From 3e6b1ce614f9b090876e52c6eae49baa91d20eef Mon Sep 17 00:00:00 2001 From: Reid Spencer Date: Sun, 3 Dec 2006 17:17:02 +0000 Subject: Support ICmp/FCmp constant expression reading and writing. llvm-svn: 32160 --- llvm/lib/Bytecode/Reader/Reader.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'llvm/lib/Bytecode/Reader/Reader.cpp') diff --git a/llvm/lib/Bytecode/Reader/Reader.cpp b/llvm/lib/Bytecode/Reader/Reader.cpp index d294e9e025e..9286279216e 100644 --- a/llvm/lib/Bytecode/Reader/Reader.cpp +++ b/llvm/lib/Bytecode/Reader/Reader.cpp @@ -701,6 +701,8 @@ void BytecodeReader::ParseInstruction(std::vector &Oprnds, } case Instruction::ICmp: case Instruction::FCmp: + if (Oprnds.size() != 3) + error("Cmp instructions requires 3 operands"); // These instructions encode the comparison predicate as the 3rd operand. Result = CmpInst::create(Instruction::OtherOps(Opcode), static_cast(Oprnds[2]), @@ -1351,6 +1353,16 @@ Value *BytecodeReader::ParseConstantPoolValue(unsigned TypeID) { ConstantExpr::getShuffleVector(ArgVec[0], ArgVec[1], ArgVec[2]); if (Handler) Handler->handleConstantExpression(Opcode, ArgVec, Result); 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]); + } 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]); } else { // All other 2-operand expressions Constant* Result = ConstantExpr::get(Opcode, ArgVec[0], ArgVec[1]); if (Handler) Handler->handleConstantExpression(Opcode, ArgVec, Result); -- cgit v1.2.3