fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-05 16:08:04 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

i965: Add a basic-block aware backend_instruction::remove method.

Browse source 
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
This commit is contained in:
Matt Turner 2014-07-12 21:16:34 -07:00
parent 240adc1346
commit dc527fbf7d
2 changed files with 50 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

46
src/mesa/drivers/dri/i965/brw_shader.cpp
View file

@ -732,6 +732,52 @@ backend_instruction::has_side_effects() const
}
}
#ifndef NDEBUG
static bool
inst_is_in_block(const bblock_t *block, const backend_instruction *inst)
{
bool found = false;
foreach_inst_in_block (backend_instruction, i, block) {
if (inst == i) {
found = true;
}
}
return found;
}
#endif
static void
adjust_later_block_ips(bblock_t *start_block, int ip_adjustment)
{
for (bblock_t *block_iter = (bblock_t *)start_block->link.next;
!block_iter->link.is_tail_sentinel();
block_iter = (bblock_t *)block_iter->link.next) {
block_iter->start_ip += ip_adjustment;
block_iter->end_ip += ip_adjustment;
}
}
void
backend_instruction::remove(bblock_t *block)
{
assert(inst_is_in_block(block, this) || !"Instruction not in block");
adjust_later_block_ips(block, -1);
if (block->start_ip == block->end_ip) {
block->cfg->remove_block(block);
} else {
block->end_ip--;
if (block->start == this)
block->start = (backend_instruction *)this->next;
if (block->end == this)
block->end = (backend_instruction *)this->prev;
}
exec_node::remove();
}
void
backend_visitor::dump_instructions()
{

4
src/mesa/drivers/dri/i965/brw_shader.h
View file

@ -78,6 +78,7 @@ struct backend_reg
};
struct cfg_t;
struct bblock_t;
#ifdef __cplusplus
struct backend_instruction : public exec_node {
@ -89,6 +90,9 @@ struct backend_instruction : public exec_node {
bool reads_accumulator_implicitly() const;
bool writes_accumulator_implicitly(struct brw_context *brw) const;
using exec_node::remove;
void remove(bblock_t *block);
/**
* True if the instruction has side effects other than writing to
* its destination registers. You are expected not to reorder or