aboutsummaryrefslogtreecommitdiff
path: root/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVInstrInfoF.td
blob: 4529949f693e00f17e01fd63768290e47ab29d74 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
//===-- RISCVInstrInfoF.td - RISC-V 'F' instructions -------*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file describes the RISC-V instructions from the standard 'F',
// Single-Precision Floating-Point instruction set extension.
//
//===----------------------------------------------------------------------===//

//===----------------------------------------------------------------------===//
// RISC-V specific DAG Nodes.
//===----------------------------------------------------------------------===//

def SDT_RISCVFMV_W_X_RV64
    : SDTypeProfile<1, 1, [SDTCisVT<0, f32>, SDTCisVT<1, i64>]>;
def SDT_RISCVFMV_X_ANYEXTW_RV64
    : SDTypeProfile<1, 1, [SDTCisVT<0, i64>, SDTCisVT<1, f32>]>;

def riscv_fmv_w_x_rv64
    : SDNode<"RISCVISD::FMV_W_X_RV64", SDT_RISCVFMV_W_X_RV64>;
def riscv_fmv_x_anyextw_rv64
    : SDNode<"RISCVISD::FMV_X_ANYEXTW_RV64", SDT_RISCVFMV_X_ANYEXTW_RV64>;

//===----------------------------------------------------------------------===//
// Operand and SDNode transformation definitions.
//===----------------------------------------------------------------------===//

// Floating-point rounding mode

def FRMArg : AsmOperandClass {
  let Name = "FRMArg";
  let RenderMethod = "addFRMArgOperands";
  let DiagnosticType = "InvalidFRMArg";
}

def frmarg : Operand<XLenVT> {
  let ParserMatchClass = FRMArg;
  let PrintMethod = "printFRMArg";
  let DecoderMethod = "decodeFRMArg";
}

//===----------------------------------------------------------------------===//
// Instruction class templates
//===----------------------------------------------------------------------===//

let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
class FPFMAS_rrr_frm<RISCVOpcode opcode, string opcodestr>
    : RVInstR4<0b00, opcode, (outs FPR32:$rd),
               (ins FPR32:$rs1, FPR32:$rs2, FPR32:$rs3, frmarg:$funct3),
                opcodestr, "$rd, $rs1, $rs2, $rs3, $funct3">;

class FPFMASDynFrmAlias<FPFMAS_rrr_frm Inst, string OpcodeStr>
    : InstAlias<OpcodeStr#" $rd, $rs1, $rs2, $rs3",
                (Inst FPR32:$rd, FPR32:$rs1, FPR32:$rs2, FPR32:$rs3, 0b111)>;

let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
class FPALUS_rr<bits<7> funct7, bits<3> funct3, string opcodestr>
    : RVInstR<funct7, funct3, OPC_OP_FP, (outs FPR32:$rd),
              (ins FPR32:$rs1, FPR32:$rs2), opcodestr, "$rd, $rs1, $rs2">;

let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
class FPALUS_rr_frm<bits<7> funct7, string opcodestr>
    : RVInstRFrm<funct7, OPC_OP_FP, (outs FPR32:$rd),
                 (ins FPR32:$rs1, FPR32:$rs2, frmarg:$funct3), opcodestr,
                  "$rd, $rs1, $rs2, $funct3">;

class FPALUSDynFrmAlias<FPALUS_rr_frm Inst, string OpcodeStr>
    : InstAlias<OpcodeStr#" $rd, $rs1, $rs2",
                (Inst FPR32:$rd, FPR32:$rs1, FPR32:$rs2, 0b111)>;

let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
class FPUnaryOp_r<bits<7> funct7, bits<3> funct3, RegisterClass rdty,
                RegisterClass rs1ty, string opcodestr>
    : RVInstR<funct7, funct3, OPC_OP_FP, (outs rdty:$rd), (ins rs1ty:$rs1),
              opcodestr, "$rd, $rs1">;

let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
class FPUnaryOp_r_frm<bits<7> funct7, RegisterClass rdty, RegisterClass rs1ty,
                      string opcodestr>
    : RVInstRFrm<funct7, OPC_OP_FP, (outs rdty:$rd),
                 (ins rs1ty:$rs1, frmarg:$funct3), opcodestr,
                  "$rd, $rs1, $funct3">;

class FPUnaryOpDynFrmAlias<FPUnaryOp_r_frm Inst, string OpcodeStr,
                           RegisterClass rdty, RegisterClass rs1ty>
    : InstAlias<OpcodeStr#" $rd, $rs1",
                (Inst rdty:$rd, rs1ty:$rs1, 0b111)>;

let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
class FPCmpS_rr<bits<3> funct3, string opcodestr>
    : RVInstR<0b1010000, funct3, OPC_OP_FP, (outs GPR:$rd),
              (ins FPR32:$rs1, FPR32:$rs2), opcodestr, "$rd, $rs1, $rs2">,
      Sched<[WriteFCmp32, ReadFCmp32, ReadFCmp32]>;

//===----------------------------------------------------------------------===//
// Instructions
//===----------------------------------------------------------------------===//

let Predicates = [HasStdExtF] in {
let hasSideEffects = 0, mayLoad = 1, mayStore = 0 in
def FLW : RVInstI<0b010, OPC_LOAD_FP, (outs FPR32:$rd),
                  (ins GPR:$rs1, simm12:$imm12),
                   "flw", "$rd, ${imm12}(${rs1})">,
          Sched<[WriteFLD32, ReadFMemBase]>;

// Operands for stores are in the order srcreg, base, offset rather than
// reflecting the order these fields are specified in the instruction
// encoding.
let hasSideEffects = 0, mayLoad = 0, mayStore = 1 in
def FSW : RVInstS<0b010, OPC_STORE_FP, (outs),
                  (ins FPR32:$rs2, GPR:$rs1, simm12:$imm12),
                   "fsw", "$rs2, ${imm12}(${rs1})">,
          Sched<[WriteFST32, ReadStoreData, ReadFMemBase]>;

def FMADD_S  : FPFMAS_rrr_frm<OPC_MADD, "fmadd.s">,
               Sched<[WriteFMulAdd32, ReadFMulAdd32, ReadFMulAdd32, ReadFMulAdd32]>;
def          : FPFMASDynFrmAlias<FMADD_S, "fmadd.s">;
def FMSUB_S  : FPFMAS_rrr_frm<OPC_MSUB, "fmsub.s">,
               Sched<[WriteFMulSub32, ReadFMulSub32, ReadFMulSub32, ReadFMulSub32]>;
def          : FPFMASDynFrmAlias<FMSUB_S, "fmsub.s">;
def FNMSUB_S : FPFMAS_rrr_frm<OPC_NMSUB, "fnmsub.s">,
               Sched<[WriteFMulSub32, ReadFMulSub32, ReadFMulSub32, ReadFMulSub32]>;
def          : FPFMASDynFrmAlias<FNMSUB_S, "fnmsub.s">;
def FNMADD_S : FPFMAS_rrr_frm<OPC_NMADD, "fnmadd.s">,
               Sched<[WriteFMulAdd32, ReadFMulAdd32, ReadFMulAdd32, ReadFMulAdd32]>;
def          : FPFMASDynFrmAlias<FNMADD_S, "fnmadd.s">;

def FADD_S : FPALUS_rr_frm<0b0000000, "fadd.s">,
             Sched<[WriteFALU32, ReadFALU32, ReadFALU32]>;
def        : FPALUSDynFrmAlias<FADD_S, "fadd.s">;
def FSUB_S : FPALUS_rr_frm<0b0000100, "fsub.s">,
             Sched<[WriteFALU32, ReadFALU32, ReadFALU32]>;
def        : FPALUSDynFrmAlias<FSUB_S, "fsub.s">;
def FMUL_S : FPALUS_rr_frm<0b0001000, "fmul.s">,
             Sched<[WriteFMul32, ReadFMul32, ReadFMul32]>;
def        : FPALUSDynFrmAlias<FMUL_S, "fmul.s">;
def FDIV_S : FPALUS_rr_frm<0b0001100, "fdiv.s">,
             Sched<[WriteFDiv32, ReadFDiv32, ReadFDiv32]>;
def        : FPALUSDynFrmAlias<FDIV_S, "fdiv.s">;

def FSQRT_S : FPUnaryOp_r_frm<0b0101100, FPR32, FPR32, "fsqrt.s">,
              Sched<[WriteFSqrt32, ReadFSqrt32]> {
  let rs2 = 0b00000;
}
def         : FPUnaryOpDynFrmAlias<FSQRT_S, "fsqrt.s", FPR32, FPR32>;

def FSGNJ_S  : FPALUS_rr<0b0010000, 0b000, "fsgnj.s">,
               Sched<[WriteFSGNJ32, ReadFSGNJ32, ReadFSGNJ32]>;
def FSGNJN_S : FPALUS_rr<0b0010000, 0b001, "fsgnjn.s">,
               Sched<[WriteFSGNJ32, ReadFSGNJ32, ReadFSGNJ32]>;
def FSGNJX_S : FPALUS_rr<0b0010000, 0b010, "fsgnjx.s">,
               Sched<[WriteFSGNJ32, ReadFSGNJ32, ReadFSGNJ32]>;
def FMIN_S   : FPALUS_rr<0b0010100, 0b000, "fmin.s">,
               Sched<[WriteFMinMax32, ReadFMinMax32, ReadFMinMax32]>;
def FMAX_S   : FPALUS_rr<0b0010100, 0b001, "fmax.s">,
               Sched<[WriteFMinMax32, ReadFMinMax32, ReadFMinMax32]>;

def FCVT_W_S : FPUnaryOp_r_frm<0b1100000, GPR, FPR32, "fcvt.w.s">,
               Sched<[WriteFCvtF32ToI32, ReadFCvtF32ToI32]> {
  let rs2 = 0b00000;
}
def          : FPUnaryOpDynFrmAlias<FCVT_W_S, "fcvt.w.s", GPR, FPR32>;

def FCVT_WU_S : FPUnaryOp_r_frm<0b1100000, GPR, FPR32, "fcvt.wu.s">,
                Sched<[WriteFCvtF32ToI32, ReadFCvtF32ToI32]> {
  let rs2 = 0b00001;
}
def           : FPUnaryOpDynFrmAlias<FCVT_WU_S, "fcvt.wu.s", GPR, FPR32>;

def FMV_X_W : FPUnaryOp_r<0b1110000, 0b000, GPR, FPR32, "fmv.x.w">,
              Sched<[WriteFMovF32ToI32, ReadFMovF32ToI32]> {
  let rs2 = 0b00000;
}

def FEQ_S : FPCmpS_rr<0b010, "feq.s">;
def FLT_S : FPCmpS_rr<0b001, "flt.s">;
def FLE_S : FPCmpS_rr<0b000, "fle.s">;

def FCLASS_S : FPUnaryOp_r<0b1110000, 0b001, GPR, FPR32, "fclass.s">,
               Sched<[WriteFClass32, ReadFClass32]> {
  let rs2 = 0b00000;
}

def FCVT_S_W : FPUnaryOp_r_frm<0b1101000, FPR32, GPR, "fcvt.s.w">,
               Sched<[WriteFCvtI32ToF32, ReadFCvtI32ToF32]> {
  let rs2 = 0b00000;
}
def          : FPUnaryOpDynFrmAlias<FCVT_S_W, "fcvt.s.w", FPR32, GPR>;

def FCVT_S_WU : FPUnaryOp_r_frm<0b1101000, FPR32, GPR, "fcvt.s.wu">,
                Sched<[WriteFCvtI32ToF32, ReadFCvtI32ToF32]> {
  let rs2 = 0b00001;
}
def           : FPUnaryOpDynFrmAlias<FCVT_S_WU, "fcvt.s.wu", FPR32, GPR>;

def FMV_W_X : FPUnaryOp_r<0b1111000, 0b000, FPR32, GPR, "fmv.w.x">,
              Sched<[WriteFMovI32ToF32, ReadFMovI32ToF32]> {
  let rs2 = 0b00000;
}
} // Predicates = [HasStdExtF]

let Predicates = [HasStdExtF, IsRV64] in {
def FCVT_L_S  : FPUnaryOp_r_frm<0b1100000, GPR, FPR32, "fcvt.l.s">,
                Sched<[WriteFCvtF32ToI64, ReadFCvtF32ToI64]> {
  let rs2 = 0b00010;
}
def           : FPUnaryOpDynFrmAlias<FCVT_L_S, "fcvt.l.s", GPR, FPR32>;

def FCVT_LU_S  : FPUnaryOp_r_frm<0b1100000, GPR, FPR32, "fcvt.lu.s">,
                 Sched<[WriteFCvtF32ToI64, ReadFCvtF32ToI64]> {
  let rs2 = 0b00011;
}
def            : FPUnaryOpDynFrmAlias<FCVT_LU_S, "fcvt.lu.s", GPR, FPR32>;

def FCVT_S_L : FPUnaryOp_r_frm<0b1101000, FPR32, GPR, "fcvt.s.l">,
               Sched<[WriteFCvtI64ToF32, ReadFCvtI64ToF32]> {
  let rs2 = 0b00010;
}
def          : FPUnaryOpDynFrmAlias<FCVT_S_L, "fcvt.s.l", FPR32, GPR>;

def FCVT_S_LU : FPUnaryOp_r_frm<0b1101000, FPR32, GPR, "fcvt.s.lu">,
                Sched<[WriteFCvtI64ToF32, ReadFCvtI64ToF32]> {
  let rs2 = 0b00011;
}
def           : FPUnaryOpDynFrmAlias<FCVT_S_LU, "fcvt.s.lu", FPR32, GPR>;
} // Predicates = [HasStdExtF, IsRV64]

//===----------------------------------------------------------------------===//
// Assembler Pseudo Instructions (User-Level ISA, Version 2.2, Chapter 20)
//===----------------------------------------------------------------------===//

let Predicates = [HasStdExtF] in {
def : InstAlias<"flw $rd, (${rs1})",  (FLW FPR32:$rd,  GPR:$rs1, 0), 0>;
def : InstAlias<"fsw $rs2, (${rs1})", (FSW FPR32:$rs2, GPR:$rs1, 0), 0>;

def : InstAlias<"fmv.s $rd, $rs",  (FSGNJ_S  FPR32:$rd, FPR32:$rs, FPR32:$rs)>;
def : InstAlias<"fabs.s $rd, $rs", (FSGNJX_S FPR32:$rd, FPR32:$rs, FPR32:$rs)>;
def : InstAlias<"fneg.s $rd, $rs", (FSGNJN_S FPR32:$rd, FPR32:$rs, FPR32:$rs)>;

// fgt.s/fge.s are recognised by the GNU assembler but the canonical
// flt.s/fle.s forms will always be printed. Therefore, set a zero weight.
def : InstAlias<"fgt.s $rd, $rs, $rt",
                (FLT_S GPR:$rd, FPR32:$rt, FPR32:$rs), 0>;
def : InstAlias<"fge.s $rd, $rs, $rt",
                (FLE_S GPR:$rd, FPR32:$rt, FPR32:$rs), 0>;

// The following csr instructions actually alias instructions from the base ISA.
// However, it only makes sense to support them when the F extension is enabled.
// NOTE: "frcsr", "frrm", and "frflags" are more specialized version of "csrr".
def : InstAlias<"frcsr $rd",      (CSRRS GPR:$rd, FCSR.Encoding, X0), 2>;
def : InstAlias<"fscsr $rd, $rs", (CSRRW GPR:$rd, FCSR.Encoding, GPR:$rs)>;
def : InstAlias<"fscsr $rs",      (CSRRW      X0, FCSR.Encoding, GPR:$rs), 2>;

// frsr, fssr are obsolete aliases replaced by frcsr, fscsr, so give them
// zero weight.
def : InstAlias<"frsr $rd",       (CSRRS GPR:$rd, FCSR.Encoding, X0), 0>;
def : InstAlias<"fssr $rd, $rs",  (CSRRW GPR:$rd, FCSR.Encoding, GPR:$rs), 0>;
def : InstAlias<"fssr $rs",       (CSRRW      X0, FCSR.Encoding, GPR:$rs), 0>;

def : InstAlias<"frrm $rd",        (CSRRS  GPR:$rd, FRM.Encoding, X0), 2>;
def : InstAlias<"fsrm $rd, $rs",   (CSRRW  GPR:$rd, FRM.Encoding, GPR:$rs)>;
def : InstAlias<"fsrm $rs",        (CSRRW       X0, FRM.Encoding, GPR:$rs), 2>;
def : InstAlias<"fsrmi $rd, $imm", (CSRRWI GPR:$rd, FRM.Encoding, uimm5:$imm)>;
def : InstAlias<"fsrmi $imm",      (CSRRWI      X0, FRM.Encoding, uimm5:$imm), 2>;

def : InstAlias<"frflags $rd",        (CSRRS  GPR:$rd, FFLAGS.Encoding, X0), 2>;
def : InstAlias<"fsflags $rd, $rs",   (CSRRW  GPR:$rd, FFLAGS.Encoding, GPR:$rs)>;
def : InstAlias<"fsflags $rs",        (CSRRW       X0, FFLAGS.Encoding, GPR:$rs), 2>;
def : InstAlias<"fsflagsi $rd, $imm", (CSRRWI GPR:$rd, FFLAGS.Encoding, uimm5:$imm)>;
def : InstAlias<"fsflagsi $imm",      (CSRRWI      X0, FFLAGS.Encoding, uimm5:$imm), 2>;

// fmv.w.x and fmv.x.w were previously known as fmv.s.x and fmv.x.s. Both
// spellings should be supported by standard tools.
def : MnemonicAlias<"fmv.s.x", "fmv.w.x">;
def : MnemonicAlias<"fmv.x.s", "fmv.x.w">;

def PseudoFLW  : PseudoFloatLoad<"flw", FPR32>;
def PseudoFSW  : PseudoStore<"fsw", FPR32>;
} // Predicates = [HasStdExtF]

//===----------------------------------------------------------------------===//
// Pseudo-instructions and codegen patterns
//===----------------------------------------------------------------------===//

/// Floating point constants
def fpimm0 : PatLeaf<(fpimm), [{ return N->isExactlyValue(+0.0); }]>;

/// Generic pattern classes
class PatFpr32Fpr32<SDPatternOperator OpNode, RVInstR Inst>
    : Pat<(OpNode FPR32:$rs1, FPR32:$rs2), (Inst $rs1, $rs2)>;

class PatFpr32Fpr32DynFrm<SDPatternOperator OpNode, RVInstRFrm Inst>
    : Pat<(OpNode FPR32:$rs1, FPR32:$rs2), (Inst $rs1, $rs2, 0b111)>;

let Predicates = [HasStdExtF] in {

/// Float constants
def : Pat<(f32 (fpimm0)), (FMV_W_X X0)>;

/// Float conversion operations

// [u]int32<->float conversion patterns must be gated on IsRV32 or IsRV64, so
// are defined later.

/// Float arithmetic operations

def : PatFpr32Fpr32DynFrm<fadd, FADD_S>;
def : PatFpr32Fpr32DynFrm<fsub, FSUB_S>;
def : PatFpr32Fpr32DynFrm<fmul, FMUL_S>;
def : PatFpr32Fpr32DynFrm<fdiv, FDIV_S>;

def : Pat<(fsqrt FPR32:$rs1), (FSQRT_S FPR32:$rs1, 0b111)>;

def : Pat<(fneg FPR32:$rs1), (FSGNJN_S $rs1, $rs1)>;
def : Pat<(fabs FPR32:$rs1), (FSGNJX_S $rs1, $rs1)>;

def : PatFpr32Fpr32<fcopysign, FSGNJ_S>;
def : Pat<(fcopysign FPR32:$rs1, (fneg FPR32:$rs2)), (FSGNJN_S $rs1, $rs2)>;

// fmadd: rs1 * rs2 + rs3
def : Pat<(fma FPR32:$rs1, FPR32:$rs2, FPR32:$rs3),
          (FMADD_S $rs1, $rs2, $rs3, 0b111)>;

// fmsub: rs1 * rs2 - rs3
def : Pat<(fma FPR32:$rs1, FPR32:$rs2, (fneg FPR32:$rs3)),
          (FMSUB_S FPR32:$rs1, FPR32:$rs2, FPR32:$rs3, 0b111)>;

// fnmsub: -rs1 * rs2 + rs3
def : Pat<(fma (fneg FPR32:$rs1), FPR32:$rs2, FPR32:$rs3),
          (FNMSUB_S FPR32:$rs1, FPR32:$rs2, FPR32:$rs3, 0b111)>;

// fnmadd: -rs1 * rs2 - rs3
def : Pat<(fma (fneg FPR32:$rs1), FPR32:$rs2, (fneg FPR32:$rs3)),
          (FNMADD_S FPR32:$rs1, FPR32:$rs2, FPR32:$rs3, 0b111)>;

// The RISC-V 2.2 user-level ISA spec defines fmin and fmax as returning the
// canonical NaN when given a signaling NaN. This doesn't match the LLVM
// behaviour (see https://bugs.llvm.org/show_bug.cgi?id=27363). However, the
// draft 2.3 ISA spec changes the definition of fmin and fmax in a way that
// matches LLVM's fminnum and fmaxnum
// <https://github.com/riscv/riscv-isa-manual/commit/cd20cee7efd9bac7c5aa127ec3b451749d2b3cce>.
def : PatFpr32Fpr32<fminnum, FMIN_S>;
def : PatFpr32Fpr32<fmaxnum, FMAX_S>;

/// Setcc

def : PatFpr32Fpr32<seteq, FEQ_S>;
def : PatFpr32Fpr32<setoeq, FEQ_S>;
def : PatFpr32Fpr32<setlt, FLT_S>;
def : PatFpr32Fpr32<setolt, FLT_S>;
def : PatFpr32Fpr32<setle, FLE_S>;
def : PatFpr32Fpr32<setole, FLE_S>;

def Select_FPR32_Using_CC_GPR : SelectCC_rrirr<FPR32, GPR>;

/// Loads

defm : LdPat<load, FLW>;

/// Stores

defm : StPat<store, FSW, FPR32>;

} // Predicates = [HasStdExtF]

let Predicates = [HasStdExtF, IsRV32] in {
// Moves (no conversion)
def : Pat<(bitconvert GPR:$rs1), (FMV_W_X GPR:$rs1)>;
def : Pat<(bitconvert FPR32:$rs1), (FMV_X_W FPR32:$rs1)>;

// float->[u]int. Round-to-zero must be used.
def : Pat<(fp_to_sint FPR32:$rs1), (FCVT_W_S $rs1, 0b001)>;
def : Pat<(fp_to_uint FPR32:$rs1), (FCVT_WU_S $rs1, 0b001)>;

// [u]int->float. Match GCC and default to using dynamic rounding mode.
def : Pat<(sint_to_fp GPR:$rs1), (FCVT_S_W $rs1, 0b111)>;
def : Pat<(uint_to_fp GPR:$rs1), (FCVT_S_WU $rs1, 0b111)>;
} // Predicates = [HasStdExtF, IsRV32]

let Predicates = [HasStdExtF, IsRV64] in {
// Moves (no conversion)
def : Pat<(riscv_fmv_w_x_rv64 GPR:$src), (FMV_W_X GPR:$src)>;
def : Pat<(riscv_fmv_x_anyextw_rv64 FPR32:$src), (FMV_X_W FPR32:$src)>;
def : Pat<(sext_inreg (riscv_fmv_x_anyextw_rv64 FPR32:$src), i32),
          (FMV_X_W FPR32:$src)>;

// FP->[u]int32 is mostly handled by the FP->[u]int64 patterns. This is safe
// because fpto[u|s]i produces poison if the value can't fit into the target.
// We match the single case below because fcvt.wu.s sign-extends its result so
// is cheaper than fcvt.lu.s+sext.w.
def : Pat<(sext_inreg (assertzexti32 (fp_to_uint FPR32:$rs1)), i32),
          (FCVT_WU_S $rs1, 0b001)>;

// FP->[u]int64
def : Pat<(fp_to_sint FPR32:$rs1), (FCVT_L_S $rs1, 0b001)>;
def : Pat<(fp_to_uint FPR32:$rs1), (FCVT_LU_S $rs1, 0b001)>;

// [u]int->fp. Match GCC and default to using dynamic rounding mode.
def : Pat<(sint_to_fp (sexti32 GPR:$rs1)), (FCVT_S_W $rs1, 0b111)>;
def : Pat<(uint_to_fp (zexti32 GPR:$rs1)), (FCVT_S_WU $rs1, 0b111)>;
def : Pat<(sint_to_fp GPR:$rs1), (FCVT_S_L $rs1, 0b111)>;
def : Pat<(uint_to_fp GPR:$rs1), (FCVT_S_LU $rs1, 0b111)>;
} // Predicates = [HasStdExtF, IsRV64]