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authorEric Anholt <eric@anholt.net>2013-02-15 19:49:32 -0800
committerEric Anholt <eric@anholt.net>2013-02-19 10:34:03 -0800
commit4c64f65f5d990a83af383790221c242d7195b5a0 (patch)
tree8be828870d8387cfea64b74c474fb740074e57f9 /src/mesa/drivers/dri/i965/brw_fs_cse.cpp
parentc2a6e529c3bc9e62ad93beb1f5ae427dbbba8a38 (diff)
i965/fs: Enable CSE on uniform pull constant loads.
Improves on a major performance regression for the dolphin wii emulator from its move to using UBOs. Performance in the UBO codepath (as replayed through apitrace) is up 21.1% +/- 2.3% (n=26/29). Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_fs_cse.cpp')
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_cse.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_cse.cpp b/src/mesa/drivers/dri/i965/brw_fs_cse.cpp
index a13ca36269..44479d8e9f 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_cse.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_cse.cpp
@@ -66,6 +66,7 @@ is_expression(const fs_inst *const inst)
case BRW_OPCODE_LINE:
case BRW_OPCODE_PLN:
case BRW_OPCODE_MAD:
+ case FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD:
case FS_OPCODE_CINTERP:
case FS_OPCODE_LINTERP:
return true;
@@ -136,8 +137,10 @@ fs_visitor::opt_cse_local(bblock_t *block, exec_list *aeb)
}
/* dest <- temp */
+ assert(inst->dst.type == entry->tmp.type);
fs_inst *copy = new(ralloc_parent(inst))
fs_inst(BRW_OPCODE_MOV, inst->dst, entry->tmp);
+ copy->force_writemask_all = inst->force_writemask_all;
inst->replace_with(copy);
/* Appending an instruction may have changed our bblock end. */