From ab5d0ac02c4174078fed4fed2e3da36eeb8c8807 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 26 Feb 2007 02:56:58 +0000
Subject: [PATCH] track signedness of formal argument, though we have a fixme
here.
llvm-svn: 34620
---
llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 69aa6aedf868..3842db5d9d09 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3111,8 +3111,16 @@ TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
// 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: