Add mapping in MachineFunction from SSA regs to Register Classes. Also,
uncovered a bug where registers were not being put in a map if they were not
found...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4776 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/InstSelectSimple.cpp b/lib/Target/X86/InstSelectSimple.cpp
index f0ffc67..6ac3d0b 100644
--- a/lib/Target/X86/InstSelectSimple.cpp
+++ b/lib/Target/X86/InstSelectSimple.cpp
@@ -17,7 +17,11 @@
#include "llvm/Constants.h"
#include "llvm/Pass.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/InstVisitor.h"
+#include "llvm/Target/MRegisterInfo.h"
+#include <map>
using namespace MOTy; // Get Use, Def, UseAndDef
@@ -105,8 +109,14 @@
unsigned getReg(Value &V) { return getReg(&V); } // Allow references
unsigned getReg(Value *V) {
unsigned &Reg = RegMap[V];
- if (Reg == 0)
+ if (Reg == 0) {
Reg = CurReg++;
+ RegMap[V] = Reg;
+
+ // Add the mapping of regnumber => reg class to MachineFunction
+ F->addRegMap(Reg,
+ TM.getRegisterInfo()->getRegClassForType(V->getType()));
+ }
// If this operand is a constant, emit the code to copy the constant into
// the register here...