forked from OSchip/llvm-project
684 lines
34 KiB
TableGen
684 lines
34 KiB
TableGen
//===- X86InstrFPStack.td - FPU Instruction Set ------------*- 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 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 SDTX86FpGet2 : SDTypeProfile<2, 0, [SDTCisVT<0, f80>,
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SDTCisVT<1, f80>]>;
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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 SDTX86Fnstsw : SDTypeProfile<1, 1, [SDTCisVT<0, i16>, SDTCisVT<1, i16>]>;
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def SDTX86FpToIMem : SDTypeProfile<0, 2, [SDTCisFP<0>, SDTCisPtrTy<1>]>;
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def SDTX86CwdStore : SDTypeProfile<0, 1, [SDTCisPtrTy<0>]>;
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def X86fld : SDNode<"X86ISD::FLD", SDTX86Fld,
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[SDNPHasChain, SDNPMayLoad, SDNPMemOperand]>;
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def X86fst : SDNode<"X86ISD::FST", SDTX86Fst,
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[SDNPHasChain, SDNPInGlue, SDNPMayStore,
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SDNPMemOperand]>;
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def X86fild : SDNode<"X86ISD::FILD", SDTX86Fild,
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[SDNPHasChain, SDNPMayLoad, SDNPMemOperand]>;
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def X86fildflag : SDNode<"X86ISD::FILD_FLAG", SDTX86Fild,
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[SDNPHasChain, SDNPOutGlue, SDNPMayLoad,
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SDNPMemOperand]>;
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def X86fp_stsw : SDNode<"X86ISD::FNSTSW16r", SDTX86Fnstsw>;
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def X86fp_to_i16mem : SDNode<"X86ISD::FP_TO_INT16_IN_MEM", SDTX86FpToIMem,
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[SDNPHasChain, SDNPMayStore, SDNPMemOperand]>;
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def X86fp_to_i32mem : SDNode<"X86ISD::FP_TO_INT32_IN_MEM", SDTX86FpToIMem,
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[SDNPHasChain, SDNPMayStore, SDNPMemOperand]>;
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def X86fp_to_i64mem : SDNode<"X86ISD::FP_TO_INT64_IN_MEM", SDTX86FpToIMem,
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[SDNPHasChain, SDNPMayStore, SDNPMemOperand]>;
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def X86fp_cwd_get16 : SDNode<"X86ISD::FNSTCW16m", SDTX86CwdStore,
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[SDNPHasChain, SDNPMayStore, SDNPSideEffect,
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SDNPMemOperand]>;
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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 usesCustomInserter = 1 in { // Expanded after instruction selection.
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def FP32_TO_INT16_IN_MEM : PseudoI<(outs), (ins i16mem:$dst, RFP32:$src),
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[(X86fp_to_i16mem RFP32:$src, addr:$dst)]>;
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def FP32_TO_INT32_IN_MEM : PseudoI<(outs), (ins i32mem:$dst, RFP32:$src),
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[(X86fp_to_i32mem RFP32:$src, addr:$dst)]>;
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def FP32_TO_INT64_IN_MEM : PseudoI<(outs), (ins i64mem:$dst, RFP32:$src),
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[(X86fp_to_i64mem RFP32:$src, addr:$dst)]>;
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def FP64_TO_INT16_IN_MEM : PseudoI<(outs), (ins i16mem:$dst, RFP64:$src),
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[(X86fp_to_i16mem RFP64:$src, addr:$dst)]>;
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def FP64_TO_INT32_IN_MEM : PseudoI<(outs), (ins i32mem:$dst, RFP64:$src),
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[(X86fp_to_i32mem RFP64:$src, addr:$dst)]>;
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def FP64_TO_INT64_IN_MEM : PseudoI<(outs), (ins i64mem:$dst, RFP64:$src),
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[(X86fp_to_i64mem RFP64:$src, addr:$dst)]>;
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def FP80_TO_INT16_IN_MEM : PseudoI<(outs), (ins i16mem:$dst, RFP80:$src),
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[(X86fp_to_i16mem RFP80:$src, addr:$dst)]>;
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def FP80_TO_INT32_IN_MEM : PseudoI<(outs), (ins i32mem:$dst, RFP80:$src),
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[(X86fp_to_i32mem RFP80:$src, addr:$dst)]>;
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def FP80_TO_INT64_IN_MEM : PseudoI<(outs), (ins i64mem:$dst, RFP80:$src),
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[(X86fp_to_i64mem RFP80:$src, addr:$dst)]>;
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}
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// All FP Stack operations are represented with four instructions here. The
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// first three instructions, generated by the instruction selector, use "RFP32"
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// "RFP64" or "RFP80" registers: traditional register files to reference 32-bit,
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// 64-bit or 80-bit floating point values. These sizes apply to the values,
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// not the registers, which are always 80 bits; RFP32, RFP64 and RFP80 can be
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// copied to each other without losing information. These instructions are all
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// pseudo instructions and use the "_Fp" suffix.
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// In some cases there are additional variants with a mixture of different
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// register sizes.
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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 80 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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// Pseudo Instruction for FP stack return values.
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def FpPOP_RETVAL : FpI_<(outs RFP80:$dst), (ins), SpecialFP, []>;
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// FpIf32, FpIf64 - Floating Point Pseudo Instruction template.
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// f32 instructions can use SSE1 and are predicated on FPStackf32 == !SSE1.
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// f64 instructions can use SSE2 and are predicated on FPStackf64 == !SSE2.
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// f80 instructions cannot use SSE and use neither of these.
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class FpIf32<dag outs, dag ins, FPFormat fp, list<dag> pattern> :
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FpI_<outs, ins, fp, pattern>, Requires<[FPStackf32]>;
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class FpIf64<dag outs, dag ins, FPFormat fp, list<dag> pattern> :
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FpI_<outs, ins, fp, pattern>, Requires<[FPStackf64]>;
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// Factoring for arithmetic.
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multiclass FPBinary_rr<SDNode OpNode> {
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// Register op register -> register
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// These are separated out because they have no reversed form.
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def _Fp32 : FpIf32<(outs RFP32:$dst), (ins RFP32:$src1, RFP32:$src2), TwoArgFP,
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[(set RFP32:$dst, (OpNode RFP32:$src1, RFP32:$src2))]>;
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def _Fp64 : FpIf64<(outs RFP64:$dst), (ins RFP64:$src1, RFP64:$src2), TwoArgFP,
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[(set RFP64:$dst, (OpNode RFP64:$src1, RFP64:$src2))]>;
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def _Fp80 : FpI_<(outs RFP80:$dst), (ins RFP80:$src1, RFP80:$src2), TwoArgFP,
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[(set RFP80:$dst, (OpNode RFP80:$src1, RFP80:$src2))]>;
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}
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// The FopST0 series are not included here because of the irregularities
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// in where the 'r' goes in assembly output.
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// These instructions cannot address 80-bit memory.
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multiclass FPBinary<SDNode OpNode, Format fp, string asmstring> {
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// ST(0) = ST(0) + [mem]
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def _Fp32m : FpIf32<(outs RFP32:$dst),
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(ins RFP32:$src1, f32mem:$src2), OneArgFPRW,
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[(set RFP32:$dst,
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(OpNode RFP32:$src1, (loadf32 addr:$src2)))]>;
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def _Fp64m : FpIf64<(outs RFP64:$dst),
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(ins RFP64:$src1, f64mem:$src2), OneArgFPRW,
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[(set RFP64:$dst,
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(OpNode RFP64:$src1, (loadf64 addr:$src2)))]>;
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def _Fp64m32: FpIf64<(outs RFP64:$dst),
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(ins RFP64:$src1, f32mem:$src2), OneArgFPRW,
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[(set RFP64:$dst,
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(OpNode RFP64:$src1, (f64 (extloadf32 addr:$src2))))]>;
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def _Fp80m32: FpI_<(outs RFP80:$dst),
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(ins RFP80:$src1, f32mem:$src2), OneArgFPRW,
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[(set RFP80:$dst,
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(OpNode RFP80:$src1, (f80 (extloadf32 addr:$src2))))]>;
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def _Fp80m64: FpI_<(outs RFP80:$dst),
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(ins RFP80:$src1, f64mem:$src2), OneArgFPRW,
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[(set RFP80:$dst,
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(OpNode RFP80:$src1, (f80 (extloadf64 addr:$src2))))]>;
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def _F32m : FPI<0xD8, fp, (outs), (ins f32mem:$src),
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!strconcat("f", asmstring, "{s}\t$src")> {
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let mayLoad = 1;
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}
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def _F64m : FPI<0xDC, fp, (outs), (ins f64mem:$src),
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!strconcat("f", asmstring, "{l}\t$src")> {
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let mayLoad = 1;
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}
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// ST(0) = ST(0) + [memint]
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def _FpI16m32 : FpIf32<(outs RFP32:$dst), (ins RFP32:$src1, i16mem:$src2),
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OneArgFPRW,
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[(set RFP32:$dst, (OpNode RFP32:$src1,
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(X86fild addr:$src2, i16)))]>;
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def _FpI32m32 : FpIf32<(outs RFP32:$dst), (ins RFP32:$src1, i32mem:$src2),
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OneArgFPRW,
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[(set RFP32:$dst, (OpNode RFP32:$src1,
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(X86fild addr:$src2, i32)))]>;
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def _FpI16m64 : FpIf64<(outs RFP64:$dst), (ins RFP64:$src1, i16mem:$src2),
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OneArgFPRW,
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[(set RFP64:$dst, (OpNode RFP64:$src1,
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(X86fild addr:$src2, i16)))]>;
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def _FpI32m64 : FpIf64<(outs RFP64:$dst), (ins RFP64:$src1, i32mem:$src2),
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OneArgFPRW,
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[(set RFP64:$dst, (OpNode RFP64:$src1,
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(X86fild addr:$src2, i32)))]>;
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def _FpI16m80 : FpI_<(outs RFP80:$dst), (ins RFP80:$src1, i16mem:$src2),
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OneArgFPRW,
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[(set RFP80:$dst, (OpNode RFP80:$src1,
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(X86fild addr:$src2, i16)))]>;
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def _FpI32m80 : FpI_<(outs RFP80:$dst), (ins RFP80:$src1, i32mem:$src2),
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OneArgFPRW,
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[(set RFP80:$dst, (OpNode RFP80:$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", asmstring, "{s}\t$src")> {
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let mayLoad = 1;
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}
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def _FI32m : FPI<0xDA, fp, (outs), (ins i32mem:$src),
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!strconcat("fi", asmstring, "{l}\t$src")> {
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let mayLoad = 1;
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}
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}
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let Defs = [FPSW] in {
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defm ADD : FPBinary_rr<fadd>;
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defm SUB : FPBinary_rr<fsub>;
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defm MUL : FPBinary_rr<fmul>;
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defm DIV : FPBinary_rr<fdiv>;
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defm ADD : FPBinary<fadd, MRM0m, "add">;
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defm SUB : FPBinary<fsub, MRM4m, "sub">;
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defm SUBR: FPBinary<fsub ,MRM5m, "subr">;
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defm MUL : FPBinary<fmul, MRM1m, "mul">;
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defm DIV : FPBinary<fdiv, MRM6m, "div">;
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defm DIVR: FPBinary<fdiv, MRM7m, "divr">;
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}
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class FPST0rInst<Format fp, string asm>
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: FPI<0xD8, fp, (outs), (ins RST:$op), asm>;
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class FPrST0Inst<Format fp, string asm>
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: FPI<0xDC, fp, (outs), (ins RST:$op), asm>;
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class FPrST0PInst<Format fp, string asm>
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: FPI<0xDE, fp, (outs), (ins RST:$op), asm>;
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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 <MRM0r, "fadd\t$op">;
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def ADD_FrST0 : FPrST0Inst <MRM0r, "fadd\t{%st(0), $op|$op, st(0)}">;
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def ADD_FPrST0 : FPrST0PInst<MRM0r, "faddp\t$op">;
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def SUBR_FST0r : FPST0rInst <MRM5r, "fsubr\t$op">;
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def SUB_FrST0 : FPrST0Inst <MRM5r, "fsub{r}\t{%st(0), $op|$op, st(0)}">;
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def SUB_FPrST0 : FPrST0PInst<MRM5r, "fsub{r}p\t$op">;
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def SUB_FST0r : FPST0rInst <MRM4r, "fsub\t$op">;
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def SUBR_FrST0 : FPrST0Inst <MRM4r, "fsub{|r}\t{%st(0), $op|$op, st(0)}">;
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def SUBR_FPrST0 : FPrST0PInst<MRM4r, "fsub{|r}p\t$op">;
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def MUL_FST0r : FPST0rInst <MRM1r, "fmul\t$op">;
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def MUL_FrST0 : FPrST0Inst <MRM1r, "fmul\t{%st(0), $op|$op, st(0)}">;
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def MUL_FPrST0 : FPrST0PInst<MRM1r, "fmulp\t$op">;
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def DIVR_FST0r : FPST0rInst <MRM7r, "fdivr\t$op">;
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def DIV_FrST0 : FPrST0Inst <MRM7r, "fdiv{r}\t{%st(0), $op|$op, st(0)}">;
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def DIV_FPrST0 : FPrST0PInst<MRM7r, "fdiv{r}p\t$op">;
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def DIV_FST0r : FPST0rInst <MRM6r, "fdiv\t$op">;
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def DIVR_FrST0 : FPrST0Inst <MRM6r, "fdiv{|r}\t{%st(0), $op|$op, st(0)}">;
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def DIVR_FPrST0 : FPrST0PInst<MRM6r, "fdiv{|r}p\t$op">;
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def COM_FST0r : FPST0rInst <MRM2r, "fcom\t$op">;
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def COMP_FST0r : FPST0rInst <MRM3r, "fcomp\t$op">;
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// Unary operations.
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multiclass FPUnary<SDNode OpNode, bits<8> opcode, string asmstring> {
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def _Fp32 : FpIf32<(outs RFP32:$dst), (ins RFP32:$src), OneArgFPRW,
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[(set RFP32:$dst, (OpNode RFP32:$src))]>;
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def _Fp64 : FpIf64<(outs RFP64:$dst), (ins RFP64:$src), OneArgFPRW,
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[(set RFP64:$dst, (OpNode RFP64:$src))]>;
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def _Fp80 : FpI_<(outs RFP80:$dst), (ins RFP80:$src), OneArgFPRW,
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[(set RFP80:$dst, (OpNode RFP80:$src))]>;
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def _F : FPI<opcode, RawFrm, (outs), (ins), asmstring>, D9;
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}
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let Defs = [FPSW] in {
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defm CHS : FPUnary<fneg, 0xE0, "fchs">;
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defm ABS : FPUnary<fabs, 0xE1, "fabs">;
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defm SQRT: FPUnary<fsqrt,0xFA, "fsqrt">;
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defm SIN : FPUnary<fsin, 0xFE, "fsin">;
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defm COS : FPUnary<fcos, 0xFF, "fcos">;
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let neverHasSideEffects = 1 in {
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def TST_Fp32 : FpIf32<(outs), (ins RFP32:$src), OneArgFP, []>;
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def TST_Fp64 : FpIf64<(outs), (ins RFP64:$src), OneArgFP, []>;
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def TST_Fp80 : FpI_<(outs), (ins RFP80:$src), OneArgFP, []>;
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}
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def TST_F : FPI<0xE4, RawFrm, (outs), (ins), "ftst">, D9;
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} // Defs = [FPSW]
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// Versions of FP instructions that take a single memory operand. Added for the
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// disassembler; remove as they are included with patterns elsewhere.
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def FCOM32m : FPI<0xD8, MRM2m, (outs), (ins f32mem:$src), "fcom{s}\t$src">;
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def FCOMP32m : FPI<0xD8, MRM3m, (outs), (ins f32mem:$src), "fcomp{s}\t$src">;
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def FLDENVm : FPI<0xD9, MRM4m, (outs), (ins f32mem:$src), "fldenv\t$src">;
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def FSTENVm : FPI<0xD9, MRM6m, (outs f32mem:$dst), (ins), "fnstenv\t$dst">;
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def FICOM32m : FPI<0xDA, MRM2m, (outs), (ins i32mem:$src), "ficom{l}\t$src">;
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def FICOMP32m: FPI<0xDA, MRM3m, (outs), (ins i32mem:$src), "ficomp{l}\t$src">;
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def FCOM64m : FPI<0xDC, MRM2m, (outs), (ins f64mem:$src), "fcom{l}\t$src">;
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def FCOMP64m : FPI<0xDC, MRM3m, (outs), (ins f64mem:$src), "fcomp{l}\t$src">;
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def FRSTORm : FPI<0xDD, MRM4m, (outs f32mem:$dst), (ins), "frstor\t$dst">;
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def FSAVEm : FPI<0xDD, MRM6m, (outs f32mem:$dst), (ins), "fnsave\t$dst">;
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def FNSTSWm : FPI<0xDD, MRM7m, (outs f32mem:$dst), (ins), "fnstsw\t$dst">;
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def FICOM16m : FPI<0xDE, MRM2m, (outs), (ins i16mem:$src), "ficom{s}\t$src">;
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def FICOMP16m: FPI<0xDE, MRM3m, (outs), (ins i16mem:$src), "ficomp{s}\t$src">;
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def FBLDm : FPI<0xDF, MRM4m, (outs), (ins f32mem:$src), "fbld\t$src">;
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def FBSTPm : FPI<0xDF, MRM6m, (outs f32mem:$dst), (ins), "fbstp\t$dst">;
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// Floating point cmovs.
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class FpIf32CMov<dag outs, dag ins, FPFormat fp, list<dag> pattern> :
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FpI_<outs, ins, fp, pattern>, Requires<[FPStackf32, HasCMov]>;
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class FpIf64CMov<dag outs, dag ins, FPFormat fp, list<dag> pattern> :
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FpI_<outs, ins, fp, pattern>, Requires<[FPStackf64, HasCMov]>;
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multiclass FPCMov<PatLeaf cc> {
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def _Fp32 : FpIf32CMov<(outs RFP32:$dst), (ins RFP32:$src1, RFP32:$src2),
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CondMovFP,
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[(set RFP32:$dst, (X86cmov RFP32:$src1, RFP32:$src2,
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cc, EFLAGS))]>;
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def _Fp64 : FpIf64CMov<(outs RFP64:$dst), (ins RFP64:$src1, RFP64:$src2),
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CondMovFP,
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[(set RFP64:$dst, (X86cmov RFP64:$src1, RFP64:$src2,
|
|
cc, EFLAGS))]>;
|
|
def _Fp80 : FpI_<(outs RFP80:$dst), (ins RFP80:$src1, RFP80:$src2),
|
|
CondMovFP,
|
|
[(set RFP80:$dst, (X86cmov RFP80:$src1, RFP80:$src2,
|
|
cc, EFLAGS))]>,
|
|
Requires<[HasCMov]>;
|
|
}
|
|
|
|
let Defs = [FPSW] in {
|
|
let Uses = [EFLAGS], Constraints = "$src1 = $dst" in {
|
|
defm CMOVB : FPCMov<X86_COND_B>;
|
|
defm CMOVBE : FPCMov<X86_COND_BE>;
|
|
defm CMOVE : FPCMov<X86_COND_E>;
|
|
defm CMOVP : FPCMov<X86_COND_P>;
|
|
defm CMOVNB : FPCMov<X86_COND_AE>;
|
|
defm CMOVNBE: FPCMov<X86_COND_A>;
|
|
defm CMOVNE : FPCMov<X86_COND_NE>;
|
|
defm CMOVNP : FPCMov<X86_COND_NP>;
|
|
} // Uses = [EFLAGS], Constraints = "$src1 = $dst"
|
|
|
|
let Predicates = [HasCMov] in {
|
|
// These are not factored because there's no clean way to pass DA/DB.
|
|
def CMOVB_F : FPI<0xDA, MRM0r, (outs RST:$op), (ins),
|
|
"fcmovb\t{$op, %st(0)|st(0), $op}">;
|
|
def CMOVBE_F : FPI<0xDA, MRM2r, (outs RST:$op), (ins),
|
|
"fcmovbe\t{$op, %st(0)|st(0), $op}">;
|
|
def CMOVE_F : FPI<0xDA, MRM1r, (outs RST:$op), (ins),
|
|
"fcmove\t{$op, %st(0)|st(0), $op}">;
|
|
def CMOVP_F : FPI<0xDA, MRM3r, (outs RST:$op), (ins),
|
|
"fcmovu\t{$op, %st(0)|st(0), $op}">;
|
|
def CMOVNB_F : FPI<0xDB, MRM0r, (outs RST:$op), (ins),
|
|
"fcmovnb\t{$op, %st(0)|st(0), $op}">;
|
|
def CMOVNBE_F: FPI<0xDB, MRM2r, (outs RST:$op), (ins),
|
|
"fcmovnbe\t{$op, %st(0)|st(0), $op}">;
|
|
def CMOVNE_F : FPI<0xDB, MRM1r, (outs RST:$op), (ins),
|
|
"fcmovne\t{$op, %st(0)|st(0), $op}">;
|
|
def CMOVNP_F : FPI<0xDB, MRM3r, (outs RST:$op), (ins),
|
|
"fcmovnu\t{$op, %st(0)|st(0), $op}">;
|
|
} // Predicates = [HasCMov]
|
|
|
|
// Floating point loads & stores.
|
|
let canFoldAsLoad = 1 in {
|
|
def LD_Fp32m : FpIf32<(outs RFP32:$dst), (ins f32mem:$src), ZeroArgFP,
|
|
[(set RFP32:$dst, (loadf32 addr:$src))]>;
|
|
let isReMaterializable = 1 in
|
|
def LD_Fp64m : FpIf64<(outs RFP64:$dst), (ins f64mem:$src), ZeroArgFP,
|
|
[(set RFP64:$dst, (loadf64 addr:$src))]>;
|
|
def LD_Fp80m : FpI_<(outs RFP80:$dst), (ins f80mem:$src), ZeroArgFP,
|
|
[(set RFP80:$dst, (loadf80 addr:$src))]>;
|
|
}
|
|
def LD_Fp32m64 : FpIf64<(outs RFP64:$dst), (ins f32mem:$src), ZeroArgFP,
|
|
[(set RFP64:$dst, (f64 (extloadf32 addr:$src)))]>;
|
|
def LD_Fp64m80 : FpI_<(outs RFP80:$dst), (ins f64mem:$src), ZeroArgFP,
|
|
[(set RFP80:$dst, (f80 (extloadf64 addr:$src)))]>;
|
|
def LD_Fp32m80 : FpI_<(outs RFP80:$dst), (ins f32mem:$src), ZeroArgFP,
|
|
[(set RFP80:$dst, (f80 (extloadf32 addr:$src)))]>;
|
|
def ILD_Fp16m32: FpIf32<(outs RFP32:$dst), (ins i16mem:$src), ZeroArgFP,
|
|
[(set RFP32:$dst, (X86fild addr:$src, i16))]>;
|
|
def ILD_Fp32m32: FpIf32<(outs RFP32:$dst), (ins i32mem:$src), ZeroArgFP,
|
|
[(set RFP32:$dst, (X86fild addr:$src, i32))]>;
|
|
def ILD_Fp64m32: FpIf32<(outs RFP32:$dst), (ins i64mem:$src), ZeroArgFP,
|
|
[(set RFP32:$dst, (X86fild addr:$src, i64))]>;
|
|
def ILD_Fp16m64: FpIf64<(outs RFP64:$dst), (ins i16mem:$src), ZeroArgFP,
|
|
[(set RFP64:$dst, (X86fild addr:$src, i16))]>;
|
|
def ILD_Fp32m64: FpIf64<(outs RFP64:$dst), (ins i32mem:$src), ZeroArgFP,
|
|
[(set RFP64:$dst, (X86fild addr:$src, i32))]>;
|
|
def ILD_Fp64m64: FpIf64<(outs RFP64:$dst), (ins i64mem:$src), ZeroArgFP,
|
|
[(set RFP64:$dst, (X86fild addr:$src, i64))]>;
|
|
def ILD_Fp16m80: FpI_<(outs RFP80:$dst), (ins i16mem:$src), ZeroArgFP,
|
|
[(set RFP80:$dst, (X86fild addr:$src, i16))]>;
|
|
def ILD_Fp32m80: FpI_<(outs RFP80:$dst), (ins i32mem:$src), ZeroArgFP,
|
|
[(set RFP80:$dst, (X86fild addr:$src, i32))]>;
|
|
def ILD_Fp64m80: FpI_<(outs RFP80:$dst), (ins i64mem:$src), ZeroArgFP,
|
|
[(set RFP80:$dst, (X86fild addr:$src, i64))]>;
|
|
|
|
def ST_Fp32m : FpIf32<(outs), (ins f32mem:$op, RFP32:$src), OneArgFP,
|
|
[(store RFP32:$src, addr:$op)]>;
|
|
def ST_Fp64m32 : FpIf64<(outs), (ins f32mem:$op, RFP64:$src), OneArgFP,
|
|
[(truncstoref32 RFP64:$src, addr:$op)]>;
|
|
def ST_Fp64m : FpIf64<(outs), (ins f64mem:$op, RFP64:$src), OneArgFP,
|
|
[(store RFP64:$src, addr:$op)]>;
|
|
def ST_Fp80m32 : FpI_<(outs), (ins f32mem:$op, RFP80:$src), OneArgFP,
|
|
[(truncstoref32 RFP80:$src, addr:$op)]>;
|
|
def ST_Fp80m64 : FpI_<(outs), (ins f64mem:$op, RFP80:$src), OneArgFP,
|
|
[(truncstoref64 RFP80:$src, addr:$op)]>;
|
|
// FST does not support 80-bit memory target; FSTP must be used.
|
|
|
|
let mayStore = 1, neverHasSideEffects = 1 in {
|
|
def ST_FpP32m : FpIf32<(outs), (ins f32mem:$op, RFP32:$src), OneArgFP, []>;
|
|
def ST_FpP64m32 : FpIf64<(outs), (ins f32mem:$op, RFP64:$src), OneArgFP, []>;
|
|
def ST_FpP64m : FpIf64<(outs), (ins f64mem:$op, RFP64:$src), OneArgFP, []>;
|
|
def ST_FpP80m32 : FpI_<(outs), (ins f32mem:$op, RFP80:$src), OneArgFP, []>;
|
|
def ST_FpP80m64 : FpI_<(outs), (ins f64mem:$op, RFP80:$src), OneArgFP, []>;
|
|
}
|
|
def ST_FpP80m : FpI_<(outs), (ins f80mem:$op, RFP80:$src), OneArgFP,
|
|
[(store RFP80:$src, addr:$op)]>;
|
|
let mayStore = 1, neverHasSideEffects = 1 in {
|
|
def IST_Fp16m32 : FpIf32<(outs), (ins i16mem:$op, RFP32:$src), OneArgFP, []>;
|
|
def IST_Fp32m32 : FpIf32<(outs), (ins i32mem:$op, RFP32:$src), OneArgFP, []>;
|
|
def IST_Fp64m32 : FpIf32<(outs), (ins i64mem:$op, RFP32:$src), OneArgFP, []>;
|
|
def IST_Fp16m64 : FpIf64<(outs), (ins i16mem:$op, RFP64:$src), OneArgFP, []>;
|
|
def IST_Fp32m64 : FpIf64<(outs), (ins i32mem:$op, RFP64:$src), OneArgFP, []>;
|
|
def IST_Fp64m64 : FpIf64<(outs), (ins i64mem:$op, RFP64:$src), OneArgFP, []>;
|
|
def IST_Fp16m80 : FpI_<(outs), (ins i16mem:$op, RFP80:$src), OneArgFP, []>;
|
|
def IST_Fp32m80 : FpI_<(outs), (ins i32mem:$op, RFP80:$src), OneArgFP, []>;
|
|
def IST_Fp64m80 : FpI_<(outs), (ins i64mem:$op, RFP80:$src), OneArgFP, []>;
|
|
}
|
|
|
|
let mayLoad = 1, SchedRW = [WriteLoad] in {
|
|
def LD_F32m : FPI<0xD9, MRM0m, (outs), (ins f32mem:$src), "fld{s}\t$src",
|
|
IIC_FLD>;
|
|
def LD_F64m : FPI<0xDD, MRM0m, (outs), (ins f64mem:$src), "fld{l}\t$src",
|
|
IIC_FLD>;
|
|
def LD_F80m : FPI<0xDB, MRM5m, (outs), (ins f80mem:$src), "fld{t}\t$src",
|
|
IIC_FLD80>;
|
|
def ILD_F16m : FPI<0xDF, MRM0m, (outs), (ins i16mem:$src), "fild{s}\t$src",
|
|
IIC_FILD>;
|
|
def ILD_F32m : FPI<0xDB, MRM0m, (outs), (ins i32mem:$src), "fild{l}\t$src",
|
|
IIC_FILD>;
|
|
def ILD_F64m : FPI<0xDF, MRM5m, (outs), (ins i64mem:$src), "fild{ll}\t$src",
|
|
IIC_FILD>;
|
|
}
|
|
let mayStore = 1, SchedRW = [WriteStore] in {
|
|
def ST_F32m : FPI<0xD9, MRM2m, (outs), (ins f32mem:$dst), "fst{s}\t$dst",
|
|
IIC_FST>;
|
|
def ST_F64m : FPI<0xDD, MRM2m, (outs), (ins f64mem:$dst), "fst{l}\t$dst",
|
|
IIC_FST>;
|
|
def ST_FP32m : FPI<0xD9, MRM3m, (outs), (ins f32mem:$dst), "fstp{s}\t$dst",
|
|
IIC_FST>;
|
|
def ST_FP64m : FPI<0xDD, MRM3m, (outs), (ins f64mem:$dst), "fstp{l}\t$dst",
|
|
IIC_FST>;
|
|
def ST_FP80m : FPI<0xDB, MRM7m, (outs), (ins f80mem:$dst), "fstp{t}\t$dst",
|
|
IIC_FST80>;
|
|
def IST_F16m : FPI<0xDF, MRM2m, (outs), (ins i16mem:$dst), "fist{s}\t$dst",
|
|
IIC_FIST>;
|
|
def IST_F32m : FPI<0xDB, MRM2m, (outs), (ins i32mem:$dst), "fist{l}\t$dst",
|
|
IIC_FIST>;
|
|
def IST_FP16m : FPI<0xDF, MRM3m, (outs), (ins i16mem:$dst), "fistp{s}\t$dst",
|
|
IIC_FIST>;
|
|
def IST_FP32m : FPI<0xDB, MRM3m, (outs), (ins i32mem:$dst), "fistp{l}\t$dst",
|
|
IIC_FIST>;
|
|
def IST_FP64m : FPI<0xDF, MRM7m, (outs), (ins i64mem:$dst), "fistp{ll}\t$dst",
|
|
IIC_FIST>;
|
|
}
|
|
|
|
// FISTTP requires SSE3 even though it's a FPStack op.
|
|
let Predicates = [HasSSE3] in {
|
|
def ISTT_Fp16m32 : FpI_<(outs), (ins i16mem:$op, RFP32:$src), OneArgFP,
|
|
[(X86fp_to_i16mem RFP32:$src, addr:$op)]>;
|
|
def ISTT_Fp32m32 : FpI_<(outs), (ins i32mem:$op, RFP32:$src), OneArgFP,
|
|
[(X86fp_to_i32mem RFP32:$src, addr:$op)]>;
|
|
def ISTT_Fp64m32 : FpI_<(outs), (ins i64mem:$op, RFP32:$src), OneArgFP,
|
|
[(X86fp_to_i64mem RFP32:$src, addr:$op)]>;
|
|
def ISTT_Fp16m64 : FpI_<(outs), (ins i16mem:$op, RFP64:$src), OneArgFP,
|
|
[(X86fp_to_i16mem RFP64:$src, addr:$op)]>;
|
|
def ISTT_Fp32m64 : FpI_<(outs), (ins i32mem:$op, RFP64:$src), OneArgFP,
|
|
[(X86fp_to_i32mem RFP64:$src, addr:$op)]>;
|
|
def ISTT_Fp64m64 : FpI_<(outs), (ins i64mem:$op, RFP64:$src), OneArgFP,
|
|
[(X86fp_to_i64mem RFP64:$src, addr:$op)]>;
|
|
def ISTT_Fp16m80 : FpI_<(outs), (ins i16mem:$op, RFP80:$src), OneArgFP,
|
|
[(X86fp_to_i16mem RFP80:$src, addr:$op)]>;
|
|
def ISTT_Fp32m80 : FpI_<(outs), (ins i32mem:$op, RFP80:$src), OneArgFP,
|
|
[(X86fp_to_i32mem RFP80:$src, addr:$op)]>;
|
|
def ISTT_Fp64m80 : FpI_<(outs), (ins i64mem:$op, RFP80:$src), OneArgFP,
|
|
[(X86fp_to_i64mem RFP80:$src, addr:$op)]>;
|
|
} // Predicates = [HasSSE3]
|
|
|
|
let mayStore = 1, SchedRW = [WriteStore] in {
|
|
def ISTT_FP16m : FPI<0xDF, MRM1m, (outs), (ins i16mem:$dst), "fisttp{s}\t$dst",
|
|
IIC_FST>;
|
|
def ISTT_FP32m : FPI<0xDB, MRM1m, (outs), (ins i32mem:$dst), "fisttp{l}\t$dst",
|
|
IIC_FST>;
|
|
def ISTT_FP64m : FPI<0xDD, MRM1m, (outs), (ins i64mem:$dst),
|
|
"fisttp{ll}\t$dst", IIC_FST>;
|
|
}
|
|
|
|
// FP Stack manipulation instructions.
|
|
let SchedRW = [WriteMove] in {
|
|
def LD_Frr : FPI<0xD9, MRM0r, (outs), (ins RST:$op), "fld\t$op", IIC_FLD>;
|
|
def ST_Frr : FPI<0xDD, MRM2r, (outs), (ins RST:$op), "fst\t$op", IIC_FST>;
|
|
def ST_FPrr : FPI<0xDD, MRM3r, (outs), (ins RST:$op), "fstp\t$op", IIC_FST>;
|
|
def XCH_F : FPI<0xD9, MRM1r, (outs), (ins RST:$op), "fxch\t$op", IIC_FXCH>;
|
|
}
|
|
|
|
// Floating point constant loads.
|
|
let isReMaterializable = 1 in {
|
|
def LD_Fp032 : FpIf32<(outs RFP32:$dst), (ins), ZeroArgFP,
|
|
[(set RFP32:$dst, fpimm0)]>;
|
|
def LD_Fp132 : FpIf32<(outs RFP32:$dst), (ins), ZeroArgFP,
|
|
[(set RFP32:$dst, fpimm1)]>;
|
|
def LD_Fp064 : FpIf64<(outs RFP64:$dst), (ins), ZeroArgFP,
|
|
[(set RFP64:$dst, fpimm0)]>;
|
|
def LD_Fp164 : FpIf64<(outs RFP64:$dst), (ins), ZeroArgFP,
|
|
[(set RFP64:$dst, fpimm1)]>;
|
|
def LD_Fp080 : FpI_<(outs RFP80:$dst), (ins), ZeroArgFP,
|
|
[(set RFP80:$dst, fpimm0)]>;
|
|
def LD_Fp180 : FpI_<(outs RFP80:$dst), (ins), ZeroArgFP,
|
|
[(set RFP80:$dst, fpimm1)]>;
|
|
}
|
|
|
|
let SchedRW = [WriteZero] in {
|
|
def LD_F0 : FPI<0xEE, RawFrm, (outs), (ins), "fldz", IIC_FLDZ>, D9;
|
|
def LD_F1 : FPI<0xE8, RawFrm, (outs), (ins), "fld1", IIC_FIST>, D9;
|
|
}
|
|
|
|
// Floating point compares.
|
|
let SchedRW = [WriteFAdd] in {
|
|
def UCOM_Fpr32 : FpIf32<(outs), (ins RFP32:$lhs, RFP32:$rhs), CompareFP,
|
|
[(set FPSW, (trunc (X86cmp RFP32:$lhs, RFP32:$rhs)))]>;
|
|
def UCOM_Fpr64 : FpIf64<(outs), (ins RFP64:$lhs, RFP64:$rhs), CompareFP,
|
|
[(set FPSW, (trunc (X86cmp RFP64:$lhs, RFP64:$rhs)))]>;
|
|
def UCOM_Fpr80 : FpI_ <(outs), (ins RFP80:$lhs, RFP80:$rhs), CompareFP,
|
|
[(set FPSW, (trunc (X86cmp RFP80:$lhs, RFP80:$rhs)))]>;
|
|
} // SchedRW
|
|
} // Defs = [FPSW]
|
|
|
|
let SchedRW = [WriteFAdd] in {
|
|
// CC = ST(0) cmp ST(i)
|
|
let Defs = [EFLAGS, FPSW] in {
|
|
def UCOM_FpIr32: FpIf32<(outs), (ins RFP32:$lhs, RFP32:$rhs), CompareFP,
|
|
[(set EFLAGS, (X86cmp RFP32:$lhs, RFP32:$rhs))]>;
|
|
def UCOM_FpIr64: FpIf64<(outs), (ins RFP64:$lhs, RFP64:$rhs), CompareFP,
|
|
[(set EFLAGS, (X86cmp RFP64:$lhs, RFP64:$rhs))]>;
|
|
def UCOM_FpIr80: FpI_<(outs), (ins RFP80:$lhs, RFP80:$rhs), CompareFP,
|
|
[(set EFLAGS, (X86cmp RFP80:$lhs, RFP80:$rhs))]>;
|
|
}
|
|
|
|
let Defs = [FPSW], Uses = [ST0] in {
|
|
def UCOM_Fr : FPI<0xDD, MRM4r, // FPSW = cmp ST(0) with ST(i)
|
|
(outs), (ins RST:$reg), "fucom\t$reg", IIC_FUCOM>;
|
|
def UCOM_FPr : FPI<0xDD, MRM5r, // FPSW = cmp ST(0) with ST(i), pop
|
|
(outs), (ins RST:$reg), "fucomp\t$reg", IIC_FUCOM>;
|
|
def UCOM_FPPr : FPI<0xE9, RawFrm, // cmp ST(0) with ST(1), pop, pop
|
|
(outs), (ins), "fucompp", IIC_FUCOM>, DA;
|
|
}
|
|
|
|
let Defs = [EFLAGS, FPSW], Uses = [ST0] in {
|
|
def UCOM_FIr : FPI<0xDB, MRM5r, // CC = cmp ST(0) with ST(i)
|
|
(outs), (ins RST:$reg), "fucomi\t$reg", IIC_FUCOMI>;
|
|
def UCOM_FIPr : FPI<0xDF, MRM5r, // CC = cmp ST(0) with ST(i), pop
|
|
(outs), (ins RST:$reg), "fucompi\t$reg", IIC_FUCOMI>;
|
|
}
|
|
|
|
let Defs = [EFLAGS, FPSW] in {
|
|
def COM_FIr : FPI<0xDB, MRM6r, (outs), (ins RST:$reg),
|
|
"fcomi\t$reg", IIC_FCOMI>;
|
|
def COM_FIPr : FPI<0xDF, MRM6r, (outs), (ins RST:$reg),
|
|
"fcompi\t$reg", IIC_FCOMI>;
|
|
}
|
|
} // SchedRW
|
|
|
|
// Floating point flag ops.
|
|
let SchedRW = [WriteALU] in {
|
|
let Defs = [AX], Uses = [FPSW] in
|
|
def FNSTSW16r : I<0xE0, RawFrm, // AX = fp flags
|
|
(outs), (ins), "fnstsw\t{%ax|ax}",
|
|
[(set AX, (X86fp_stsw FPSW))], IIC_FNSTSW>, DF;
|
|
|
|
def FNSTCW16m : I<0xD9, MRM7m, // [mem16] = X87 control world
|
|
(outs), (ins i16mem:$dst), "fnstcw\t$dst",
|
|
[(X86fp_cwd_get16 addr:$dst)], IIC_FNSTCW>;
|
|
} // SchedRW
|
|
let mayLoad = 1 in
|
|
def FLDCW16m : I<0xD9, MRM5m, // X87 control world = [mem16]
|
|
(outs), (ins i16mem:$dst), "fldcw\t$dst", [], IIC_FLDCW>,
|
|
Sched<[WriteLoad]>;
|
|
|
|
// FPU control instructions
|
|
let SchedRW = [WriteMicrocoded] in {
|
|
let Defs = [FPSW] in
|
|
def FNINIT : I<0xE3, RawFrm, (outs), (ins), "fninit", [], IIC_FNINIT>, DB;
|
|
def FFREE : FPI<0xDD, MRM0r, (outs), (ins RST:$reg),
|
|
"ffree\t$reg", IIC_FFREE>;
|
|
// Clear exceptions
|
|
|
|
let Defs = [FPSW] in
|
|
def FNCLEX : I<0xE2, RawFrm, (outs), (ins), "fnclex", [], IIC_FNCLEX>, DB;
|
|
} // SchedRW
|
|
|
|
// Operandless floating-point instructions for the disassembler.
|
|
let SchedRW = [WriteMicrocoded] in {
|
|
def WAIT : I<0x9B, RawFrm, (outs), (ins), "wait", [], IIC_WAIT>;
|
|
|
|
def FNOP : I<0xD0, RawFrm, (outs), (ins), "fnop", [], IIC_FNOP>, D9;
|
|
def FXAM : I<0xE5, RawFrm, (outs), (ins), "fxam", [], IIC_FXAM>, D9;
|
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def FLDL2T : I<0xE9, RawFrm, (outs), (ins), "fldl2t", [], IIC_FLDL>, D9;
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def FLDL2E : I<0xEA, RawFrm, (outs), (ins), "fldl2e", [], IIC_FLDL>, D9;
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def FLDPI : I<0xEB, RawFrm, (outs), (ins), "fldpi", [], IIC_FLDL>, D9;
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def FLDLG2 : I<0xEC, RawFrm, (outs), (ins), "fldlg2", [], IIC_FLDL>, D9;
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def FLDLN2 : I<0xED, RawFrm, (outs), (ins), "fldln2", [], IIC_FLDL>, D9;
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def F2XM1 : I<0xF0, RawFrm, (outs), (ins), "f2xm1", [], IIC_F2XM1>, D9;
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def FYL2X : I<0xF1, RawFrm, (outs), (ins), "fyl2x", [], IIC_FYL2X>, D9;
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def FPTAN : I<0xF2, RawFrm, (outs), (ins), "fptan", [], IIC_FPTAN>, D9;
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def FPATAN : I<0xF3, RawFrm, (outs), (ins), "fpatan", [], IIC_FPATAN>, D9;
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def FXTRACT : I<0xF4, RawFrm, (outs), (ins), "fxtract", [], IIC_FXTRACT>, D9;
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def FPREM1 : I<0xF5, RawFrm, (outs), (ins), "fprem1", [], IIC_FPREM1>, D9;
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def FDECSTP : I<0xF6, RawFrm, (outs), (ins), "fdecstp", [], IIC_FPSTP>, D9;
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def FINCSTP : I<0xF7, RawFrm, (outs), (ins), "fincstp", [], IIC_FPSTP>, D9;
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def FPREM : I<0xF8, RawFrm, (outs), (ins), "fprem", [], IIC_FPREM>, D9;
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def FYL2XP1 : I<0xF9, RawFrm, (outs), (ins), "fyl2xp1", [], IIC_FYL2XP1>, D9;
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def FSINCOS : I<0xFB, RawFrm, (outs), (ins), "fsincos", [], IIC_FSINCOS>, D9;
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def FRNDINT : I<0xFC, RawFrm, (outs), (ins), "frndint", [], IIC_FRNDINT>, D9;
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def FSCALE : I<0xFD, RawFrm, (outs), (ins), "fscale", [], IIC_FSCALE>, D9;
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def FCOMPP : I<0xD9, RawFrm, (outs), (ins), "fcompp", [], IIC_FCOMPP>, DE;
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def FXSAVE : I<0xAE, MRM0m, (outs opaque512mem:$dst), (ins),
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"fxsave\t$dst", [], IIC_FXSAVE>, TB;
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def FXSAVE64 : I<0xAE, MRM0m, (outs opaque512mem:$dst), (ins),
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"fxsaveq\t$dst", [], IIC_FXSAVE>, TB, REX_W,
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Requires<[In64BitMode]>;
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def FXRSTOR : I<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
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"fxrstor\t$src", [], IIC_FXRSTOR>, TB;
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def FXRSTOR64 : I<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
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"fxrstorq\t$src", [], IIC_FXRSTOR>, TB, REX_W,
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Requires<[In64BitMode]>;
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} // SchedRW
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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 / f80 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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def : Pat<(X86fld addr:$src, f80), (LD_Fp80m addr:$src)>;
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// Required for CALL which return f32 / f64 / f80 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:$op,
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RFP64:$src)>;
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def : Pat<(X86fst RFP64:$src, addr:$op, f64), (ST_Fp64m addr:$op, RFP64:$src)>;
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def : Pat<(X86fst RFP80:$src, addr:$op, f32), (ST_Fp80m32 addr:$op,
|
|
RFP80:$src)>;
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|
def : Pat<(X86fst RFP80:$src, addr:$op, f64), (ST_Fp80m64 addr:$op,
|
|
RFP80:$src)>;
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|
def : Pat<(X86fst RFP80:$src, addr:$op, f80), (ST_FpP80m addr:$op,
|
|
RFP80:$src)>;
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|
|
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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<[FPStackf32]>;
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def : Pat<(f32 fpimmneg1), (CHS_Fp32 (LD_Fp132))>, Requires<[FPStackf32]>;
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|
def : Pat<(f64 fpimmneg0), (CHS_Fp64 (LD_Fp064))>, Requires<[FPStackf64]>;
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|
def : Pat<(f64 fpimmneg1), (CHS_Fp64 (LD_Fp164))>, Requires<[FPStackf64]>;
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|
def : Pat<(f80 fpimmneg0), (CHS_Fp80 (LD_Fp080))>;
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|
def : Pat<(f80 fpimmneg1), (CHS_Fp80 (LD_Fp180))>;
|
|
|
|
// Used to conv. i64 to f64 since there isn't a SSE version.
|
|
def : Pat<(X86fildflag addr:$src, i64), (ILD_Fp64m64 addr:$src)>;
|
|
|
|
// FP extensions map onto simple pseudo-value conversions if they are to/from
|
|
// the FP stack.
|
|
def : Pat<(f64 (fextend RFP32:$src)), (COPY_TO_REGCLASS RFP32:$src, RFP64)>,
|
|
Requires<[FPStackf32]>;
|
|
def : Pat<(f80 (fextend RFP32:$src)), (COPY_TO_REGCLASS RFP32:$src, RFP80)>,
|
|
Requires<[FPStackf32]>;
|
|
def : Pat<(f80 (fextend RFP64:$src)), (COPY_TO_REGCLASS RFP64:$src, RFP80)>,
|
|
Requires<[FPStackf64]>;
|
|
|
|
// FP truncations map onto simple pseudo-value conversions if they are to/from
|
|
// the FP stack. We have validated that only value-preserving truncations make
|
|
// it through isel.
|
|
def : Pat<(f32 (fround RFP64:$src)), (COPY_TO_REGCLASS RFP64:$src, RFP32)>,
|
|
Requires<[FPStackf32]>;
|
|
def : Pat<(f32 (fround RFP80:$src)), (COPY_TO_REGCLASS RFP80:$src, RFP32)>,
|
|
Requires<[FPStackf32]>;
|
|
def : Pat<(f64 (fround RFP80:$src)), (COPY_TO_REGCLASS RFP80:$src, RFP64)>,
|
|
Requires<[FPStackf64]>;
|