track signedness of formal argument, though we have a fixme here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34620 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 69aa6ae..3842db5 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3111,8 +3111,16 @@
// Flags[31:27] -> OriginalAlignment
// Flags[2] -> isSRet
// Flags[1] -> isInReg
+ // Flags[0] -> isSigned
unsigned Flags = (isInReg << 1) | (isSRet << 2) | (OriginalAlignment << 27);
+ // FIXME: Distinguish between a formal with no [sz]ext attribute from one
+ // that is zero extended!
+ if (FTy->paramHasAttr(j, FunctionType::ZExtAttribute))
+ Flags |= 0;
+ if (FTy->paramHasAttr(j, FunctionType::SExtAttribute))
+ Flags |= 1;
+
switch (getTypeAction(VT)) {
default: assert(0 && "Unknown type action!");
case Legal: