Shader-db compile times on IVB:
With this patch:
Thread 1 took 368.68 seconds and compiled 16434 shaders
Thread 2 took 372.83 seconds and compiled 16930 shaders
Thread 3 took 370.27 seconds and compiled 16891 shaders
Thread 0 took 377.69 seconds and compiled 16753 shaders
Without this patch:
Thread 0 took 406.49 seconds and compiled 16501 shaders
Thread 3 took 402.31 seconds and compiled 17305 shaders
Thread 1 took 404.31 seconds and compiled 16533 shaders
Thread 2 took 401.41 seconds and compiled 16669 shaders
Shader-db results IVB:
total instructions in shared programs: 9995922 -> 9995889 (-0.00%)
instructions in affected programs: 21378 -> 21345 (-0.15%)
helped: 58
HURT: 63
total cycles in shared programs: 230938039 -> 230940598 (0.00%)
cycles in affected programs: 2580108 -> 2582667 (0.10%)
helped: 954
HURT: 1146
---
src/mesa/drivers/dri/i965/brw_context.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_context.c
b/src/mesa/drivers/dri/i965/brw_context.c
index 01a3e16583d..3710413fe36 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -399,6 +399,8 @@ brw_initialize_context_constants(struct brw_context *brw)
ctx->Const.MaxCombinedShaderOutputResources =
MAX_IMAGE_UNITS + BRW_MAX_DRAW_BUFFERS;
+ ctx->Const.GLSLOptimizeConservatively = true;
+
/* The timestamp register we can read for glGetTimestamp() is
* sometimes only 32 bits, before scaling to nanoseconds (depending
* on kernel).
--
2.17.0
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