diff options
author | Eric Anholt <eric@anholt.net> | 2012-06-06 10:57:54 -0700 |
---|---|---|
committer | Eric Anholt <eric@anholt.net> | 2012-07-03 12:55:47 -0700 |
commit | 458f7f014139deb48a4cf0a9e6bdca3a57d24208 (patch) | |
tree | 0332e6b946da7d63afdf07f92f500fa041820f4d | |
parent | 5fb178ee43fbc364b150fe6c6f0f79e8d8b0b179 (diff) |
i965/fs: Move copy propagation test out to a separate function.
It's going to get more complicated in a moment.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.h | 4 | ||||
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp | 22 |
2 files changed, 20 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h index ee067321f5b..507a63751fa 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.h +++ b/src/mesa/drivers/dri/i965/brw_fs.h @@ -50,6 +50,9 @@ extern "C" { #include "glsl/ir.h" class fs_bblock; +namespace { + class acp_entry; +} enum register_file { BAD_FILE, @@ -492,6 +495,7 @@ public: bool opt_cse(); bool opt_cse_local(fs_bblock *block, exec_list *aeb); bool opt_copy_propagate(); + bool try_copy_propagate(fs_inst *inst, int arg, acp_entry *entry); bool opt_copy_propagate_local(void *mem_ctx, fs_bblock *block, exec_list *acp); bool register_coalesce(); 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 23960514bf0..d510e5b3609 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp @@ -31,6 +31,21 @@ struct acp_entry : public exec_node { }; } +bool +fs_visitor::try_copy_propagate(fs_inst *inst, int arg, acp_entry *entry) +{ + if (inst->src[arg].file != entry->dst.file || + inst->src[arg].reg != entry->dst.reg || + inst->src[arg].reg_offset != entry->dst.reg_offset) { + return false; + } + + inst->src[arg].reg = entry->src.reg; + inst->src[arg].reg_offset = entry->src.reg_offset; + + return true; +} + /** @file brw_fs_copy_propagation.cpp * * Support for local copy propagation by walking the list of instructions @@ -58,13 +73,8 @@ fs_visitor::opt_copy_propagate_local(void *mem_ctx, acp_entry *entry = (acp_entry *)entry_node; for (int i = 0; i < 3; i++) { - if (inst->src[i].file == entry->dst.file && - inst->src[i].reg == entry->dst.reg && - inst->src[i].reg_offset == entry->dst.reg_offset) { - inst->src[i].reg = entry->src.reg; - inst->src[i].reg_offset = entry->src.reg_offset; + if (try_copy_propagate(inst, i, entry)) progress = true; - } } } |