commit ab5d0ac02c4174078fed4fed2e3da36eeb8c8807
author Chris Lattner <sabre@nondot.org> Mon Feb 26 02:56:58 2007 +0000
committer Chris Lattner <sabre@nondot.org> Mon Feb 26 02:56:58 2007 +0000
tree c28897856a3f96ad06d73c58f0396d37b5495b3b
parent 5aa8560eab54449ec7547e70656ef7f221aa53a5

track signedness of formal argument, though we have a fixme here.

llvm-svn: 34620

llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 69aa6ae..3842db5 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/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: