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Basic FastISel support for floating-point constants.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55401 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-08-27 01:09:54 +00:00
parent 96c5ea878c
commit 10df0fa73e
4 changed files with 123 additions and 1 deletions
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34
include/llvm/CodeGen/FastISel.h
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@ -20,6 +20,7 @@
namespace llvm {
class ConstantFP;
class MachineBasicBlock;
class MachineFunction;
class MachineRegisterInfo;
@ -93,6 +94,15 @@ protected:
ISD::NodeType Opcode,
unsigned Op0, uint64_t Imm);
/// FastEmit_rf - This method is called by target-independent code
/// to request that an instruction with the given type, opcode, and
/// register and floating-point immediate operands be emitted.
///
virtual unsigned FastEmit_rf(MVT::SimpleValueType VT,
MVT::SimpleValueType RetVT,
ISD::NodeType Opcode,
unsigned Op0, ConstantFP *FPImm);
/// FastEmit_rri - This method is called by target-independent code
/// to request that an instruction with the given type, opcode, and
/// register and immediate operands be emitted.
@ -111,6 +121,15 @@ protected:
unsigned Op0, uint64_t Imm,
MVT::SimpleValueType ImmType);
/// FastEmit_rf_ - This method is a wrapper of FastEmit_rf. It first tries
/// to emit an instruction with an immediate operand using FastEmit_rf.
/// If that fails, it materializes the immediate into a register and try
/// FastEmit_rr instead.
unsigned FastEmit_rf_(MVT::SimpleValueType VT,
ISD::NodeType Opcode,
unsigned Op0, ConstantFP *FPImm,
MVT::SimpleValueType ImmType);
/// FastEmit_i - This method is called by target-independent code
/// to request that an instruction with the given type, opcode, and
/// immediate operand be emitted.
@ -119,6 +138,14 @@ protected:
ISD::NodeType Opcode,
uint64_t Imm);
/// FastEmit_f - This method is called by target-independent code
/// to request that an instruction with the given type, opcode, and
/// floating-point immediate operand be emitted.
virtual unsigned FastEmit_f(MVT::SimpleValueType VT,
MVT::SimpleValueType RetVT,
ISD::NodeType Opcode,
ConstantFP *FPImm);
/// FastEmitInst_ - Emit a MachineInstr with no operands and a
/// result register in the given register class.
///
@ -146,6 +173,13 @@ protected:
const TargetRegisterClass *RC,
unsigned Op0, uint64_t Imm);
/// FastEmitInst_rf - Emit a MachineInstr with two register operands
/// and a result register in the given register class.
///
unsigned FastEmitInst_rf(unsigned MachineInstOpcode,
const TargetRegisterClass *RC,
unsigned Op0, ConstantFP *FPImm);
/// FastEmitInst_rri - Emit a MachineInstr with two register operands,
/// an immediate, and a result register in the given register class.
///