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For PR950: Implement read/write of ICmp and FCmp constant expressions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32172 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2006-12-04 05:23:49 +00:00
parent 763ed5e4ac
commit 595b477915
2 changed files with 12 additions and 6 deletions
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16
lib/Bytecode/Reader/Reader.cpp
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@ -1355,14 +1355,18 @@ Value *BytecodeReader::ParseConstantPoolValue(unsigned TypeID) {
return Result;
} else if (Opcode == Instruction::ICmp) {
if (ArgVec.size() != 2)
error("Invalid ICmp constant expr arguments");
unsigned short pred = read_vbr_uint();
return ConstantExpr::getICmp(pred, ArgVec[0], ArgVec[1]);
error("Invalid ICmp constant expr arguments.");
unsigned predicate = read_vbr_uint();
Constant *Result = ConstantExpr::getICmp(predicate, ArgVec[0], ArgVec[1]);
if (Handler) Handler->handleConstantExpression(Opcode, ArgVec, Result);
return Result;
} else if (Opcode == Instruction::FCmp) {
if (ArgVec.size() != 2)
error("Invalid FCmp constant expr arguments");
unsigned short pred = read_vbr_uint();
return ConstantExpr::getFCmp(pred, ArgVec[0], ArgVec[1]);
error("Invalid FCmp constant expr arguments.");
unsigned predicate = read_vbr_uint();
Constant *Result = ConstantExpr::getFCmp(predicate, ArgVec[0], ArgVec[1]);
if (Handler) Handler->handleConstantExpression(Opcode, ArgVec, Result);
return Result;
} else { // All other 2-operand expressions
Constant* Result = ConstantExpr::get(Opcode, ArgVec[0], ArgVec[1]);
if (Handler) Handler->handleConstantExpression(Opcode, ArgVec, Result);

2
lib/Bytecode/Writer/Writer.cpp
View File

@ -303,6 +303,8 @@ void BytecodeWriter::outputConstant(const Constant *CPV) {
Slot = Table.getSlot((*OI)->getType());
output_typeid((unsigned)Slot);
}
if (CE->isCompare())
output_vbr((unsigned)CE->getPredicate());
return;
} else if (isa<UndefValue>(CPV)) {
output_vbr(1U); // 1 -> UndefValue constant.