From f01748355360ac98c772ce8b82ca0e6c2f94629a Mon Sep 17 00:00:00 2001 From: Christoph Bumiller Date: Tue, 22 Feb 2011 21:50:17 +0100 Subject: [PATCH] nvc0: kick out empty live ranges They affect overlap tests even though they're actually empty. --- src/gallium/drivers/nvc0/nvc0_pc_regalloc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/gallium/drivers/nvc0/nvc0_pc_regalloc.c b/src/gallium/drivers/nvc0/nvc0_pc_regalloc.c index d7213949483..f4afe083e2d 100644 --- a/src/gallium/drivers/nvc0/nvc0_pc_regalloc.c +++ b/src/gallium/drivers/nvc0/nvc0_pc_regalloc.c @@ -87,6 +87,9 @@ add_range_ex(struct nv_value *val, int bgn, int end, struct nv_range *new_range) { struct nv_range *range, **nextp = &val->livei; + if (bgn == end) /* [a, a) is invalid / empty */ + return TRUE; + for (range = val->livei; range; range = range->next) { if (end < range->bgn) break; /* insert before */ -- 2.30.2