diff options
Diffstat (limited to 'lib/IR/Function.cpp')
| -rw-r--r-- | lib/IR/Function.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/IR/Function.cpp b/lib/IR/Function.cpp index 7f7efabf..bf9d949 100644 --- a/lib/IR/Function.cpp +++ b/lib/IR/Function.cpp @@ -131,6 +131,15 @@ bool Argument::hasReturnedAttr() const { hasAttribute(getArgNo()+1, Attribute::Returned); } +/// Return true if this argument has the readonly or readnone attribute on it +/// in its containing function. +bool Argument::onlyReadsMemory() const { + return getParent()->getAttributes(). + hasAttribute(getArgNo()+1, Attribute::ReadOnly) || + getParent()->getAttributes(). + hasAttribute(getArgNo()+1, Attribute::ReadNone); +} + /// addAttr - Add attributes to an argument. void Argument::addAttr(AttributeSet AS) { assert(AS.getNumSlots() <= 1 && @@ -711,4 +720,3 @@ bool Function::callsFunctionThatReturnsTwice() const { return false; } - |