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i965/cfg: Add functions to test if a block is a successor/predecessor. 

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
This commit is contained in:
Matt Turner 2014-07-16 12:14:41 -07:00
parent e51e20c35e
commit b7d50beea4
2 changed files with 26 additions and 0 deletions
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24
src/mesa/drivers/dri/i965/brw_cfg.cpp
View File

@ -71,6 +71,30 @@ bblock_t::add_successor(void *mem_ctx, bblock_t *successor)
children.push_tail(::link(mem_ctx, successor));
}
bool
bblock_t::is_predecessor_of(const bblock_t *block) const
{
foreach_list_typed_safe (bblock_link, parent, link, &block->parents) {
if (parent->block == this) {
return true;
}
}
return false;
}
bool
bblock_t::is_successor_of(const bblock_t *block) const
{
foreach_list_typed_safe (bblock_link, child, link, &block->children) {
if (child->block == this) {
return true;
}
}
return false;
}
void
bblock_t::dump(backend_visitor *v)
{

2
src/mesa/drivers/dri/i965/brw_cfg.h
View File

@ -58,6 +58,8 @@ struct bblock_t {
bblock_t();
void add_successor(void *mem_ctx, bblock_t *successor);
bool is_predecessor_of(const bblock_t *block) const;
bool is_successor_of(const bblock_t *block) const;
void dump(backend_visitor *v);
#endif