[Mesa-dev] [PATCH 32/53] intel/fs: Mark LINTERP opcode as writing accumulator implicitly on pre-Gen7.

[Jason Ekstrand]

From: Francisco Jerez <currojerez at riseup.net>

---
 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 141b64e..61211ef 100644
--- a/src/intel/compiler/brw_shader.cpp
+++ b/src/intel/compiler/brw_shader.cpp
@@ -984,7 +984,8 @@ 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
-- 
2.5.0.400.gff86faf