Make getParamAlignment use argument numbers
The method is called "get *Param* Alignment", and is only used for
return values exactly once, so it should take argument indices, not
attribute indices.
Avoids confusing code like:
IsSwiftError = CS->paramHasAttr(ArgIdx, Attribute::SwiftError);
Alignment = CS->getParamAlignment(ArgIdx + 1);
Add getRetAlignment to handle the one case in Value.cpp that wants the
return value alignment.
This is a potentially breaking change for out-of-tree backends that do
their own call lowering.
llvm-svn: 301682
diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp
index d0e25f3..906c5d3 100644
--- a/llvm/lib/IR/Value.cpp
+++ b/llvm/lib/IR/Value.cpp
@@ -649,7 +649,7 @@
Align = DL.getPrefTypeAlignment(AllocatedType);
}
} else if (auto CS = ImmutableCallSite(this))
- Align = CS.getAttributes().getParamAlignment(AttributeList::ReturnIndex);
+ Align = CS.getAttributes().getRetAlignment();
else if (const LoadInst *LI = dyn_cast<LoadInst>(this))
if (MDNode *MD = LI->getMetadata(LLVMContext::MD_align)) {
ConstantInt *CI = mdconst::extract<ConstantInt>(MD->getOperand(0));