Module: Mesa
Branch: master
Commit: e3fc210a4f93c41cd3d1601dd1c937388f117d97
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=e3fc210a4f93c41cd3d1601dd1c937388f117d97
Author: Tom Stellard <tstel...@gmail.com>
Date: Tue Sep 7 10:22:16 2010 -0700
r300/compiler: Fix dataflow bug in presub_helper()
---
.../drivers/dri/r300/compiler/radeon_optimize.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c
b/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c
index 53efbba..88aac94 100644
--- a/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c
@@ -590,6 +590,8 @@ static int presub_helper(
if (inst->U.I.DstReg.WriteMask &
src_reads_dst_mask(s->Inst->U.I.SrcReg[1],
inst->U.I.DstReg)
+ || src_reads_dst_mask(s->Inst->U.I.SrcReg[0],
+ inst->U.I.DstReg)
|| info->IsFlowControl) {
cant_sub = 1;
}
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