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

src/xenia/cpu/hir/instr.cc

@@ -0,0 +1,120 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/cpu/hir/instr.h"
+
+#include "xenia/cpu/hir/block.h"
+
+namespace xe {
+namespace cpu {
+namespace hir {
+
+void Instr::set_src1(Value* value) {
+  if (src1.value == value) {
+    return;
+  }
+  if (src1_use) {
+    src1.value->RemoveUse(src1_use);
+  }
+  src1.value = value;
+  src1_use = value ? value->AddUse(block->arena, this) : NULL;
+}
+
+void Instr::set_src2(Value* value) {
+  if (src2.value == value) {
+    return;
+  }
+  if (src2_use) {
+    src2.value->RemoveUse(src2_use);
+  }
+  src2.value = value;
+  src2_use = value ? value->AddUse(block->arena, this) : NULL;
+}
+
+void Instr::set_src3(Value* value) {
+  if (src3.value == value) {
+    return;
+  }
+  if (src3_use) {
+    src3.value->RemoveUse(src3_use);
+  }
+  src3.value = value;
+  src3_use = value ? value->AddUse(block->arena, this) : NULL;
+}
+
+void Instr::MoveBefore(Instr* other) {
+  if (next == other) {
+    return;
+  }
+
+  // Remove from current location.
+  if (prev) {
+    prev->next = next;
+  } else {
+    block->instr_head = next;
+  }
+  if (next) {
+    next->prev = prev;
+  } else {
+    block->instr_tail = prev;
+  }
+
+  // Insert into new location.
+  block = other->block;
+  next = other;
+  prev = other->prev;
+  other->prev = this;
+  if (prev) {
+    prev->next = this;
+  }
+  if (other == block->instr_head) {
+    block->instr_head = this;
+  }
+}
+
+void Instr::Replace(const OpcodeInfo* opcode, uint16_t flags) {
+  this->opcode = opcode;
+  this->flags = flags;
+
+  if (src1_use) {
+    src1.value->RemoveUse(src1_use);
+    src1.value = NULL;
+    src1_use = NULL;
+  }
+  if (src2_use) {
+    src2.value->RemoveUse(src2_use);
+    src2.value = NULL;
+    src2_use = NULL;
+  }
+  if (src3_use) {
+    src3.value->RemoveUse(src3_use);
+    src3.value = NULL;
+    src3_use = NULL;
+  }
+}
+
+void Instr::Remove() {
+  // Remove all srcs/dest.
+  Replace(&OPCODE_NOP_info, 0);
+
+  if (prev) {
+    prev->next = next;
+  } else {
+    block->instr_head = next;
+  }
+  if (next) {
+    next->prev = prev;
+  } else {
+    block->instr_tail = prev;
+  }
+}
+
+}  // namespace hir
+}  // namespace cpu
+}  // namespace xe