diff options
Diffstat (limited to 'src/mesa/program')
| -rw-r--r-- | src/mesa/program/register_allocate.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/mesa/program/register_allocate.c b/src/mesa/program/register_allocate.c index c763b9602da..d5b44231fd0 100644 --- a/src/mesa/program/register_allocate.c +++ b/src/mesa/program/register_allocate.c @@ -99,7 +99,12 @@ struct ra_regs { }; struct ra_class { - bool *regs; + /** + * Bitset indicating which registers belong to this class. + * + * (If bit N is set, then register N belongs to this class.) + */ + BITSET_WORD *regs; /** * p(B) in Runeson/Nyström paper. @@ -269,7 +274,7 @@ ra_alloc_reg_class(struct ra_regs *regs) class = rzalloc(regs, struct ra_class); regs->classes[regs->class_count] = class; - class->regs = rzalloc_array(class, bool, regs->count); + class->regs = rzalloc_array(class, BITSET_WORD, BITSET_WORDS(regs->count)); return regs->class_count++; } @@ -279,7 +284,7 @@ ra_class_add_reg(struct ra_regs *regs, unsigned int c, unsigned int r) { struct ra_class *class = regs->classes[c]; - class->regs[r] = true; + BITSET_SET(class->regs, r); class->p++; } @@ -289,7 +294,7 @@ ra_class_add_reg(struct ra_regs *regs, unsigned int c, unsigned int r) static bool reg_belongs_to_class(unsigned int r, struct ra_class *c) { - return c->regs[r]; + return BITSET_TEST(c->regs, r); } /** @@ -333,7 +338,7 @@ ra_set_finalize(struct ra_regs *regs, unsigned int **q_values) for (i = 0; i < regs->regs[rc].num_conflicts; i++) { unsigned int rb = regs->regs[rc].conflict_list[i]; - if (regs->classes[b]->regs[rb]) + if (BITSET_TEST(regs->classes[b]->regs, rb)) conflicts++; } max_conflicts = MAX2(max_conflicts, conflicts); |