mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 15:11:24 +00:00
4cae74bd74
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144019 91177308-0d34-0410-b5e6-96231b3b80d8
344 lines
14 KiB
TableGen
344 lines
14 KiB
TableGen
//===- MipsInstrFPU.td - Mips FPU Instruction Information --*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file describes the Mips FPU instruction set.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Floating Point Instructions
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// ------------------------
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// * 64bit fp:
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// - 32 64-bit registers (default mode)
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// - 16 even 32-bit registers (32-bit compatible mode) for
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// single and double access.
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// * 32bit fp:
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// - 16 even 32-bit registers - single and double (aliased)
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// - 32 32-bit registers (within single-only mode)
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//===----------------------------------------------------------------------===//
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// Floating Point Compare and Branch
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def SDT_MipsFPBrcond : SDTypeProfile<0, 2, [SDTCisInt<0>,
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SDTCisVT<1, OtherVT>]>;
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def SDT_MipsFPCmp : SDTypeProfile<0, 3, [SDTCisSameAs<0, 1>, SDTCisFP<1>,
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SDTCisVT<2, i32>]>;
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def SDT_MipsCMovFP : SDTypeProfile<1, 2, [SDTCisSameAs<0, 1>,
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SDTCisSameAs<1, 2>]>;
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def SDT_MipsBuildPairF64 : SDTypeProfile<1, 2, [SDTCisVT<0, f64>,
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SDTCisVT<1, i32>,
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SDTCisSameAs<1, 2>]>;
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def SDT_MipsExtractElementF64 : SDTypeProfile<1, 2, [SDTCisVT<0, i32>,
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SDTCisVT<1, f64>,
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SDTCisVT<2, i32>]>;
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def MipsFPCmp : SDNode<"MipsISD::FPCmp", SDT_MipsFPCmp, [SDNPOutGlue]>;
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def MipsCMovFP_T : SDNode<"MipsISD::CMovFP_T", SDT_MipsCMovFP, [SDNPInGlue]>;
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def MipsCMovFP_F : SDNode<"MipsISD::CMovFP_F", SDT_MipsCMovFP, [SDNPInGlue]>;
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def MipsFPBrcond : SDNode<"MipsISD::FPBrcond", SDT_MipsFPBrcond,
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[SDNPHasChain, SDNPOptInGlue]>;
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def MipsBuildPairF64 : SDNode<"MipsISD::BuildPairF64", SDT_MipsBuildPairF64>;
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def MipsExtractElementF64 : SDNode<"MipsISD::ExtractElementF64",
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SDT_MipsExtractElementF64>;
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// Operand for printing out a condition code.
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let PrintMethod = "printFCCOperand" in
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def condcode : Operand<i32>;
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//===----------------------------------------------------------------------===//
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// Feature predicates.
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//===----------------------------------------------------------------------===//
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def IsFP64bit : Predicate<"Subtarget.isFP64bit()">;
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def NotFP64bit : Predicate<"!Subtarget.isFP64bit()">;
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def IsSingleFloat : Predicate<"Subtarget.isSingleFloat()">;
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def IsNotSingleFloat : Predicate<"!Subtarget.isSingleFloat()">;
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//===----------------------------------------------------------------------===//
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// Instruction Class Templates
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//
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// A set of multiclasses is used to address the register usage.
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//
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// S32 - single precision in 16 32bit even fp registers
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// single precision in 32 32bit fp registers in SingleOnly mode
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// S64 - single precision in 32 64bit fp registers (In64BitMode)
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// D32 - double precision in 16 32bit even fp registers
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// D64 - double precision in 32 64bit fp registers (In64BitMode)
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//
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// Only S32 and D32 are supported right now.
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//===----------------------------------------------------------------------===//
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// FP load.
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class FPLoad<bits<6> op, string opstr, PatFrag FOp, RegisterClass RC,
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Operand MemOpnd>:
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FMem<op, (outs RC:$ft), (ins MemOpnd:$addr),
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!strconcat(opstr, "\t$ft, $addr"), [(set RC:$ft, (FOp addr:$addr))],
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IILoad>;
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// FP store.
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class FPStore<bits<6> op, string opstr, PatFrag FOp, RegisterClass RC,
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Operand MemOpnd>:
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FMem<op, (outs), (ins RC:$ft, MemOpnd:$addr),
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!strconcat(opstr, "\t$ft, $addr"), [(store RC:$ft, addr:$addr)],
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IIStore>;
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// Instructions that convert an FP value to 32-bit fixed point.
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multiclass FFR1_W_M<bits<6> funct, string opstr> {
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def _S : FFR1<funct, 16, opstr, "w.s", FGR32, FGR32>;
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def _D32 : FFR1<funct, 17, opstr, "w.d", FGR32, AFGR64>,
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Requires<[NotFP64bit]>;
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def _D64 : FFR1<funct, 17, opstr, "w.d", FGR32, FGR64>,
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Requires<[IsFP64bit]>;
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}
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// Instructions that convert an FP value to 64-bit fixed point.
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let Predicates = [IsFP64bit] in
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multiclass FFR1_L_M<bits<6> funct, string opstr> {
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def _S : FFR1<funct, 16, opstr, "l.s", FGR64, FGR32>;
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def _D64 : FFR1<funct, 17, opstr, "l.d", FGR64, FGR64>;
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}
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// FP-to-FP conversion instructions.
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multiclass FFR1P_M<bits<6> funct, string opstr, SDNode OpNode> {
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def _S : FFR1P<funct, 16, opstr, "s", FGR32, FGR32, OpNode>;
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def _D32 : FFR1P<funct, 17, opstr, "d", AFGR64, AFGR64, OpNode>,
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Requires<[NotFP64bit]>;
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def _D64 : FFR1P<funct, 17, opstr, "d", FGR64, FGR64, OpNode>,
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Requires<[IsFP64bit]>;
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}
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multiclass FFR2P_M<bits<6> funct, string opstr, SDNode OpNode, bit isComm = 0> {
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let isCommutable = isComm in {
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def _S : FFR2P<funct, 16, opstr, "s", FGR32, OpNode>;
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def _D32 : FFR2P<funct, 17, opstr, "d", AFGR64, OpNode>,
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Requires<[NotFP64bit]>;
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def _D64 : FFR2P<funct, 17, opstr, "d", FGR64, OpNode>,
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Requires<[IsFP64bit]>;
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}
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}
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//===----------------------------------------------------------------------===//
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// Floating Point Instructions
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//===----------------------------------------------------------------------===//
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defm ROUND_W : FFR1_W_M<0xc, "round">;
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defm ROUND_L : FFR1_L_M<0x8, "round">;
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defm TRUNC_W : FFR1_W_M<0xd, "trunc">;
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defm TRUNC_L : FFR1_L_M<0x9, "trunc">;
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defm CEIL_W : FFR1_W_M<0xe, "ceil">;
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defm CEIL_L : FFR1_L_M<0xa, "ceil">;
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defm FLOOR_W : FFR1_W_M<0xf, "floor">;
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defm FLOOR_L : FFR1_L_M<0xb, "floor">;
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defm CVT_W : FFR1_W_M<0x24, "cvt">;
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defm CVT_L : FFR1_L_M<0x25, "cvt">;
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def CVT_S_W : FFR1<0x20, 20, "cvt", "s.w", FGR32, FGR32>;
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let Predicates = [NotFP64bit] in {
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def CVT_S_D32 : FFR1<0x20, 17, "cvt", "s.d", FGR32, AFGR64>;
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def CVT_D32_W : FFR1<0x21, 20, "cvt", "d.w", AFGR64, FGR32>;
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def CVT_D32_S : FFR1<0x21, 16, "cvt", "d.s", AFGR64, FGR32>;
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}
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let Predicates = [IsFP64bit] in {
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def CVT_S_D64 : FFR1<0x20, 17, "cvt", "s.d", FGR32, FGR64>;
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def CVT_S_L : FFR1<0x20, 21, "cvt", "s.l", FGR32, FGR64>;
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def CVT_D64_W : FFR1<0x21, 20, "cvt", "d.w", FGR64, FGR32>;
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def CVT_D64_S : FFR1<0x21, 16, "cvt", "d.s", FGR64, FGR32>;
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def CVT_D64_L : FFR1<0x21, 21, "cvt", "d.l", FGR64, FGR64>;
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}
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defm FABS : FFR1P_M<0x5, "abs", fabs>;
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defm FNEG : FFR1P_M<0x7, "neg", fneg>;
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defm FSQRT : FFR1P_M<0x4, "sqrt", fsqrt>;
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// The odd-numbered registers are only referenced when doing loads,
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// stores, and moves between floating-point and integer registers.
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// When defining instructions, we reference all 32-bit registers,
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// regardless of register aliasing.
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class FFRGPR<bits<5> _fmt, dag outs, dag ins, string asmstr, list<dag> pattern>:
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FFR<0x11, 0x0, _fmt, outs, ins, asmstr, pattern> {
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bits<5> rt;
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let ft = rt;
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let fd = 0;
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}
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/// Move Control Registers From/To CPU Registers
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def CFC1 : FFRGPR<0x2, (outs CPURegs:$rt), (ins CCR:$fs),
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"cfc1\t$rt, $fs", []>;
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def CTC1 : FFRGPR<0x6, (outs CCR:$fs), (ins CPURegs:$rt),
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"ctc1\t$rt, $fs", []>;
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def MFC1 : FFRGPR<0x00, (outs CPURegs:$rt), (ins FGR32:$fs),
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"mfc1\t$rt, $fs",
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[(set CPURegs:$rt, (bitconvert FGR32:$fs))]>;
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def MTC1 : FFRGPR<0x04, (outs FGR32:$fs), (ins CPURegs:$rt),
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"mtc1\t$rt, $fs",
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[(set FGR32:$fs, (bitconvert CPURegs:$rt))]>;
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def DMFC1 : FFRGPR<0x01, (outs CPU64Regs:$rt), (ins FGR64:$fs),
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"dmfc1\t$rt, $fs",
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[(set CPU64Regs:$rt, (bitconvert FGR64:$fs))]>;
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def DMTC1 : FFRGPR<0x05, (outs FGR64:$fs), (ins CPU64Regs:$rt),
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"dmtc1\t$rt, $fs",
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[(set FGR64:$fs, (bitconvert CPU64Regs:$rt))]>;
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def FMOV_S : FFR1<0x6, 16, "mov", "s", FGR32, FGR32>;
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def FMOV_D32 : FFR1<0x6, 17, "mov", "d", AFGR64, AFGR64>,
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Requires<[NotFP64bit]>;
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def FMOV_D64 : FFR1<0x6, 17, "mov", "d", FGR64, FGR64>,
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Requires<[IsFP64bit]>;
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/// Floating Point Memory Instructions
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let Predicates = [IsN64] in {
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def LWC1_P8 : FPLoad<0x31, "lwc1", load, FGR32, mem64>;
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def SWC1_P8 : FPStore<0x39, "swc1", store, FGR32, mem64>;
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def LDC164_P8 : FPLoad<0x35, "ldc1", load, FGR64, mem64>;
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def SDC164_P8 : FPStore<0x3d, "sdc1", store, FGR64, mem64>;
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}
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let Predicates = [NotN64] in {
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def LWC1 : FPLoad<0x31, "lwc1", load, FGR32, mem>;
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def SWC1 : FPStore<0x39, "swc1", store, FGR32, mem>;
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let Predicates = [HasMips64] in {
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def LDC164 : FPLoad<0x35, "ldc1", load, FGR64, mem>;
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def SDC164 : FPStore<0x3d, "sdc1", store, FGR64, mem>;
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}
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let Predicates = [NotMips64] in {
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def LDC1 : FPLoad<0x35, "ldc1", load, AFGR64, mem>;
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def SDC1 : FPStore<0x3d, "sdc1", store, AFGR64, mem>;
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}
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}
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/// Floating-point Aritmetic
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defm FADD : FFR2P_M<0x00, "add", fadd, 1>;
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defm FDIV : FFR2P_M<0x03, "div", fdiv>;
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defm FMUL : FFR2P_M<0x02, "mul", fmul, 1>;
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defm FSUB : FFR2P_M<0x01, "sub", fsub>;
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//===----------------------------------------------------------------------===//
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// Floating Point Branch Codes
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//===----------------------------------------------------------------------===//
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// Mips branch codes. These correspond to condcode in MipsInstrInfo.h.
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// They must be kept in synch.
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def MIPS_BRANCH_F : PatLeaf<(i32 0)>;
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def MIPS_BRANCH_T : PatLeaf<(i32 1)>;
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/// Floating Point Branch of False/True (Likely)
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let isBranch=1, isTerminator=1, hasDelaySlot=1, base=0x8, Uses=[FCR31] in
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class FBRANCH<bits<1> nd, bits<1> tf, PatLeaf op, string asmstr> :
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FFI<0x11, (outs), (ins brtarget:$dst), !strconcat(asmstr, "\t$dst"),
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[(MipsFPBrcond op, bb:$dst)]> {
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let Inst{20-18} = 0;
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let Inst{17} = nd;
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let Inst{16} = tf;
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}
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def BC1F : FBRANCH<0, 0, MIPS_BRANCH_F, "bc1f">;
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def BC1T : FBRANCH<0, 1, MIPS_BRANCH_T, "bc1t">;
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//===----------------------------------------------------------------------===//
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// Floating Point Flag Conditions
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//===----------------------------------------------------------------------===//
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// Mips condition codes. They must correspond to condcode in MipsInstrInfo.h.
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// They must be kept in synch.
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def MIPS_FCOND_F : PatLeaf<(i32 0)>;
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def MIPS_FCOND_UN : PatLeaf<(i32 1)>;
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def MIPS_FCOND_OEQ : PatLeaf<(i32 2)>;
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def MIPS_FCOND_UEQ : PatLeaf<(i32 3)>;
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def MIPS_FCOND_OLT : PatLeaf<(i32 4)>;
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def MIPS_FCOND_ULT : PatLeaf<(i32 5)>;
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def MIPS_FCOND_OLE : PatLeaf<(i32 6)>;
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def MIPS_FCOND_ULE : PatLeaf<(i32 7)>;
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def MIPS_FCOND_SF : PatLeaf<(i32 8)>;
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def MIPS_FCOND_NGLE : PatLeaf<(i32 9)>;
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def MIPS_FCOND_SEQ : PatLeaf<(i32 10)>;
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def MIPS_FCOND_NGL : PatLeaf<(i32 11)>;
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def MIPS_FCOND_LT : PatLeaf<(i32 12)>;
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def MIPS_FCOND_NGE : PatLeaf<(i32 13)>;
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def MIPS_FCOND_LE : PatLeaf<(i32 14)>;
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def MIPS_FCOND_NGT : PatLeaf<(i32 15)>;
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class FCMP<bits<5> fmt, RegisterClass RC, string typestr> :
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FCC<fmt, (outs), (ins RC:$fs, RC:$ft, condcode:$cc),
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!strconcat("c.$cc.", typestr, "\t$fs, $ft"),
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[(MipsFPCmp RC:$fs, RC:$ft, imm:$cc)]>;
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/// Floating Point Compare
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let Defs=[FCR31] in {
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def FCMP_S32 : FCMP<0x10, FGR32, "s">;
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def FCMP_D32 : FCMP<0x11, AFGR64, "d">, Requires<[NotFP64bit]>;
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def FCMP_D64 : FCMP<0x11, FGR64, "d">, Requires<[IsFP64bit]>;
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}
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//===----------------------------------------------------------------------===//
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// Floating Point Pseudo-Instructions
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//===----------------------------------------------------------------------===//
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def MOVCCRToCCR : MipsPseudo<(outs CCR:$dst), (ins CCR:$src),
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"# MOVCCRToCCR", []>;
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// This pseudo instr gets expanded into 2 mtc1 instrs after register
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// allocation.
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def BuildPairF64 :
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MipsPseudo<(outs AFGR64:$dst),
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(ins CPURegs:$lo, CPURegs:$hi), "",
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[(set AFGR64:$dst, (MipsBuildPairF64 CPURegs:$lo, CPURegs:$hi))]>;
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// This pseudo instr gets expanded into 2 mfc1 instrs after register
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// allocation.
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// if n is 0, lower part of src is extracted.
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// if n is 1, higher part of src is extracted.
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def ExtractElementF64 :
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MipsPseudo<(outs CPURegs:$dst),
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(ins AFGR64:$src, i32imm:$n), "",
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[(set CPURegs:$dst,
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(MipsExtractElementF64 AFGR64:$src, imm:$n))]>;
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//===----------------------------------------------------------------------===//
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// Floating Point Patterns
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//===----------------------------------------------------------------------===//
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def fpimm0 : PatLeaf<(fpimm), [{
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return N->isExactlyValue(+0.0);
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}]>;
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def fpimm0neg : PatLeaf<(fpimm), [{
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return N->isExactlyValue(-0.0);
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}]>;
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def : Pat<(f32 fpimm0), (MTC1 ZERO)>;
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def : Pat<(f32 fpimm0neg), (FNEG_S (MTC1 ZERO))>;
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def : Pat<(f32 (sint_to_fp CPURegs:$src)), (CVT_S_W (MTC1 CPURegs:$src))>;
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def : Pat<(i32 (fp_to_sint FGR32:$src)), (MFC1 (TRUNC_W_S FGR32:$src))>;
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let Predicates = [NotFP64bit] in {
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def : Pat<(f64 (sint_to_fp CPURegs:$src)), (CVT_D32_W (MTC1 CPURegs:$src))>;
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def : Pat<(i32 (fp_to_sint AFGR64:$src)), (MFC1 (TRUNC_W_D32 AFGR64:$src))>;
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def : Pat<(f32 (fround AFGR64:$src)), (CVT_S_D32 AFGR64:$src)>;
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def : Pat<(f64 (fextend FGR32:$src)), (CVT_D32_S FGR32:$src)>;
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}
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let Predicates = [IsFP64bit] in {
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def : Pat<(f64 fpimm0), (DMTC1 ZERO_64)>;
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def : Pat<(f64 fpimm0neg), (FNEG_D64 (DMTC1 ZERO_64))>;
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def : Pat<(f64 (sint_to_fp CPURegs:$src)), (CVT_D64_W (MTC1 CPURegs:$src))>;
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def : Pat<(f32 (sint_to_fp CPU64Regs:$src)),
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(CVT_S_L (DMTC1 CPU64Regs:$src))>;
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def : Pat<(f64 (sint_to_fp CPU64Regs:$src)),
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(CVT_D64_L (DMTC1 CPU64Regs:$src))>;
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def : Pat<(i32 (fp_to_sint FGR64:$src)), (MFC1 (TRUNC_W_D64 FGR64:$src))>;
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def : Pat<(i64 (fp_to_sint FGR64:$src)), (DMFC1 (TRUNC_L_D64 FGR64:$src))>;
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def : Pat<(f32 (fround FGR64:$src)), (CVT_S_D64 FGR64:$src)>;
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def : Pat<(f64 (fextend FGR32:$src)), (CVT_D64_S FGR32:$src)>;
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} |