[Mesa-dev] [PATCH 25/47] (0025) i965/fs: Mark LINTERP opcode as writing accumulator implicitly on pre-Gen7.

[Shaofeng Tang]

From: Francisco Jerez <curroje...@riseup.net>

Change-Id: I2baf1b2e407b1034a0d23b4e558f7caf9aa10248
---
 src/intel/compiler/brw_shader.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/intel/compiler/brw_shader.cpp 
b/src/intel/compiler/brw_shader.cpp
index 954f8b0..8e016f2 100644
--- a/src/intel/compiler/brw_shader.cpp
+++ b/src/intel/compiler/brw_shader.cpp
@@ -978,7 +978,8 @@ backend_instruction::writes_accumulator_implicitly(const 
struct gen_device_info
    return writes_accumulator ||
           (devinfo->gen < 6 &&
            ((opcode >= BRW_OPCODE_ADD && opcode < BRW_OPCODE_NOP) ||
-            (opcode >= FS_OPCODE_DDX_COARSE && opcode <= FS_OPCODE_LINTERP)));
+            (opcode >= FS_OPCODE_DDX_COARSE && opcode <= FS_OPCODE_LINTERP))) 
||
+          (devinfo->gen < 7 && opcode == FS_OPCODE_LINTERP);
 }
 
 bool
-- 
2.7.4

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