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intel/compiler/fs: Switch liveness analysis to IR analysis framework

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This involves wrapping fs_live_variables in a BRW_ANALYSIS object and
hooking it up to invalidate_analysis() so it's properly invalidated.
Seems like a lot of churn but it's fairly straightforward.  The
fs_visitor invalidate_ and calculate_live_intervals() methods are no
longer necessary after this change.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4012>
This commit is contained in:
Francisco Jerez
2016-03-13 16:25:57 -07:00
committed by Matt Turner
parent bb8cfa6837
commit ea44de6d8c
12 changed files with 84 additions and 97 deletions
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13
src/intel/compiler/brw_fs_saturate_propagation.cpp
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@@ -25,6 +25,8 @@
#include "brw_fs_live_variables.h"
#include "brw_cfg.h"
using namespace brw;
/** @file brw_fs_saturate_propagation.cpp
*
* Implements a pass that propagates the SAT modifier from a MOV.SAT into the
@@ -43,7 +45,7 @@
*/
static bool
opt_saturate_propagation_local(fs_visitor *v, bblock_t *block)
opt_saturate_propagation_local(const fs_live_variables &live, bblock_t *block)
{
bool progress = false;
int ip = block->end_ip + 1;
@@ -59,8 +61,8 @@ opt_saturate_propagation_local(fs_visitor *v, bblock_t *block)
inst->src[0].abs)
continue;
int src_var = v->live_intervals->var_from_reg(inst->src[0]);
int src_end_ip = v->live_intervals->end[src_var];
int src_var = live.var_from_reg(inst->src[0]);
int src_end_ip = live.end[src_var];
bool interfered = false;
foreach_inst_in_block_reverse_starting_from(fs_inst, scan_inst, inst) {
@@ -149,12 +151,11 @@ opt_saturate_propagation_local(fs_visitor *v, bblock_t *block)
bool
fs_visitor::opt_saturate_propagation()
{
const fs_live_variables &live = live_analysis.require();
bool progress = false;
calculate_live_intervals();
foreach_block (block, cfg) {
progress = opt_saturate_propagation_local(this, block) || progress;
progress = opt_saturate_propagation_local(live, block) || progress;
}
/* Live intervals are still valid. */