Add constant folding for OPCODE_ROTATE_LEFT

2019-08-03 13:26:54 -07:00
parent 3ad80810b5
commit 3675b3860a
3 changed files with 32 additions and 1 deletions
--- a/src/xenia/cpu/compiler/passes/constant_propagation_pass.cc
+++ b/src/xenia/cpu/compiler/passes/constant_propagation_pass.cc
@@ -712,7 +712,14 @@ bool ConstantPropagationPass::Run(HIRBuilder* builder, bool& result) {
            result = true;
          }
          break;
-        // TODO(benvanik): ROTATE_LEFT
+        case OPCODE_ROTATE_LEFT:
+          if (i->src1.value->IsConstant() && i->src2.value->IsConstant()) {
+            v->set_from(i->src1.value);
+            v->RotateLeft(i->src2.value);
+            i->Remove();
+            result = true;
+          }
+          break;
        case OPCODE_BYTE_SWAP:
          if (i->src1.value->IsConstant()) {
            v->set_from(i->src1.value);