[llvm] r174963 - R600: Fix regression with shadow array sampler on pre-SI GPUs.

[Michel Danzer]

Author: daenzer
Date: Tue Feb 12 06:11:23 2013
New Revision: 174963

URL: http://llvm.org/viewvc/llvm-project?rev=174963&view=rev
Log:
R600: Fix regression with shadow array sampler on pre-SI GPUs.

'R600/SI: Use proper instructions for array/shadow samplers.' removed two
cases from TEX_SHADOW. Vincent Lejeune reported on IRC that this broke some
shadow array piglit tests with the r600g driver. Reinstating the removed
cases should fix this, and still works with radeonsi as well.

I will follow up with some lit tests which would have caught the regression.

NOTE: This is a candidate for the Mesa stable branch.

Tested-by: Vincent Lejeune <vljn at ovi.com>
Reviewed-by: Tom Stellard <thomas.stellard at amd.com>

Modified:
    llvm/trunk/lib/Target/R600/R600Instructions.td

Modified: llvm/trunk/lib/Target/R600/R600Instructions.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/R600/R600Instructions.td?rev=174963&r1=174962&r2=174963&view=diff
==============================================================================
--- llvm/trunk/lib/Target/R600/R600Instructions.td (original)
+++ llvm/trunk/lib/Target/R600/R600Instructions.td Tue Feb 12 06:11:23 2013
@@ -399,7 +399,7 @@ class R600_TEX <bits<11> inst, string op
 def TEX_SHADOW : PatLeaf<
   (imm),
   [{uint32_t TType = (uint32_t)N->getZExtValue();
-    return (TType >= 6 && TType <= 8) || TType == 13;
+    return (TType >= 6 && TType <= 8) || (TType >= 11 && TType <= 13);
   }]
 >;