forked from OSchip/llvm-project
457 lines
23 KiB
C++
457 lines
23 KiB
C++
//==- X86InstrFPStack.td - Describe the X86 Instruction Set -------*- C++ -*-=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the Evan Cheng and is distributed under
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// the University of Illinois Open Source 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 X86 x87 FPU instruction set, defining the
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// instructions, and properties of the instructions which are needed for code
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// generation, machine code emission, and analysis.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// FPStack specific DAG Nodes.
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//===----------------------------------------------------------------------===//
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def SDTX86FpGet : SDTypeProfile<1, 0, [SDTCisFP<0>]>;
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def SDTX86FpSet : SDTypeProfile<0, 1, [SDTCisFP<0>]>;
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def SDTX86Fld : SDTypeProfile<1, 2, [SDTCisFP<0>,
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SDTCisPtrTy<1>,
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SDTCisVT<2, OtherVT>]>;
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def SDTX86Fst : SDTypeProfile<0, 3, [SDTCisFP<0>,
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SDTCisPtrTy<1>,
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SDTCisVT<2, OtherVT>]>;
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def SDTX86Fild : SDTypeProfile<1, 2, [SDTCisFP<0>, SDTCisPtrTy<1>,
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SDTCisVT<2, OtherVT>]>;
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def SDTX86FpToIMem : SDTypeProfile<0, 2, [SDTCisFP<0>, SDTCisPtrTy<1>]>;
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def X86fpget : SDNode<"X86ISD::FP_GET_RESULT", SDTX86FpGet,
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[SDNPHasChain, SDNPInFlag, SDNPOutFlag]>;
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def X86fpset : SDNode<"X86ISD::FP_SET_RESULT", SDTX86FpSet,
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[SDNPHasChain, SDNPOutFlag]>;
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def X86fld : SDNode<"X86ISD::FLD", SDTX86Fld,
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[SDNPHasChain]>;
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def X86fst : SDNode<"X86ISD::FST", SDTX86Fst,
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[SDNPHasChain, SDNPInFlag]>;
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def X86fild : SDNode<"X86ISD::FILD", SDTX86Fild,
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[SDNPHasChain]>;
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def X86fildflag : SDNode<"X86ISD::FILD_FLAG",SDTX86Fild,
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[SDNPHasChain, SDNPOutFlag]>;
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def X86fp_to_i16mem : SDNode<"X86ISD::FP_TO_INT16_IN_MEM", SDTX86FpToIMem,
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[SDNPHasChain]>;
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def X86fp_to_i32mem : SDNode<"X86ISD::FP_TO_INT32_IN_MEM", SDTX86FpToIMem,
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[SDNPHasChain]>;
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def X86fp_to_i64mem : SDNode<"X86ISD::FP_TO_INT64_IN_MEM", SDTX86FpToIMem,
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[SDNPHasChain]>;
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//===----------------------------------------------------------------------===//
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// FPStack pattern fragments
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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 fpimmneg0 : PatLeaf<(fpimm), [{
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return N->isExactlyValue(-0.0);
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}]>;
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def fpimm1 : PatLeaf<(fpimm), [{
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return N->isExactlyValue(+1.0);
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}]>;
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def fpimmneg1 : PatLeaf<(fpimm), [{
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return N->isExactlyValue(-1.0);
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}]>;
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// Some 'special' instructions
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let usesCustomDAGSchedInserter = 1 in { // Expanded by the scheduler.
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def FP32_TO_INT16_IN_MEM : I<0, Pseudo,
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(outs), (ins i16mem:$dst, RFP32:$src),
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"#FP32_TO_INT16_IN_MEM PSEUDO!",
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[(X86fp_to_i16mem RFP32:$src, addr:$dst)]>;
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def FP32_TO_INT32_IN_MEM : I<0, Pseudo,
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(outs), (ins i32mem:$dst, RFP32:$src),
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"#FP32_TO_INT32_IN_MEM PSEUDO!",
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[(X86fp_to_i32mem RFP32:$src, addr:$dst)]>;
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def FP32_TO_INT64_IN_MEM : I<0, Pseudo,
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(outs), (ins i64mem:$dst, RFP32:$src),
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"#FP32_TO_INT64_IN_MEM PSEUDO!",
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[(X86fp_to_i64mem RFP32:$src, addr:$dst)]>;
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def FP64_TO_INT16_IN_MEM : I<0, Pseudo,
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(outs), (ins i16mem:$dst, RFP64:$src),
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"#FP64_TO_INT16_IN_MEM PSEUDO!",
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[(X86fp_to_i16mem RFP64:$src, addr:$dst)]>;
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def FP64_TO_INT32_IN_MEM : I<0, Pseudo,
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(outs), (ins i32mem:$dst, RFP64:$src),
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"#FP64_TO_INT32_IN_MEM PSEUDO!",
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[(X86fp_to_i32mem RFP64:$src, addr:$dst)]>;
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def FP64_TO_INT64_IN_MEM : I<0, Pseudo,
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(outs), (ins i64mem:$dst, RFP64:$src),
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"#FP64_TO_INT64_IN_MEM PSEUDO!",
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[(X86fp_to_i64mem RFP64:$src, addr:$dst)]>;
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}
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let isTerminator = 1 in
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let Defs = [FP0, FP1, FP2, FP3, FP4, FP5, FP6] in
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def FP_REG_KILL : I<0, Pseudo, (outs), (ins), "#FP_REG_KILL", []>;
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// All FP Stack operations are represented with three instructions here. The
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// first two instructions, generated by the instruction selector, uses "RFP32"
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// or "RFP64" registers: traditional register files to reference 32-bit or
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// 64-bit floating point values. These sizes apply to the values, not the
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// registers, which are always 64 bits; RFP32 and RFP64 can be copied to
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// each other without losing information. These instructions are all psuedo
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// instructions and use the "_Fp" suffix.
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// In some cases there are additional variants with a mixture of 32-bit and
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// 64-bit registers.
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// The second instruction is defined with FPI, which is the actual instruction
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// emitted by the assembler. These use "RST" registers, although frequently
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// the actual register(s) used are implicit. These are always 64-bits.
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// The FP stackifier pass converts one to the other after register allocation
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// occurs.
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//
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// Note that the FpI instruction should have instruction selection info (e.g.
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// a pattern) and the FPI instruction should have emission info (e.g. opcode
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// encoding and asm printing info).
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// FPI - Floating Point Instruction template.
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class FPI<bits<8> o, Format F, dag outs, dag ins, string asm>
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: I<o, F, outs, ins, asm, []> {}
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// FpI_ - Floating Point Psuedo Instruction template. Not Predicated.
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class FpI_<dag outs, dag ins, FPFormat fp, list<dag> pattern>
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: X86Inst<0, Pseudo, NoImm, outs, ins, ""> {
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let FPForm = fp; let FPFormBits = FPForm.Value;
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let Pattern = pattern;
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}
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// Random Pseudo Instructions.
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def FpGETRESULT32 : FpI_<(outs RFP32:$dst), (ins), SpecialFP,
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[(set RFP32:$dst, X86fpget)]>; // FPR = ST(0)
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def FpGETRESULT64 : FpI_<(outs RFP64:$dst), (ins), SpecialFP,
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[(set RFP64:$dst, X86fpget)]>; // FPR = ST(0)
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def FpSETRESULT32 : FpI_<(outs), (ins RFP32:$src), SpecialFP,
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[(X86fpset RFP32:$src)]>, Imp<[], [ST0]>;// ST(0) = FPR
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def FpSETRESULT64 : FpI_<(outs), (ins RFP64:$src), SpecialFP,
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[(X86fpset RFP64:$src)]>, Imp<[], [ST0]>;// ST(0) = FPR
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// FpI - Floating Point Psuedo Instruction template. Predicated on FPStack.
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class FpI<dag outs, dag ins, FPFormat fp, list<dag> pattern> :
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FpI_<outs, ins, fp, pattern>, Requires<[FPStack]>;
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// Register copies. Just copies, the 64->32 version does not truncate.
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def MOV_Fp3232 : FpI<(outs RFP32:$dst), (ins RFP32:$src), SpecialFP, []>;
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def MOV_Fp3264 : FpI<(outs RFP64:$dst), (ins RFP32:$src), SpecialFP, []>;
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def MOV_Fp6432 : FpI<(outs RFP32:$dst), (ins RFP64:$src), SpecialFP, []>;
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def MOV_Fp6464 : FpI<(outs RFP64:$dst), (ins RFP64:$src), SpecialFP, []>;
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// Factoring for arithmetic.
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multiclass FPBinary_rr<SDNode OpNode> {
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// Register op register -> register
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// These are separated out because they have no reversed form.
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def _Fp32 : FpI<(outs RFP32:$dst), (ins RFP32:$src1, RFP32:$src2), TwoArgFP,
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[(set RFP32:$dst, (OpNode RFP32:$src1, RFP32:$src2))]>;
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def _Fp64 : FpI<(outs RFP64:$dst), (ins RFP64:$src1, RFP64:$src2), TwoArgFP,
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[(set RFP64:$dst, (OpNode RFP64:$src1, RFP64:$src2))]>;
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}
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// The FopST0 series are not included here because of the irregularities
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// in where the 'r' goes in assembly output.
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multiclass FPBinary<SDNode OpNode, Format fp, string asmstring> {
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// ST(0) = ST(0) + [mem]
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def _Fp32m : FpI<(outs RFP32:$dst), (ins RFP32:$src1, f32mem:$src2), OneArgFPRW,
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[(set RFP32:$dst,
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(OpNode RFP32:$src1, (loadf32 addr:$src2)))]>;
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def _Fp64m : FpI<(outs RFP64:$dst), (ins RFP64:$src1, f64mem:$src2), OneArgFPRW,
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[(set RFP64:$dst,
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(OpNode RFP64:$src1, (loadf64 addr:$src2)))]>;
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def _Fp64m32: FpI<(outs RFP64:$dst), (ins RFP64:$src1, f32mem:$src2), OneArgFPRW,
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[(set RFP64:$dst,
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(OpNode RFP64:$src1, (extloadf32 addr:$src2)))]>;
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def _F32m : FPI<0xD8, fp, (outs), (ins f32mem:$src),
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!strconcat("f", !strconcat(asmstring, "{s} $src"))>;
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def _F64m : FPI<0xDC, fp, (outs), (ins f64mem:$src),
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!strconcat("f", !strconcat(asmstring, "{l} $src"))>;
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// ST(0) = ST(0) + [memint]
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def _FpI16m32 : FpI<(outs RFP32:$dst), (ins RFP32:$src1, i16mem:$src2), OneArgFPRW,
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[(set RFP32:$dst, (OpNode RFP32:$src1,
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(X86fild addr:$src2, i16)))]>;
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def _FpI32m32 : FpI<(outs RFP32:$dst), (ins RFP32:$src1, i32mem:$src2), OneArgFPRW,
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[(set RFP32:$dst, (OpNode RFP32:$src1,
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(X86fild addr:$src2, i32)))]>;
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def _FpI16m64 : FpI<(outs RFP64:$dst), (ins RFP64:$src1, i16mem:$src2), OneArgFPRW,
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[(set RFP64:$dst, (OpNode RFP64:$src1,
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(X86fild addr:$src2, i16)))]>;
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def _FpI32m64 : FpI<(outs RFP64:$dst), (ins RFP64:$src1, i32mem:$src2), OneArgFPRW,
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[(set RFP64:$dst, (OpNode RFP64:$src1,
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(X86fild addr:$src2, i32)))]>;
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def _FI16m : FPI<0xDE, fp, (outs), (ins i16mem:$src),
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!strconcat("fi", !strconcat(asmstring, "{s} $src"))>;
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def _FI32m : FPI<0xDA, fp, (outs), (ins i32mem:$src),
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!strconcat("fi", !strconcat(asmstring, "{l} $src"))>;
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}
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defm ADD : FPBinary_rr<fadd>;
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defm SUB : FPBinary_rr<fsub>;
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defm MUL : FPBinary_rr<fmul>;
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defm DIV : FPBinary_rr<fdiv>;
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defm ADD : FPBinary<fadd, MRM0m, "add">;
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defm SUB : FPBinary<fsub, MRM4m, "sub">;
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defm SUBR: FPBinary<fsub ,MRM5m, "subr">;
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defm MUL : FPBinary<fmul, MRM1m, "mul">;
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defm DIV : FPBinary<fdiv, MRM6m, "div">;
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defm DIVR: FPBinary<fdiv, MRM7m, "divr">;
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class FPST0rInst<bits<8> o, string asm>
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: FPI<o, AddRegFrm, (outs), (ins RST:$op), asm>, D8;
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class FPrST0Inst<bits<8> o, string asm>
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: FPI<o, AddRegFrm, (outs), (ins RST:$op), asm>, DC;
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class FPrST0PInst<bits<8> o, string asm>
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: FPI<o, AddRegFrm, (outs), (ins RST:$op), asm>, DE;
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// NOTE: GAS and apparently all other AT&T style assemblers have a broken notion
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// of some of the 'reverse' forms of the fsub and fdiv instructions. As such,
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// we have to put some 'r's in and take them out of weird places.
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def ADD_FST0r : FPST0rInst <0xC0, "fadd $op">;
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def ADD_FrST0 : FPrST0Inst <0xC0, "fadd {%st(0), $op|$op, %ST(0)}">;
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def ADD_FPrST0 : FPrST0PInst<0xC0, "faddp $op">;
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def SUBR_FST0r : FPST0rInst <0xE8, "fsubr $op">;
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def SUB_FrST0 : FPrST0Inst <0xE8, "fsub{r} {%st(0), $op|$op, %ST(0)}">;
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def SUB_FPrST0 : FPrST0PInst<0xE8, "fsub{r}p $op">;
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def SUB_FST0r : FPST0rInst <0xE0, "fsub $op">;
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def SUBR_FrST0 : FPrST0Inst <0xE0, "fsub{|r} {%st(0), $op|$op, %ST(0)}">;
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def SUBR_FPrST0 : FPrST0PInst<0xE0, "fsub{|r}p $op">;
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def MUL_FST0r : FPST0rInst <0xC8, "fmul $op">;
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def MUL_FrST0 : FPrST0Inst <0xC8, "fmul {%st(0), $op|$op, %ST(0)}">;
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def MUL_FPrST0 : FPrST0PInst<0xC8, "fmulp $op">;
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def DIVR_FST0r : FPST0rInst <0xF8, "fdivr $op">;
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def DIV_FrST0 : FPrST0Inst <0xF8, "fdiv{r} {%st(0), $op|$op, %ST(0)}">;
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def DIV_FPrST0 : FPrST0PInst<0xF8, "fdiv{r}p $op">;
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def DIV_FST0r : FPST0rInst <0xF0, "fdiv $op">;
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def DIVR_FrST0 : FPrST0Inst <0xF0, "fdiv{|r} {%st(0), $op|$op, %ST(0)}">;
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def DIVR_FPrST0 : FPrST0PInst<0xF0, "fdiv{|r}p $op">;
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// Unary operations.
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multiclass FPUnary<SDNode OpNode, bits<8> opcode, string asmstring> {
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def _Fp32 : FpI<(outs RFP32:$dst), (ins RFP32:$src), OneArgFPRW,
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[(set RFP32:$dst, (OpNode RFP32:$src))]>;
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def _Fp64 : FpI<(outs RFP64:$dst), (ins RFP64:$src), OneArgFPRW,
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[(set RFP64:$dst, (OpNode RFP64:$src))]>;
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def _F : FPI<opcode, RawFrm, (outs), (ins), asmstring>, D9;
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}
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defm CHS : FPUnary<fneg, 0xE0, "fchs">;
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defm ABS : FPUnary<fabs, 0xE1, "fabs">;
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defm SQRT: FPUnary<fsqrt,0xFA, "fsqrt">;
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defm SIN : FPUnary<fsin, 0xFE, "fsin">;
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defm COS : FPUnary<fcos, 0xFF, "fcos">;
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def TST_Fp32 : FpI<(outs), (ins RFP32:$src), OneArgFP,
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[]>;
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def TST_Fp64 : FpI<(outs), (ins RFP64:$src), OneArgFP,
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[]>;
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def TST_F : FPI<0xE4, RawFrm, (outs), (ins), "ftst">, D9;
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// Floating point cmovs.
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multiclass FPCMov<PatLeaf cc> {
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def _Fp32 : FpI<(outs RFP32:$dst), (ins RFP32:$src1, RFP32:$src2), CondMovFP,
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[(set RFP32:$dst, (X86cmov RFP32:$src1, RFP32:$src2,
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cc))]>;
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def _Fp64 : FpI<(outs RFP64:$dst), (ins RFP64:$src1, RFP64:$src2), CondMovFP,
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[(set RFP64:$dst, (X86cmov RFP64:$src1, RFP64:$src2,
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cc))]>;
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}
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let isTwoAddress = 1 in {
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defm CMOVB : FPCMov<X86_COND_B>;
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defm CMOVBE : FPCMov<X86_COND_BE>;
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defm CMOVE : FPCMov<X86_COND_E>;
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defm CMOVP : FPCMov<X86_COND_P>;
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defm CMOVNB : FPCMov<X86_COND_AE>;
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defm CMOVNBE: FPCMov<X86_COND_A>;
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defm CMOVNE : FPCMov<X86_COND_NE>;
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defm CMOVNP : FPCMov<X86_COND_NP>;
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}
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// These are not factored because there's no clean way to pass DA/DB.
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def CMOVB_F : FPI<0xC0, AddRegFrm, (outs RST:$op), (ins),
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"fcmovb {$op, %st(0)|%ST(0), $op}">, DA;
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def CMOVBE_F : FPI<0xD0, AddRegFrm, (outs RST:$op), (ins),
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"fcmovbe {$op, %st(0)|%ST(0), $op}">, DA;
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def CMOVE_F : FPI<0xC8, AddRegFrm, (outs RST:$op), (ins),
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"fcmove {$op, %st(0)|%ST(0), $op}">, DA;
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def CMOVP_F : FPI<0xD8, AddRegFrm, (outs RST:$op), (ins),
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"fcmovu {$op, %st(0)|%ST(0), $op}">, DA;
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def CMOVNB_F : FPI<0xC0, AddRegFrm, (outs RST:$op), (ins),
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"fcmovnb {$op, %st(0)|%ST(0), $op}">, DB;
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def CMOVNBE_F: FPI<0xD0, AddRegFrm, (outs RST:$op), (ins),
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"fcmovnbe {$op, %st(0)|%ST(0), $op}">, DB;
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def CMOVNE_F : FPI<0xC8, AddRegFrm, (outs RST:$op), (ins),
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"fcmovne {$op, %st(0)|%ST(0), $op}">, DB;
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def CMOVNP_F : FPI<0xD8, AddRegFrm, (outs RST:$op), (ins),
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"fcmovnu {$op, %st(0)|%ST(0), $op}">, DB;
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// Floating point loads & stores.
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def LD_Fp32m : FpI<(outs RFP32:$dst), (ins f32mem:$src), ZeroArgFP,
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[(set RFP32:$dst, (loadf32 addr:$src))]>;
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def LD_Fp64m : FpI<(outs RFP64:$dst), (ins f64mem:$src), ZeroArgFP,
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[(set RFP64:$dst, (loadf64 addr:$src))]>;
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def ILD_Fp16m32: FpI<(outs RFP32:$dst), (ins i16mem:$src), ZeroArgFP,
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[(set RFP32:$dst, (X86fild addr:$src, i16))]>;
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def ILD_Fp32m32: FpI<(outs RFP32:$dst), (ins i32mem:$src), ZeroArgFP,
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[(set RFP32:$dst, (X86fild addr:$src, i32))]>;
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def ILD_Fp64m32: FpI<(outs RFP32:$dst), (ins i64mem:$src), ZeroArgFP,
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[(set RFP32:$dst, (X86fild addr:$src, i64))]>;
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def ILD_Fp16m64: FpI<(outs RFP64:$dst), (ins i16mem:$src), ZeroArgFP,
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[(set RFP64:$dst, (X86fild addr:$src, i16))]>;
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def ILD_Fp32m64: FpI<(outs RFP64:$dst), (ins i32mem:$src), ZeroArgFP,
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[(set RFP64:$dst, (X86fild addr:$src, i32))]>;
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def ILD_Fp64m64: FpI<(outs RFP64:$dst), (ins i64mem:$src), ZeroArgFP,
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[(set RFP64:$dst, (X86fild addr:$src, i64))]>;
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def ST_Fp32m : FpI<(outs), (ins f32mem:$op, RFP32:$src), OneArgFP,
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[(store RFP32:$src, addr:$op)]>;
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def ST_Fp64m32 : FpI<(outs), (ins f32mem:$op, RFP64:$src), OneArgFP,
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[(truncstoref32 RFP64:$src, addr:$op)]>;
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def ST_Fp64m : FpI<(outs), (ins f64mem:$op, RFP64:$src), OneArgFP,
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[(store RFP64:$src, addr:$op)]>;
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def ST_FpP32m : FpI<(outs), (ins f32mem:$op, RFP32:$src), OneArgFP, []>;
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def ST_FpP64m32 : FpI<(outs), (ins f32mem:$op, RFP64:$src), OneArgFP, []>;
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def ST_FpP64m : FpI<(outs), (ins f64mem:$op, RFP64:$src), OneArgFP, []>;
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def IST_Fp16m32 : FpI<(outs), (ins i16mem:$op, RFP32:$src), OneArgFP, []>;
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def IST_Fp32m32 : FpI<(outs), (ins i32mem:$op, RFP32:$src), OneArgFP, []>;
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def IST_Fp64m32 : FpI<(outs), (ins i64mem:$op, RFP32:$src), OneArgFP, []>;
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def IST_Fp16m64 : FpI<(outs), (ins i16mem:$op, RFP64:$src), OneArgFP, []>;
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def IST_Fp32m64 : FpI<(outs), (ins i32mem:$op, RFP64:$src), OneArgFP, []>;
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def IST_Fp64m64 : FpI<(outs), (ins i64mem:$op, RFP64:$src), OneArgFP, []>;
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def LD_F32m : FPI<0xD9, MRM0m, (outs), (ins f32mem:$src), "fld{s} $src">;
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def LD_F64m : FPI<0xDD, MRM0m, (outs), (ins f64mem:$src), "fld{l} $src">;
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def ILD_F16m : FPI<0xDF, MRM0m, (outs), (ins i16mem:$src), "fild{s} $src">;
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def ILD_F32m : FPI<0xDB, MRM0m, (outs), (ins i32mem:$src), "fild{l} $src">;
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def ILD_F64m : FPI<0xDF, MRM5m, (outs), (ins i64mem:$src), "fild{ll} $src">;
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def ST_F32m : FPI<0xD9, MRM2m, (outs), (ins f32mem:$dst), "fst{s} $dst">;
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def ST_F64m : FPI<0xDD, MRM2m, (outs), (ins f64mem:$dst), "fst{l} $dst">;
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def ST_FP32m : FPI<0xD9, MRM3m, (outs), (ins f32mem:$dst), "fstp{s} $dst">;
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def ST_FP64m : FPI<0xDD, MRM3m, (outs), (ins f64mem:$dst), "fstp{l} $dst">;
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def IST_F16m : FPI<0xDF, MRM2m, (outs), (ins i16mem:$dst), "fist{s} $dst">;
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def IST_F32m : FPI<0xDB, MRM2m, (outs), (ins i32mem:$dst), "fist{l} $dst">;
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def IST_FP16m : FPI<0xDF, MRM3m, (outs), (ins i16mem:$dst), "fistp{s} $dst">;
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def IST_FP32m : FPI<0xDB, MRM3m, (outs), (ins i32mem:$dst), "fistp{l} $dst">;
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def IST_FP64m : FPI<0xDF, MRM7m, (outs), (ins i64mem:$dst), "fistp{ll} $dst">;
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// FISTTP requires SSE3 even though it's a FPStack op.
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def ISTT_Fp16m32 : FpI_<(outs), (ins i16mem:$op, RFP32:$src), OneArgFP,
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[(X86fp_to_i16mem RFP32:$src, addr:$op)]>,
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Requires<[HasSSE3]>;
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def ISTT_Fp32m32 : FpI_<(outs), (ins i32mem:$op, RFP32:$src), OneArgFP,
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[(X86fp_to_i32mem RFP32:$src, addr:$op)]>,
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Requires<[HasSSE3]>;
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def ISTT_Fp64m32 : FpI_<(outs), (ins i64mem:$op, RFP32:$src), OneArgFP,
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[(X86fp_to_i64mem RFP32:$src, addr:$op)]>,
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Requires<[HasSSE3]>;
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def ISTT_Fp16m64 : FpI_<(outs), (ins i16mem:$op, RFP64:$src), OneArgFP,
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[(X86fp_to_i16mem RFP64:$src, addr:$op)]>,
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Requires<[HasSSE3]>;
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def ISTT_Fp32m64 : FpI_<(outs), (ins i32mem:$op, RFP64:$src), OneArgFP,
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[(X86fp_to_i32mem RFP64:$src, addr:$op)]>,
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Requires<[HasSSE3]>;
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def ISTT_Fp64m64 : FpI_<(outs), (ins i64mem:$op, RFP64:$src), OneArgFP,
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[(X86fp_to_i64mem RFP64:$src, addr:$op)]>,
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Requires<[HasSSE3]>;
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def ISTT_FP16m : FPI<0xDF, MRM1m, (outs), (ins i16mem:$dst), "fisttp{s} $dst">;
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def ISTT_FP32m : FPI<0xDB, MRM1m, (outs), (ins i32mem:$dst), "fisttp{l} $dst">;
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def ISTT_FP64m : FPI<0xDD, MRM1m, (outs), (ins i64mem:$dst), "fisttp{ll} $dst">;
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// FP Stack manipulation instructions.
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def LD_Frr : FPI<0xC0, AddRegFrm, (outs), (ins RST:$op), "fld $op">, D9;
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def ST_Frr : FPI<0xD0, AddRegFrm, (outs), (ins RST:$op), "fst $op">, DD;
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def ST_FPrr : FPI<0xD8, AddRegFrm, (outs), (ins RST:$op), "fstp $op">, DD;
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def XCH_F : FPI<0xC8, AddRegFrm, (outs), (ins RST:$op), "fxch $op">, D9;
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// Floating point constant loads.
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let isReMaterializable = 1 in {
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def LD_Fp032 : FpI<(outs RFP32:$dst), (ins), ZeroArgFP,
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[(set RFP32:$dst, fpimm0)]>;
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def LD_Fp132 : FpI<(outs RFP32:$dst), (ins), ZeroArgFP,
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[(set RFP32:$dst, fpimm1)]>;
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def LD_Fp064 : FpI<(outs RFP64:$dst), (ins), ZeroArgFP,
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[(set RFP64:$dst, fpimm0)]>;
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def LD_Fp164 : FpI<(outs RFP64:$dst), (ins), ZeroArgFP,
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[(set RFP64:$dst, fpimm1)]>;
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}
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def LD_F0 : FPI<0xEE, RawFrm, (outs), (ins), "fldz">, D9;
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def LD_F1 : FPI<0xE8, RawFrm, (outs), (ins), "fld1">, D9;
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// Floating point compares.
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def UCOM_Fpr32 : FpI<(outs), (ins RFP32:$lhs, RFP32:$rhs), CompareFP,
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[]>; // FPSW = cmp ST(0) with ST(i)
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def UCOM_FpIr32: FpI<(outs), (ins RFP32:$lhs, RFP32:$rhs), CompareFP,
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[(X86cmp RFP32:$lhs, RFP32:$rhs)]>; // CC = ST(0) cmp ST(i)
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def UCOM_Fpr64 : FpI<(outs), (ins RFP64:$lhs, RFP64:$rhs), CompareFP,
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[]>; // FPSW = cmp ST(0) with ST(i)
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def UCOM_FpIr64: FpI<(outs), (ins RFP64:$lhs, RFP64:$rhs), CompareFP,
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[(X86cmp RFP64:$lhs, RFP64:$rhs)]>; // CC = ST(0) cmp ST(i)
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def UCOM_Fr : FPI<0xE0, AddRegFrm, // FPSW = cmp ST(0) with ST(i)
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(outs), (ins RST:$reg),
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"fucom $reg">, DD, Imp<[ST0],[]>;
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def UCOM_FPr : FPI<0xE8, AddRegFrm, // FPSW = cmp ST(0) with ST(i), pop
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(outs), (ins RST:$reg),
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"fucomp $reg">, DD, Imp<[ST0],[]>;
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def UCOM_FPPr : FPI<0xE9, RawFrm, // cmp ST(0) with ST(1), pop, pop
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(outs), (ins),
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"fucompp">, DA, Imp<[ST0],[]>;
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def UCOM_FIr : FPI<0xE8, AddRegFrm, // CC = cmp ST(0) with ST(i)
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(outs), (ins RST:$reg),
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"fucomi {$reg, %st(0)|%ST(0), $reg}">, DB, Imp<[ST0],[]>;
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def UCOM_FIPr : FPI<0xE8, AddRegFrm, // CC = cmp ST(0) with ST(i), pop
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(outs), (ins RST:$reg),
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"fucomip {$reg, %st(0)|%ST(0), $reg}">, DF, Imp<[ST0],[]>;
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// Floating point flag ops.
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def FNSTSW8r : I<0xE0, RawFrm, // AX = fp flags
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(outs), (ins), "fnstsw", []>, DF, Imp<[],[AX]>;
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def FNSTCW16m : I<0xD9, MRM7m, // [mem16] = X87 control world
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(outs), (ins i16mem:$dst), "fnstcw $dst", []>;
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def FLDCW16m : I<0xD9, MRM5m, // X87 control world = [mem16]
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(outs), (ins i16mem:$dst), "fldcw $dst", []>;
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//===----------------------------------------------------------------------===//
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// Non-Instruction Patterns
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//===----------------------------------------------------------------------===//
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// Required for RET of f32 / f64 values.
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def : Pat<(X86fld addr:$src, f32), (LD_Fp32m addr:$src)>;
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def : Pat<(X86fld addr:$src, f64), (LD_Fp64m addr:$src)>;
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// Required for CALL which return f32 / f64 values.
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def : Pat<(X86fst RFP32:$src, addr:$op, f32), (ST_Fp32m addr:$op, RFP32:$src)>;
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def : Pat<(X86fst RFP64:$src, addr:$op, f32), (ST_Fp64m32 addr:$op, RFP64:$src)>;
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def : Pat<(X86fst RFP64:$src, addr:$op, f64), (ST_Fp64m addr:$op, RFP64:$src)>;
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// Floating point constant -0.0 and -1.0
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def : Pat<(f32 fpimmneg0), (CHS_Fp32 (LD_Fp032))>, Requires<[FPStack]>;
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def : Pat<(f32 fpimmneg1), (CHS_Fp32 (LD_Fp132))>, Requires<[FPStack]>;
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def : Pat<(f64 fpimmneg0), (CHS_Fp64 (LD_Fp064))>, Requires<[FPStack]>;
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def : Pat<(f64 fpimmneg1), (CHS_Fp64 (LD_Fp164))>, Requires<[FPStack]>;
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// Used to conv. i64 to f64 since there isn't a SSE version.
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def : Pat<(X86fildflag addr:$src, i64), (ILD_Fp64m64 addr:$src)>;
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def : Pat<(extloadf32 addr:$src),
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(MOV_Fp3264 (LD_Fp32m addr:$src))>, Requires<[FPStack]>;
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def : Pat<(fextend RFP32:$src), (MOV_Fp3264 RFP32:$src)>, Requires<[FPStack]>;
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