Split the Add, Sub, and Mul instruction opcodes into separate

integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 26 insertions, 30 deletions

diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp
index 765fed248f..7dfeae0ab2 100644
--- a/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -64,45 +64,35 @@ void Interpreter::initializeExecutionEngine() {
      Dest.TY##Val = Src1.TY##Val OP Src2.TY##Val; \
      break
 
-#define IMPLEMENT_INTEGER_BINOP1(OP, TY) \
-   case Type::IntegerTyID: { \
-     Dest.IntVal = Src1.IntVal OP Src2.IntVal; \
-     break; \
-   }
-
-
-static void executeAddInst(GenericValue &Dest, GenericValue Src1, 
-                           GenericValue Src2, const Type *Ty) {
+static void executeFAddInst(GenericValue &Dest, GenericValue Src1,
+                            GenericValue Src2, const Type *Ty) {
   switch (Ty->getTypeID()) {
-    IMPLEMENT_INTEGER_BINOP1(+, Ty);
     IMPLEMENT_BINARY_OPERATOR(+, Float);
     IMPLEMENT_BINARY_OPERATOR(+, Double);
   default:
-    cerr << "Unhandled type for Add instruction: " << *Ty << "\n";
+    cerr << "Unhandled type for FAdd instruction: " << *Ty << "\n";
     abort();
   }
 }
 
-static void executeSubInst(GenericValue &Dest, GenericValue Src1, 
-                           GenericValue Src2, const Type *Ty) {
+static void executeFSubInst(GenericValue &Dest, GenericValue Src1,
+                            GenericValue Src2, const Type *Ty) {
   switch (Ty->getTypeID()) {
-    IMPLEMENT_INTEGER_BINOP1(-, Ty);
     IMPLEMENT_BINARY_OPERATOR(-, Float);
     IMPLEMENT_BINARY_OPERATOR(-, Double);
   default:
-    cerr << "Unhandled type for Sub instruction: " << *Ty << "\n";
+    cerr << "Unhandled type for FSub instruction: " << *Ty << "\n";
     abort();
   }
 }
 
-static void executeMulInst(GenericValue &Dest, GenericValue Src1, 
-                           GenericValue Src2, const Type *Ty) {
+static void executeFMulInst(GenericValue &Dest, GenericValue Src1,
+                            GenericValue Src2, const Type *Ty) {
   switch (Ty->getTypeID()) {
-    IMPLEMENT_INTEGER_BINOP1(*, Ty);
     IMPLEMENT_BINARY_OPERATOR(*, Float);
     IMPLEMENT_BINARY_OPERATOR(*, Double);
   default:
-    cerr << "Unhandled type for Mul instruction: " << *Ty << "\n";
+    cerr << "Unhandled type for FMul instruction: " << *Ty << "\n";
     abort();
   }
 }
@@ -550,11 +540,14 @@ void Interpreter::visitBinaryOperator(BinaryOperator &I) {
   GenericValue R;   // Result
 
   switch (I.getOpcode()) {
-  case Instruction::Add:   executeAddInst  (R, Src1, Src2, Ty); break;
-  case Instruction::Sub:   executeSubInst  (R, Src1, Src2, Ty); break;
-  case Instruction::Mul:   executeMulInst  (R, Src1, Src2, Ty); break;
-  case Instruction::FDiv:  executeFDivInst (R, Src1, Src2, Ty); break;
-  case Instruction::FRem:  executeFRemInst (R, Src1, Src2, Ty); break;
+  case Instruction::Add:   R.IntVal = Src1.IntVal + Src2.IntVal; break;
+  case Instruction::Sub:   R.IntVal = Src1.IntVal - Src2.IntVal; break;
+  case Instruction::Mul:   R.IntVal = Src1.IntVal * Src2.IntVal; break;
+  case Instruction::FAdd:  executeFAddInst(R, Src1, Src2, Ty); break;
+  case Instruction::FSub:  executeFSubInst(R, Src1, Src2, Ty); break;
+  case Instruction::FMul:  executeFMulInst(R, Src1, Src2, Ty); break;
+  case Instruction::FDiv:  executeFDivInst(R, Src1, Src2, Ty); break;
+  case Instruction::FRem:  executeFRemInst(R, Src1, Src2, Ty); break;
   case Instruction::UDiv:  R.IntVal = Src1.IntVal.udiv(Src2.IntVal); break;
   case Instruction::SDiv:  R.IntVal = Src1.IntVal.sdiv(Src2.IntVal); break;
   case Instruction::URem:  R.IntVal = Src1.IntVal.urem(Src2.IntVal); break;
@@ -1258,18 +1251,21 @@ GenericValue Interpreter::getConstantExprValue (ConstantExpr *CE,
   GenericValue Dest;
   const Type * Ty = CE->getOperand(0)->getType();
   switch (CE->getOpcode()) {
-  case Instruction::Add:  executeAddInst (Dest, Op0, Op1, Ty); break;
-  case Instruction::Sub:  executeSubInst (Dest, Op0, Op1, Ty); break;
-  case Instruction::Mul:  executeMulInst (Dest, Op0, Op1, Ty); break;
+  case Instruction::Add:  Dest.IntVal = Op0.IntVal + Op1.IntVal; break;
+  case Instruction::Sub:  Dest.IntVal = Op0.IntVal - Op1.IntVal; break;
+  case Instruction::Mul:  Dest.IntVal = Op0.IntVal * Op1.IntVal; break;
+  case Instruction::FAdd: executeFAddInst(Dest, Op0, Op1, Ty); break;
+  case Instruction::FSub: executeFSubInst(Dest, Op0, Op1, Ty); break;
+  case Instruction::FMul: executeFMulInst(Dest, Op0, Op1, Ty); break;
   case Instruction::FDiv: executeFDivInst(Dest, Op0, Op1, Ty); break;
   case Instruction::FRem: executeFRemInst(Dest, Op0, Op1, Ty); break;
   case Instruction::SDiv: Dest.IntVal = Op0.IntVal.sdiv(Op1.IntVal); break;
   case Instruction::UDiv: Dest.IntVal = Op0.IntVal.udiv(Op1.IntVal); break;
   case Instruction::URem: Dest.IntVal = Op0.IntVal.urem(Op1.IntVal); break;
   case Instruction::SRem: Dest.IntVal = Op0.IntVal.srem(Op1.IntVal); break;
-  case Instruction::And:  Dest.IntVal = Op0.IntVal.And(Op1.IntVal); break;
-  case Instruction::Or:   Dest.IntVal = Op0.IntVal.Or(Op1.IntVal); break;
-  case Instruction::Xor:  Dest.IntVal = Op0.IntVal.Xor(Op1.IntVal); break;
+  case Instruction::And:  Dest.IntVal = Op0.IntVal & Op1.IntVal; break;
+  case Instruction::Or:   Dest.IntVal = Op0.IntVal | Op1.IntVal; break;
+  case Instruction::Xor:  Dest.IntVal = Op0.IntVal ^ Op1.IntVal; break;
   case Instruction::Shl:  
     Dest.IntVal = Op0.IntVal.shl(Op1.IntVal.getZExtValue());
     break;