diff options
Diffstat (limited to 'mesalib/src/mesa/program/register_allocate.c')
| -rw-r--r-- | mesalib/src/mesa/program/register_allocate.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/mesalib/src/mesa/program/register_allocate.c b/mesalib/src/mesa/program/register_allocate.c index 095d53796..a41a6ad6d 100644 --- a/mesalib/src/mesa/program/register_allocate.c +++ b/mesalib/src/mesa/program/register_allocate.c @@ -200,6 +200,27 @@ ra_add_reg_conflict(struct ra_regs *regs, unsigned int r1, unsigned int r2) }
}
+/**
+ * Adds a conflict between base_reg and reg, and also between reg and
+ * anything that base_reg conflicts with.
+ *
+ * This can simplify code for setting up multiple register classes
+ * which are aggregates of some base hardware registers, compared to
+ * explicitly using ra_add_reg_conflict.
+ */
+void
+ra_add_transitive_reg_conflict(struct ra_regs *regs,
+ unsigned int base_reg, unsigned int reg)
+{
+ int i;
+
+ ra_add_reg_conflict(regs, reg, base_reg);
+
+ for (i = 0; i < regs->regs[base_reg].num_conflicts; i++) {
+ ra_add_reg_conflict(regs, reg, regs->regs[base_reg].conflict_list[i]);
+ }
+}
+
unsigned int
ra_alloc_reg_class(struct ra_regs *regs)
{
|