From 26ebd7aafcd47f41bfeb57b7b396af6deb8bbbe6 Mon Sep 17 00:00:00 2001
From: Vincent Lejeune <vljn@ovi.com>
Date: Wed, 17 Apr 2013 15:17:39 +0000
Subject: R600: Make Export Instruction not duplicable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179686 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/R600/R600Instructions.td | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'lib/Target/R600/R600Instructions.td')

diff --git a/lib/Target/R600/R600Instructions.td b/lib/Target/R600/R600Instructions.td
index 1408966a192..da8228dc725 100644
--- a/lib/Target/R600/R600Instructions.td
+++ b/lib/Target/R600/R600Instructions.td
@@ -738,7 +738,9 @@ multiclass SteamOutputExportPattern<Instruction ExportInst,
       4095, imm:$mask, buf3inst, 0)>;
 }
 
-let usesCustomInserter = 1 in {
+// Export Instructions should not be duplicated by TailDuplication pass
+// (which assumes that duplicable instruction are affected by exec mask)
+let usesCustomInserter = 1, isNotDuplicable = 1 in {
 
 class ExportSwzInst : InstR600ISA<(
     outs),
-- 
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