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author | Chris Lattner <sabre@nondot.org> | 2008-01-24 17:47:11 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2008-01-24 17:47:11 +0000 |
commit | de6fa5f25f572b79b3dd7bbbe4dba78a54a4b2f8 (patch) | |
tree | cce179e781bb29abe688a3c05df9e3a6ac9db254 /lib/VMCore/Function.cpp | |
parent | 23e202dee012011a25b3b309d3c05d1915767773 (diff) | |
download | external_llvm-de6fa5f25f572b79b3dd7bbbe4dba78a54a4b2f8.zip external_llvm-de6fa5f25f572b79b3dd7bbbe4dba78a54a4b2f8.tar.gz external_llvm-de6fa5f25f572b79b3dd7bbbe4dba78a54a4b2f8.tar.bz2 |
Add hasByValAttr() and hasNoAliasAttr() methods to the Argument class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46314 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore/Function.cpp')
-rw-r--r-- | lib/VMCore/Function.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/VMCore/Function.cpp b/lib/VMCore/Function.cpp index 8e6570a..47e85d7 100644 --- a/lib/VMCore/Function.cpp +++ b/lib/VMCore/Function.cpp @@ -75,6 +75,37 @@ void Argument::setParent(Function *parent) { LeakDetector::removeGarbageObject(this); } +/// getArgNo - Return the index of this formal argument in its containing +/// function. For example in "void foo(int a, float b)" a is 0 and b is 1. +unsigned Argument::getArgNo() const { + const Function *F = getParent(); + assert(F && "Argument is not in a function"); + + Function::const_arg_iterator AI = F->arg_begin(); + unsigned ArgIdx = 0; + for (; &*AI != this; ++AI) + ++ArgIdx; + + return ArgIdx; +} + +/// hasByValAttr - Return true if this argument has the byval attribute on it +/// in its containing function. +bool Argument::hasByValAttr() const { + if (!isa<PointerType>(getType())) return false; + return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::ByVal); +} + +/// hasNoAliasAttr - Return true if this argument has the noalias attribute on +/// it in its containing function. +bool Argument::hasNoAliasAttr() const { + if (!isa<PointerType>(getType())) return false; + return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::NoAlias); +} + + + + //===----------------------------------------------------------------------===// // Helper Methods in Function //===----------------------------------------------------------------------===// |