nv50/ir: get rid of memory stores with nop values

[mesa.git] / src / gallium / drivers / nouveau / codegen / nv50_ir_peephole.cpp

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
index 81ee111a1b095a6f2a7abf2bae91d388be6baa94..05b8db4a3d8dcc23e1e10f70af79b83025e33280 100644 (file)
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
@@ -2533,6 +2533,12 @@ MemoryOpt::runOpt(BasicBlock *bb)
          }
       } else
       if (ldst->op == OP_STORE || ldst->op == OP_EXPORT) {
+         if (typeSizeof(ldst->dType) == 4 &&
+             ldst->src(1).getFile() == FILE_GPR &&
+             ldst->getSrc(1)->getInsn()->op == OP_NOP) {
+            delete_Instruction(prog, ldst);
+            continue;
+         }
          isLoad = false;
       } else {
          // TODO: maybe have all fixed ops act as barrier ?