From 788dc0f4e51628651850ca3c68cccd713b694052 Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanaka@mips.com>
Date: Mon, 14 Nov 2011 19:06:14 +0000
Subject: [PATCH] 32-to-64-bit extended load.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144554 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/Mips64InstrInfo.td | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/lib/Target/Mips/Mips64InstrInfo.td b/lib/Target/Mips/Mips64InstrInfo.td
index 51b9bf98846..3c972414863 100644
--- a/lib/Target/Mips/Mips64InstrInfo.td
+++ b/lib/Target/Mips/Mips64InstrInfo.td
@@ -219,11 +219,16 @@ def : Pat<(i64 immZExt16:$in),
 def : Pat<(i64 imm:$imm),
           (ORi64 (LUi64 (HI16 imm:$imm)), (LO16 imm:$imm))>;
 
-// zextloadi32_u
-def : Pat<(zextloadi32_u addr:$a), (DSRL32 (DSLL32 (ULW64_P8 addr:$a), 0), 0)>,
-      Requires<[IsN64]>;
-def : Pat<(zextloadi32_u addr:$a), (DSRL32 (DSLL32 (ULW64 addr:$a), 0), 0)>,
-      Requires<[NotN64]>;
+// extended loads
+let Predicates = [NotN64] in {
+  def : Pat<(extloadi32_a addr:$a), (DSRL32 (DSLL32 (LW64 addr:$a), 0), 0)>;
+  def : Pat<(zextloadi32_u addr:$a), (DSRL32 (DSLL32 (ULW64 addr:$a), 0), 0)>;
+}
+let Predicates = [IsN64] in {
+  def : Pat<(extloadi32_a addr:$a), (DSRL32 (DSLL32 (LW64_P8 addr:$a), 0), 0)>;
+  def : Pat<(zextloadi32_u addr:$a), 
+            (DSRL32 (DSLL32 (ULW64_P8 addr:$a), 0), 0)>;
+}
 
 // hi/lo relocs
 def : Pat<(i64 (MipsLo tglobaladdr:$in)), (DADDiu ZERO_64, tglobaladdr:$in)>;