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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
18 lines
341 B
LLVM
18 lines
341 B
LLVM
; RUN: opt -S -functionattrs < %s | FileCheck %s
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; RUN: opt -S -passes=function-attrs < %s | FileCheck %s
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define void @f() {
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; CHECK-LABEL: define void @f() #0 {
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call void @g() [ "unknown"() ]
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ret void
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}
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define void @g() {
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; CHECK-LABEL: define void @g() #0 {
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call void @f()
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ret void
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}
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; CHECK: attributes #0 = { nofree nounwind }
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