From 341fa09a3c842e8a0df3510d3f9af186ede976c9 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 26 Aug 2010 06:57:07 +0000
Subject: [PATCH] Add a hackaround for PR7993 which is causing failures on x86
 builders that lack sse2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112175 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 2 ++
 test/CodeGen/X86/sse1.ll                 | 6 ++++++
 test/CodeGen/X86/vec_cast.ll             | 5 +++--
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 849220a7bfe..433ba6524a4 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -1314,6 +1314,8 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
           break;
         case TargetLowering::Expand:
           if (!TLI.isLoadExtLegal(ISD::EXTLOAD, SrcVT)) {
+            // FIXME: If SrcVT isn't legal, then this introduces an illegal
+            // type.
             SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(),
                                        LD->getSrcValueOffset(),
                                        LD->isVolatile(), LD->isNonTemporal(),
diff --git a/test/CodeGen/X86/sse1.ll b/test/CodeGen/X86/sse1.ll
index 3ab384072aa..6e7aad84de6 100644
--- a/test/CodeGen/X86/sse1.ll
+++ b/test/CodeGen/X86/sse1.ll
@@ -12,3 +12,9 @@ define <8 x i16> @test2(<8 x i32> %a) nounwind {
   %c = trunc <8 x i32> %a to <8 x i16>            ; <<8 x i16>> [#uses=1]
   ret <8 x i16> %c
 }
+
+; PR7993
+;define <4 x i32> @test3(<4 x i16> %a) nounwind {
+;  %c = sext <4 x i16> %a to <4 x i32>             ; <<4 x i32>> [#uses=1]
+;  ret <4 x i32> %c
+;}
diff --git a/test/CodeGen/X86/vec_cast.ll b/test/CodeGen/X86/vec_cast.ll
index 6f18d13cc9d..fd3e84e7fe0 100644
--- a/test/CodeGen/X86/vec_cast.ll
+++ b/test/CodeGen/X86/vec_cast.ll
@@ -1,5 +1,6 @@
-; RUN: llc < %s -march=x86-64 
-; RUN: llc < %s -march=x86-64 -disable-mmx
+; RUN: llc < %s -march=x86-64 -mcpu=core2
+; RUN: llc < %s -march=x86-64 -mcpu=core2 -disable-mmx
+
 
 define <8 x i32> @a(<8 x i16> %a) nounwind {
   %c = sext <8 x i16> %a to <8 x i32>