This is similar to a commit that did the same for the FS.
Shaves several more instructions off of the VS in Lightsmark, but no
statistically significant performance difference (n=5).
---
src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index 2436bc9..898e78d 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -313,7 +313,9 @@ vec4_visitor::emit_math(opcode opcode, dst_reg dst, src_reg
src)
return;
}
- if (intel->gen >= 6) {
+ if (intel->gen >= 7) {
+ emit(opcode, dst, src);
+ } else if (intel->gen == 6) {
return emit_math1_gen6(opcode, dst, src);
} else {
return emit_math1_gen4(opcode, dst, src);
@@ -380,7 +382,9 @@ vec4_visitor::emit_math(enum opcode opcode,
return;
}
- if (intel->gen >= 6) {
+ if (intel->gen >= 7) {
+ emit(opcode, dst, src0, src1);
+ } else if (intel->gen == 6) {
return emit_math2_gen6(opcode, dst, src0, src1);
} else {
return emit_math2_gen4(opcode, dst, src0, src1);
--
1.7.7.3
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