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| author | Duncan Sands <baldrick@free.fr> | 2008-12-31 18:08:59 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2008-12-31 18:08:59 +0000 |
| commit | 9f81f8f01c23674fbae1f8c0a9557dcb6aced4fe (patch) | |
| tree | 0e33d3417585a9e2401d155da5f75a4aba0693b4 /lib | |
| parent | 987453389c8dc10aad5a8744b8a8740d6babf141 (diff) | |
| download | external_llvm-9f81f8f01c23674fbae1f8c0a9557dcb6aced4fe.zip external_llvm-9f81f8f01c23674fbae1f8c0a9557dcb6aced4fe.tar.gz external_llvm-9f81f8f01c23674fbae1f8c0a9557dcb6aced4fe.tar.bz2 | |
Don't analyze arguments already marked 'nocapture'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61532 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/IPO/FunctionAttrs.cpp | 3 | ||||
| -rw-r--r-- | lib/VMCore/Function.cpp | 7 |
2 files changed, 9 insertions, 1 deletions
diff --git a/lib/Transforms/IPO/FunctionAttrs.cpp b/lib/Transforms/IPO/FunctionAttrs.cpp index 9ed605c..1824a71 100644 --- a/lib/Transforms/IPO/FunctionAttrs.cpp +++ b/lib/Transforms/IPO/FunctionAttrs.cpp @@ -263,7 +263,8 @@ bool FunctionAttrs::AddNoCaptureAttrs(const std::vector<CallGraphNode *> &SCC) { continue; for (Function::arg_iterator A = F->arg_begin(), E = F->arg_end(); A!=E; ++A) - if (isa<PointerType>(A->getType()) && !isCaptured(*F, A)) { + if (isa<PointerType>(A->getType()) && !A->hasNoCaptureAttr() && + !isCaptured(*F, A)) { A->addAttr(Attribute::NoCapture); NumNoCapture++; Changed = true; diff --git a/lib/VMCore/Function.cpp b/lib/VMCore/Function.cpp index ddc6ace..f83fe43 100644 --- a/lib/VMCore/Function.cpp +++ b/lib/VMCore/Function.cpp @@ -102,6 +102,13 @@ bool Argument::hasNoAliasAttr() const { return getParent()->paramHasAttr(getArgNo()+1, Attribute::NoAlias); } +/// hasNoCaptureAttr - Return true if this argument has the nocapture attribute +/// on it in its containing function. +bool Argument::hasNoCaptureAttr() const { + if (!isa<PointerType>(getType())) return false; + return getParent()->paramHasAttr(getArgNo()+1, Attribute::NoCapture); +} + /// hasSRetAttr - Return true if this argument has the sret attribute on /// it in its containing function. bool Argument::hasStructRetAttr() const { |