pan/midgard: Move DCE into its own file
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
parent
f9e619fa82
commit
082485d663
|
@ -502,5 +502,6 @@ nir_clamp_psiz(nir_shader *shader, float min_size, float max_size);
|
|||
bool midgard_opt_copy_prop(compiler_context *ctx, midgard_block *block);
|
||||
bool midgard_opt_combine_projection(compiler_context *ctx, midgard_block *block);
|
||||
bool midgard_opt_varying_projection(compiler_context *ctx, midgard_block *block);
|
||||
bool midgard_opt_dead_code_eliminate(compiler_context *ctx, midgard_block *block);
|
||||
|
||||
#endif
|
||||
|
|
|
@ -31,6 +31,7 @@ libpanfrost_midgard_files = files(
|
|||
'midgard_ops.c',
|
||||
'mir_promote_uniforms.c',
|
||||
'midgard_opt_copy_prop.c',
|
||||
'midgard_opt_dce.c',
|
||||
'midgard_opt_perspective.c',
|
||||
'cppwrap.cpp',
|
||||
'disassemble.c',
|
||||
|
|
|
@ -1962,28 +1962,6 @@ embedded_to_inline_constant(compiler_context *ctx)
|
|||
}
|
||||
}
|
||||
|
||||
/* Basic dead code elimination on the MIR itself, which cleans up e.g. the
|
||||
* texture pipeline */
|
||||
|
||||
static bool
|
||||
midgard_opt_dead_code_eliminate(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 (ins->compact_branch) continue;
|
||||
|
||||
if (ins->ssa_args.dest >= SSA_FIXED_MINIMUM) continue;
|
||||
if (mir_is_live_after(ctx, block, ins, ins->ssa_args.dest)) continue;
|
||||
|
||||
mir_remove_instruction(ins);
|
||||
progress = true;
|
||||
}
|
||||
|
||||
return progress;
|
||||
}
|
||||
|
||||
/* Dead code elimination for branches at the end of a block - only one branch
|
||||
* per block is legal semantically */
|
||||
|
||||
|
|
|
@ -0,0 +1,46 @@
|
|||
/*
|
||||
* Copyright (C) 2018 Alyssa Rosenzweig
|
||||
* Copyright (C) 2019 Collabora, Ltd.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
* copy of this software and associated documentation files (the "Software"),
|
||||
* to deal in the Software without restriction, including without limitation
|
||||
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
* and/or sell copies of the Software, and to permit persons to whom the
|
||||
* Software is furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice (including the next
|
||||
* paragraph) shall be included in all copies or substantial portions of the
|
||||
* Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
|
||||
#include "compiler.h"
|
||||
|
||||
/* Basic dead code elimination on the MIR itself */
|
||||
|
||||
bool
|
||||
midgard_opt_dead_code_eliminate(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 (ins->compact_branch) continue;
|
||||
|
||||
if (ins->ssa_args.dest >= SSA_FIXED_MINIMUM) continue;
|
||||
if (mir_is_live_after(ctx, block, ins, ins->ssa_args.dest)) continue;
|
||||
|
||||
mir_remove_instruction(ins);
|
||||
progress = true;
|
||||
}
|
||||
|
||||
return progress;
|
||||
}
|
Loading…
Reference in New Issue