Value::MulHi and constant propagation for OPCODE_MUL_HI. Could maybe be reworked?

2015-05-13 16:13:06 -05:00
parent 9714018fbb
commit bb947c6819
3 changed files with 31 additions and 0 deletions
--- a/src/xenia/cpu/compiler/passes/constant_propagation_pass.cc
+++ b/src/xenia/cpu/compiler/passes/constant_propagation_pass.cc
@@ -354,6 +354,13 @@ bool ConstantPropagationPass::Run(HIRBuilder* builder) {
            i->Remove();
          }
          break;
+        case OPCODE_MUL_HI:
+          if (i->src1.value->IsConstant() && i->src2.value->IsConstant()) {
+            v->set_from(i->src1.value);
+            v->MulHi(i->src2.value, (i->flags & ARITHMETIC_UNSIGNED) != 0);
+            i->Remove();
+          }
+          break;
        case OPCODE_DIV:
          if (i->src1.value->IsConstant() && i->src2.value->IsConstant()) {
            v->set_from(i->src1.value);