Add special code to make printing SSA form machine instructions nicer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4446 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 961e568..5ec5c2a 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -266,17 +266,28 @@
}
void MachineInstr::print(std::ostream &OS, const TargetMachine &TM) {
- OS << TM.getInstrInfo().getName(getOpcode());
- for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
- OS << "\t";
- ::print(getOperand(i), OS, TM);
+ unsigned StartOp = 0;
+ // Specialize printing if op#0 is definition
+ if (getNumOperands() && operandIsDefined(0)) {
+ ::print(getOperand(0), OS, TM);
+ OS << " = ";
+ ++StartOp; // Don't print this operand again!
+ }
+ OS << TM.getInstrInfo().getName(getOpcode());
+
+ for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) {
+ if (i != StartOp)
+ OS << ",";
+ OS << " ";
+ ::print(getOperand(i), OS, TM);
+
if (operandIsDefinedAndUsed(i))
OS << "<def&use>";
else if (operandIsDefined(i))
OS << "<def>";
}
-
+
// code for printing implict references
if (getNumImplicitRefs()) {
OS << "\tImplicitRefs: ";