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For PR950:

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The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31931 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2006-11-27 01:05:10 +00:00
parent 5fed9b9044
commit 3da59db637
105 changed files with 6737 additions and 3700 deletions
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30
lib/Bytecode/Writer/Writer.cpp
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@ -291,7 +291,7 @@ void BytecodeWriter::outputConstant(const Constant *CPV) {
if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CPV)) {
// FIXME: Encoding of constant exprs could be much more compact!
assert(CE->getNumOperands() > 0 && "ConstantExpr with 0 operands");
assert(CE->getNumOperands() != 1 || CE->getOpcode() == Instruction::Cast);
assert(CE->getNumOperands() != 1 || CE->isCast());
output_vbr(1+CE->getNumOperands()); // flags as an expr
output_vbr(CE->getOpcode()); // Put out the CE op code
@ -446,8 +446,8 @@ void BytecodeWriter::outputInstructionFormat0(const Instruction *I,
output_typeid(Type); // Result type
unsigned NumArgs = I->getNumOperands();
output_vbr(NumArgs + (isa<CastInst>(I) ||
isa<VAArgInst>(I) || Opcode == 56 || Opcode == 58));
output_vbr(NumArgs + (isa<CastInst>(I) || isa<InvokeInst>(I) ||
isa<VAArgInst>(I) || Opcode == 58));
if (!isa<GetElementPtrInst>(&I)) {
for (unsigned i = 0; i < NumArgs; ++i) {
@ -460,7 +460,7 @@ void BytecodeWriter::outputInstructionFormat0(const Instruction *I,
int Slot = Table.getSlot(I->getType());
assert(Slot != -1 && "Cast return type unknown?");
output_typeid((unsigned)Slot);
} else if (Opcode == 56) { // Invoke escape sequence
} else if (isa<InvokeInst>(I)) {
output_vbr(cast<InvokeInst>(I)->getCallingConv());
} else if (Opcode == 58) { // Call escape sequence
output_vbr((cast<CallInst>(I)->getCallingConv() << 1) |
@ -528,8 +528,8 @@ void BytecodeWriter::outputInstrVarArgsCall(const Instruction *I,
// variable argument.
NumFixedOperands = 3+NumParams;
}
output_vbr(2 * I->getNumOperands()-NumFixedOperands +
unsigned(Opcode == 56 || Opcode == 58));
output_vbr(2 * I->getNumOperands()-NumFixedOperands +
unsigned(Opcode == 58 || isa<InvokeInst>(I)));
// The type for the function has already been emitted in the type field of the
// instruction. Just emit the slot # now.
@ -551,12 +551,12 @@ void BytecodeWriter::outputInstrVarArgsCall(const Instruction *I,
output_vbr((unsigned)Slot);
}
// If this is the escape sequence for call, emit the tailcall/cc info.
if (Opcode == 58) {
if (isa<InvokeInst>(I)) {
// Emit the tail call/calling conv for invoke instructions
output_vbr(cast<InvokeInst>(I)->getCallingConv());
} else if (Opcode == 58) {
const CallInst *CI = cast<CallInst>(I);
output_vbr((CI->getCallingConv() << 1) | unsigned(CI->isTailCall()));
} else if (Opcode == 56) { // Invoke escape sequence.
output_vbr(cast<InvokeInst>(I)->getCallingConv());
}
}
@ -619,7 +619,7 @@ inline void BytecodeWriter::outputInstructionFormat3(const Instruction *I,
}
void BytecodeWriter::outputInstruction(const Instruction &I) {
assert(I.getOpcode() < 56 && "Opcode too big???");
assert(I.getOpcode() < 57 && "Opcode too big???");
unsigned Opcode = I.getOpcode();
unsigned NumOperands = I.getNumOperands();
@ -639,12 +639,6 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
} else {
Opcode = 58; // Call escape sequence.
}
} else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
if (II->getCallingConv() == CallingConv::Fast)
Opcode = 57; // FastCC invoke.
else if (II->getCallingConv() != CallingConv::C)
Opcode = 56; // Invoke escape sequence.
} else if (isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) {
Opcode = 62;
} else if (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile()) {
@ -750,7 +744,7 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
if (Slots[NumOperands-1] > MaxOpSlot)
MaxOpSlot = Slots[NumOperands-1];
}
} else if (Opcode == 56) {
} else if (isa<InvokeInst>(I)) {
// Invoke escape seq has at least 4 operands to encode.
++NumOperands;
}