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ed0ab9dc76
This patch adds a function attribute, nofree, to indicate that a function does not, directly or indirectly, call a memory-deallocation function (e.g., free, C++'s operator delete). Reviewers: jdoerfert Differential Revision: https://reviews.llvm.org/D49165 llvm-svn: 365336
20 lines
421 B
LLVM
20 lines
421 B
LLVM
; RUN: opt -S -inferattrs -basicaa -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 }
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declare i64 @strlen(i8*)
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