From 4adb8143cefcd905d50ec50ef227329421fbec25 Mon Sep 17 00:00:00 2001
From: Duraid Madina <duraid@octopus.com.au>
Date: Thu, 3 Nov 2005 10:09:32 +0000
Subject: [PATCH] add pattern to load constant 0 into a predicate reg

llvm-svn: 24164
---
 lib/Target/IA64/IA64InstrInfo.td | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Target/IA64/IA64InstrInfo.td b/lib/Target/IA64/IA64InstrInfo.td
index 7620f4a6ab9..26d5e2c02ba 100644
--- a/lib/Target/IA64/IA64InstrInfo.td
+++ b/lib/Target/IA64/IA64InstrInfo.td
@@ -361,6 +361,8 @@ def SELECTINT : Pat<(select PR:$which, GR:$src1, GR:$src2),
 def : Pat<(i64 immSExt14:$imm), (ADDS r0, immSExt14:$imm)>;
 def : Pat<(i64 imm64:$imm), (MOVL imm64:$imm)>;
 def : Pat<(i1 -1), (CMPEQ r0, r0)>; // TODO: this should just be a ref to p0
+def : Pat<(i1  0), (CMPNE r0, r0)>; // TODO: any instruction actually *using*
+                                    //       this predicate should be killed!
 
 // TODO: support postincrement (reg, imm9) loads+stores - this needs more
 // tablegen support