[Mesa-dev] [PATCH v2 6/7] nv50/ir: run DCE backwards

[Karol Herbst]

reduces calls up to 50%

Signed-off-by: Karol Herbst <nouveau at karolherbst.de>
Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>
---
 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 f186d74..0c98100 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
@@ -3206,10 +3206,10 @@ 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