Moving alloy/ into xenia/cpu/ to start simplifying things.

src/xenia/cpu/compiler/passes/finalization_pass.cc

@@ -0,0 +1,74 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/cpu/compiler/passes/finalization_pass.h"
+
+#include "xenia/cpu/backend/backend.h"
+#include "xenia/cpu/compiler/compiler.h"
+#include "xenia/cpu/runtime/runtime.h"
+#include "xenia/profiling.h"
+
+namespace xe {
+namespace cpu {
+namespace compiler {
+namespace passes {
+
+// TODO(benvanik): remove when enums redefined.
+using namespace xe::cpu::hir;
+
+using xe::cpu::hir::HIRBuilder;
+
+FinalizationPass::FinalizationPass() : CompilerPass() {}
+
+FinalizationPass::~FinalizationPass() {}
+
+int FinalizationPass::Run(HIRBuilder* builder) {
+  // Process the HIR and prepare it for lowering.
+  // After this is done the HIR should be ready for emitting.
+
+  auto arena = builder->arena();
+
+  uint32_t block_ordinal = 0;
+  auto block = builder->first_block();
+  while (block) {
+    block->ordinal = block_ordinal++;
+
+    // Ensure all labels have names.
+    auto label = block->label_head;
+    while (label) {
+      if (!label->name) {
+        const size_t label_len = 6 + 4 + 1;
+        char* name = (char*)arena->Alloc(label_len);
+        snprintf(name, label_len, "_label%d", label->id);
+        label->name = name;
+      }
+      label = label->next;
+    }
+
+    // Remove unneeded jumps.
+    auto tail = block->instr_tail;
+    if (tail && tail->opcode == &OPCODE_BRANCH_info) {
+      // Jump. Check target.
+      auto target = tail->src1.label;
+      if (target->block == block->next) {
+        // Jumping to subsequent block. Remove.
+        tail->Remove();
+      }
+    }
+
+    block = block->next;
+  }
+
+  return 0;
+}
+
+}  // namespace passes
+}  // namespace compiler
+}  // namespace cpu
+}  // namespace xe