Initial checkin of codegen infrastructure for LLVM-JIT

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4282 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/CodeGen/MInstruction.cpp b/lib/CodeGen/MInstruction.cpp
new file mode 100644
index 0000000000..d6740e5212
--- /dev/null
+++ b/lib/CodeGen/MInstruction.cpp
@@ -0,0 +1,31 @@
+//===-- MInstruction.cpp - Implementation code for the MInstruction class -===//
+//
+// This file contains a printer that converts from our internal representation
+// of LLVM code to a nice human readable form that is suitable for debuggging.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/MBasicBlock.h"
+
+/// MInstruction ctor - Create a new instruction, and append it to the
+/// specified basic block.
+///
+MInstruction::MInstruction(MBasicBlock *BB, unsigned O, unsigned D)
+  : Opcode(O), Dest(D) {
+  // Add this instruction to the specified basic block
+  BB->getInstList().push_back(this);
+}
+
+
+/// addOperand - Add a new operand to the instruction with the specified value
+/// and interpretation.
+///
+void MInstruction::addOperand(unsigned Value, MOperand::Interpretation Ty) {
+  if (Operands.size() < 4) {
+    OperandInterpretation[Operands.size()] = Ty;  // Save interpretation
+  } else {
+    assert(Ty == MOperand::Register &&
+           "Trying to add 5th operand that is not a register to MInstruction!");
+  }
+  Operands.push_back(Value);
+}