diff options
| author | Alyssa Rosenzweig <[email protected]> | 2019-08-12 15:29:03 -0700 |
|---|---|---|
| committer | Alyssa Rosenzweig <[email protected]> | 2019-08-14 16:42:40 -0700 |
| commit | 2fc44c4dc8077abc5515786933424e85b12f3cc2 (patch) | |
| tree | 0f5ecbc0fa4146efd8e8c98b6eefd3d49969686c /src | |
| parent | 6ed384322455dcac9df724aab1840119ab14f0a3 (diff) | |
pan/midgard: Add dont_eliminate flag
We need to treat fragment writes specially.
Signed-off-by: Alyssa Rosenzweig <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/panfrost/midgard/compiler.h | 3 | ||||
| -rw-r--r-- | src/panfrost/midgard/midgard_opt_dce.c | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/src/panfrost/midgard/compiler.h b/src/panfrost/midgard/compiler.h index cf7547ccda3..52113dda33f 100644 --- a/src/panfrost/midgard/compiler.h +++ b/src/panfrost/midgard/compiler.h @@ -117,6 +117,9 @@ typedef struct midgard_instruction { bool writeout; bool prepacked_branch; + /* Kind of a hack, but hint against aggressive DCE */ + bool dont_eliminate; + /* Masks in a saneish format. One bit per channel, not packed fancy. * Use this instead of the op specific ones, and switch over at emit * time */ diff --git a/src/panfrost/midgard/midgard_opt_dce.c b/src/panfrost/midgard/midgard_opt_dce.c index 9964675763c..f2011831944 100644 --- a/src/panfrost/midgard/midgard_opt_dce.c +++ b/src/panfrost/midgard/midgard_opt_dce.c @@ -97,6 +97,7 @@ midgard_opt_post_move_eliminate(compiler_context *ctx, midgard_block *block, str if (ins->type != TAG_ALU_4) continue; if (ins->compact_branch) continue; if (!OP_IS_MOVE(ins->alu.op)) continue; + if (ins->dont_eliminate) continue; /* Check we're to the same place post-RA */ unsigned iA = ins->ssa_args.dest; |