64 @strlen(i8* nocapture) #0
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; CHECK: attributes #0 = { argmemonly nofree nounwind readonly willreturn }
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declare i64 @strlen(i8*)
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