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Convert some of the dynamic opcode lookups into static ones.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93693 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2010-01-17 19:33:27 +00:00
parent 0bd58b0e81
commit a81e241fcc
1 changed files with 40 additions and 59 deletions
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99
lib/Transforms/Scalar/GVN.cpp
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@ -70,18 +70,44 @@ static cl::opt<bool> EnableLoadPRE("enable-load-pre", cl::init(true));
/// two values.
namespace {
struct Expression {
enum ExpressionOpcode { ADD, FADD, SUB, FSUB, MUL, FMUL,
UDIV, SDIV, FDIV, UREM, SREM,
FREM, SHL, LSHR, ASHR, AND, OR, XOR, ICMPEQ,
ICMPNE, ICMPUGT, ICMPUGE, ICMPULT, ICMPULE,
ICMPSGT, ICMPSGE, ICMPSLT, ICMPSLE, FCMPOEQ,
FCMPOGT, FCMPOGE, FCMPOLT, FCMPOLE, FCMPONE,
FCMPORD, FCMPUNO, FCMPUEQ, FCMPUGT, FCMPUGE,
FCMPULT, FCMPULE, FCMPUNE, EXTRACT, INSERT,
SHUFFLE, SELECT, TRUNC, ZEXT, SEXT, FPTOUI,
FPTOSI, UITOFP, SITOFP, FPTRUNC, FPEXT,
PTRTOINT, INTTOPTR, BITCAST, GEP, CALL, CONSTANT,
INSERTVALUE, EXTRACTVALUE, EMPTY, TOMBSTONE };
enum ExpressionOpcode {
ADD = Instruction::Add,
FADD = Instruction::FAdd,
SUB = Instruction::Sub,
FSUB = Instruction::FSub,
MUL = Instruction::Mul,
FMUL = Instruction::FMul,
UDIV = Instruction::UDiv,
SDIV = Instruction::SDiv,
FDIV = Instruction::FDiv,
UREM = Instruction::URem,
SREM = Instruction::SRem,
FREM = Instruction::FRem,
SHL = Instruction::Shl,
LSHR = Instruction::LShr,
ASHR = Instruction::AShr,
AND = Instruction::And,
OR = Instruction::Or,
XOR = Instruction::Xor,
TRUNC = Instruction::Trunc,
ZEXT = Instruction::ZExt,
SEXT = Instruction::SExt,
FPTOUI = Instruction::FPToUI,
FPTOSI = Instruction::FPToSI,
UITOFP = Instruction::UIToFP,
SITOFP = Instruction::SIToFP,
FPTRUNC = Instruction::FPTrunc,
FPEXT = Instruction::FPExt,
PTRTOINT = Instruction::PtrToInt,
INTTOPTR = Instruction::IntToPtr,
BITCAST = Instruction::BitCast,
ICMPEQ, ICMPNE, ICMPUGT, ICMPUGE, ICMPULT, ICMPULE,
ICMPSGT, ICMPSGE, ICMPSLT, ICMPSLE, FCMPOEQ,
FCMPOGT, FCMPOGE, FCMPOLT, FCMPOLE, FCMPONE,
FCMPORD, FCMPUNO, FCMPUEQ, FCMPUGT, FCMPUGE,
FCMPULT, FCMPULE, FCMPUNE, EXTRACT, INSERT,
SHUFFLE, SELECT, GEP, CALL, CONSTANT,
INSERTVALUE, EXTRACTVALUE, EMPTY, TOMBSTONE };
ExpressionOpcode opcode;
const Type* type;
@ -127,9 +153,7 @@ namespace {
uint32_t nextValueNumber;
Expression::ExpressionOpcode getOpcode(BinaryOperator* BO);
Expression::ExpressionOpcode getOpcode(CmpInst* C);
Expression::ExpressionOpcode getOpcode(CastInst* C);
Expression create_expression(BinaryOperator* BO);
Expression create_expression(CmpInst* C);
Expression create_expression(ShuffleVectorInst* V);
@ -200,30 +224,6 @@ struct isPodLike<Expression> { static const bool value = true; };
//===----------------------------------------------------------------------===//
// ValueTable Internal Functions
//===----------------------------------------------------------------------===//
Expression::ExpressionOpcode ValueTable::getOpcode(BinaryOperator* BO) {
switch(BO->getOpcode()) {
default: // THIS SHOULD NEVER HAPPEN
llvm_unreachable("Binary operator with unknown opcode?");
case Instruction::Add: return Expression::ADD;
case Instruction::FAdd: return Expression::FADD;
case Instruction::Sub: return Expression::SUB;
case Instruction::FSub: return Expression::FSUB;
case Instruction::Mul: return Expression::MUL;
case Instruction::FMul: return Expression::FMUL;
case Instruction::UDiv: return Expression::UDIV;
case Instruction::SDiv: return Expression::SDIV;
case Instruction::FDiv: return Expression::FDIV;
case Instruction::URem: return Expression::UREM;
case Instruction::SRem: return Expression::SREM;
case Instruction::FRem: return Expression::FREM;
case Instruction::Shl: return Expression::SHL;
case Instruction::LShr: return Expression::LSHR;
case Instruction::AShr: return Expression::ASHR;
case Instruction::And: return Expression::AND;
case Instruction::Or: return Expression::OR;
case Instruction::Xor: return Expression::XOR;
}
}
Expression::ExpressionOpcode ValueTable::getOpcode(CmpInst* C) {
if (isa<ICmpInst>(C)) {
@ -263,25 +263,6 @@ Expression::ExpressionOpcode ValueTable::getOpcode(CmpInst* C) {
}
}
Expression::ExpressionOpcode ValueTable::getOpcode(CastInst* C) {
switch(C->getOpcode()) {
default: // THIS SHOULD NEVER HAPPEN
llvm_unreachable("Cast operator with unknown opcode?");
case Instruction::Trunc: return Expression::TRUNC;
case Instruction::ZExt: return Expression::ZEXT;
case Instruction::SExt: return Expression::SEXT;
case Instruction::FPToUI: return Expression::FPTOUI;
case Instruction::FPToSI: return Expression::FPTOSI;
case Instruction::UIToFP: return Expression::UITOFP;
case Instruction::SIToFP: return Expression::SITOFP;
case Instruction::FPTrunc: return Expression::FPTRUNC;
case Instruction::FPExt: return Expression::FPEXT;
case Instruction::PtrToInt: return Expression::PTRTOINT;
case Instruction::IntToPtr: return Expression::INTTOPTR;
case Instruction::BitCast: return Expression::BITCAST;
}
}
Expression ValueTable::create_expression(CallInst* C) {
Expression e;
@ -302,7 +283,7 @@ Expression ValueTable::create_expression(BinaryOperator* BO) {
e.varargs.push_back(lookup_or_add(BO->getOperand(1)));
e.function = 0;
e.type = BO->getType();
e.opcode = getOpcode(BO);
e.opcode = static_cast<Expression::ExpressionOpcode>(BO->getOpcode());
return e;
}
@ -325,7 +306,7 @@ Expression ValueTable::create_expression(CastInst* C) {
e.varargs.push_back(lookup_or_add(C->getOperand(0)));
e.function = 0;
e.type = C->getType();
e.opcode = getOpcode(C);
e.opcode = static_cast<Expression::ExpressionOpcode>(C->getOpcode());
return e;
}