[Mesa-dev] [PATCH 6/6] nv50/ir: run DCE backwards
Karol Herbst
nouveau at karolherbst.de
Mon Jan 25 06:57:53 PST 2016
reduces Pass rerun by around 40%
Signed-off-by: Karol Herbst <nouveau at karolherbst.de>
---
src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
index 09a1c64..284a62c 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
@@ -3226,10 +3226,10 @@ DeadCodeElim::buryAll(Program *prog)
bool
DeadCodeElim::visit(BasicBlock *bb)
{
- Instruction *next;
+ Instruction *prev;
- for (Instruction *i = bb->getFirst(); i; i = next) {
- next = i->next;
+ for (Instruction *i = bb->getExit(); i; i = prev) {
+ prev = i->prev;
if (i->isDead()) {
++deadCount;
delete_Instruction(prog, i);
--
2.7.0
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