Vendor import of llvm-project main llvmorg-14-init-13186-g0c553cc1af2e.vendor/llvm-project/llvmorg-14-init-13186-g0c553cc1af2e

1 files changed, 52 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/MachineSSAContext.cpp b/llvm/lib/CodeGen/MachineSSAContext.cpp
new file mode 100644
index 000000000000..8db893535daf
--- /dev/null
+++ b/llvm/lib/CodeGen/MachineSSAContext.cpp
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+//===- MachineSSAContext.cpp ------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+/// \file
+///
+/// This file defines a specialization of the GenericSSAContext<X>
+/// template class for Machine IR.
+///
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/MachineSSAContext.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace llvm;
+
+MachineBasicBlock *MachineSSAContext::getEntryBlock(MachineFunction &F) {
+  return &F.front();
+}
+
+void MachineSSAContext::setFunction(MachineFunction &Fn) {
+  MF = &Fn;
+  RegInfo = &MF->getRegInfo();
+}
+
+Printable MachineSSAContext::print(MachineBasicBlock *Block) const {
+  return Printable([Block](raw_ostream &Out) { Block->printName(Out); });
+}
+
+Printable MachineSSAContext::print(MachineInstr *I) const {
+  return Printable([I](raw_ostream &Out) { I->print(Out); });
+}
+
+Printable MachineSSAContext::print(Register Value) const {
+  auto *MRI = RegInfo;
+  return Printable([MRI, Value](raw_ostream &Out) {
+    Out << printReg(Value, MRI->getTargetRegisterInfo(), 0, MRI);
+
+    if (Value) {
+      // Try to print the definition.
+      if (auto *Instr = MRI->getUniqueVRegDef(Value)) {
+        Out << ": ";
+        Instr->print(Out);
+      }
+    }
+  });
+}