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authorMatt Turner <mattst88@gmail.com>2014-06-23 22:07:20 -0700
committerCarl Worth <cworth@cworth.org>2014-07-17 15:59:00 -0700
commit7fcfdfb17b187c2370a0c31da32908973d526eb3 (patch)
tree1a551840c6ce168f826e2ff8acf6c66745f51b27
parent8612a12a62ce1ed3f8989ca3e969e9992429206e (diff)
downloadmesa-7fcfdfb17b187c2370a0c31da32908973d526eb3.tar.gz
mesa-7fcfdfb17b187c2370a0c31da32908973d526eb3.tar.xz
i965/fs: Constant propagate into 2-src math instructions on Gen8.
total instructions in shared programs: 1878133 -> 1876986 (-0.06%) instructions in affected programs: 153007 -> 151860 (-0.75%) Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (cherry picked from commit 038eb649b30dfddaf40888ea28b5e88de3af2214)
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp11
1 files changed, 9 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
index ee73d26e9a..ef149c8b97 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
@@ -361,7 +361,8 @@ fs_visitor::try_copy_propagate(fs_inst *inst, int arg, acp_entry *entry)
static bool
-try_constant_propagate(fs_inst *inst, acp_entry *entry)
+try_constant_propagate(struct brw_context *brw, fs_inst *inst,
+ acp_entry *entry)
{
bool progress = false;
@@ -389,6 +390,12 @@ try_constant_propagate(fs_inst *inst, acp_entry *entry)
progress = true;
break;
+ case SHADER_OPCODE_POW:
+ case SHADER_OPCODE_INT_QUOTIENT:
+ case SHADER_OPCODE_INT_REMAINDER:
+ if (brw->gen < 8)
+ break;
+ /* fallthrough */
case BRW_OPCODE_BFI1:
case BRW_OPCODE_ASR:
case BRW_OPCODE_SHL:
@@ -530,7 +537,7 @@ fs_visitor::opt_copy_propagate_local(void *copy_prop_ctx, bblock_t *block,
foreach_list(entry_node, &acp[inst->src[i].reg % ACP_HASH_SIZE]) {
acp_entry *entry = (acp_entry *)entry_node;
- if (try_constant_propagate(inst, entry))
+ if (try_constant_propagate(brw, inst, entry))
progress = true;
if (try_copy_propagate(inst, i, entry))