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panfrost/midgard: Remove opt_copy_prop_tex

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Eventually this should be replaced by proper tex RA / not emitting so
many silly moves to begin with / better general copy prop. For now
remove it since it breaks things.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig 2019-07-02 06:05:18 -07:00
parent b113be7683
commit 0cfa54801e
1 changed files with 0 additions and 50 deletions
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50
src/gallium/drivers/panfrost/midgard/midgard_compile.c
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@ -2225,55 +2225,6 @@ midgard_opt_pos_propagate(compiler_context *ctx, midgard_block *block)
return progress;
}
static bool
midgard_opt_copy_prop_tex(compiler_context *ctx, midgard_block *block)
{
bool progress = false;
mir_foreach_instr_in_block_safe(block, ins) {
if (ins->type != TAG_ALU_4) continue;
if (!OP_IS_MOVE(ins->alu.op)) continue;
unsigned from = ins->ssa_args.src1;
unsigned to = ins->ssa_args.dest;
/* Make sure it's simple enough for us to handle */
if (from >= SSA_FIXED_MINIMUM) continue;
if (from >= ctx->func->impl->ssa_alloc) continue;
if (to < SSA_FIXED_REGISTER(REGISTER_TEXTURE_BASE)) continue;
if (to > SSA_FIXED_REGISTER(REGISTER_TEXTURE_BASE + 1)) continue;
bool eliminated = false;
mir_foreach_instr_in_block_from_rev(block, v, mir_prev_op(ins)) {
/* The texture registers are not SSA so be careful.
* Conservatively, just stop if we hit a texture op
* (even if it may not write) to where we are */
if (v->type != TAG_ALU_4)
break;
if (v->ssa_args.dest == from) {
/* We don't want to track partial writes ... */
if (v->mask == 0xF) {
v->ssa_args.dest = to;
eliminated = true;
}
break;
}
}
if (eliminated)
mir_remove_instruction(ins);
progress |= eliminated;
}
return progress;
}
/* The following passes reorder MIR instructions to enable better scheduling */
static void
@ -2699,7 +2650,6 @@ midgard_compile_shader_nir(nir_shader *nir, midgard_program *program, bool is_bl
mir_foreach_block(ctx, block) {
progress |= midgard_opt_pos_propagate(ctx, block);
progress |= midgard_opt_copy_prop(ctx, block);
progress |= midgard_opt_copy_prop_tex(ctx, block);
progress |= midgard_opt_dead_code_eliminate(ctx, block);
}
} while (progress);