From cedcfee405a22b245e869abe8609f094df34085a Mon Sep 17 00:00:00 2001
From: Tom Stellard <thomas.stellard@amd.com>
Date: Fri, 28 Jun 2013 15:46:59 +0000
Subject: R600: Add support for GROUP_BARRIER instruction

Reviewed-by: Vincent Lejeune<vljn at ovi.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185161 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/R600/R600EmitClauseMarkers.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'lib/Target/R600/R600EmitClauseMarkers.cpp')

diff --git a/lib/Target/R600/R600EmitClauseMarkers.cpp b/lib/Target/R600/R600EmitClauseMarkers.cpp
index ff5ce5a..0aea2d7 100644
--- a/lib/Target/R600/R600EmitClauseMarkers.cpp
+++ b/lib/Target/R600/R600EmitClauseMarkers.cpp
@@ -177,7 +177,14 @@ private:
         AluInstCount ++;
         continue;
       }
-      if (I->getOpcode() == AMDGPU::KILLGT) {
+      // XXX: GROUP_BARRIER instructions cannot be in the same ALU clause as:
+      //
+      // * KILL or INTERP instructions
+      // * Any instruction that sets UPDATE_EXEC_MASK or UPDATE_PRED bits
+      // * Uses waterfalling (i.e. INDEX_MODE = AR.X)
+      //
+      // XXX: These checks have not been implemented yet.
+      if (TII->mustBeLastInClause(I->getOpcode())) {
         I++;
         break;
       }
-- 
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