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feat(asm): encode the riscv64 quad-precision family and fix the fp cvt paths

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Assisted-by: GLM 5.3 Flash
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petrbalvin committed 2026-10-07 00:47:27 +02:00
1 parent 955bc6643e
commit 9b751f6e58
4 files changed
+331 -50
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asm/riscv_assemble.go
+10 -6
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@@ -1368,7 +1368,7 @@ func encodeRISCVInstr(instr *ast.Instr, pc int, offsets map[string]int, fi riscv
// FP conversions with an explicit rounding mode: FCVTWS.RNE and friends
// suffix the base mnemonic with RNE/RTZ/RDN/RUP/RMM, which lands in the
// low three bits of the funct7 field.
// funct3 field, replacing the bare form's default.
if i := strings.IndexByte(mnem, '.'); i > 0 {
if base, ok := riscvCvtTable[mnem[:i]]; ok {
rm, ok := riscvRoundModes[mnem[i+1:]]
@@ -1383,7 +1383,7 @@ func encodeRISCVInstr(instr *ast.Instr, pc int, offsets map[string]int, fi riscv
if rd < 0 || rs1 < 0 {
return nil, fmt.Errorf("invalid operand in %s", mnem)
}
base.funct7 = (base.funct7 &^ 7) | rm
base.funct3 = uint32(rm)
word := riscvCvtType(base, rd, rs1)
return []byte{byte(word), byte(word >> 8), byte(word >> 16), byte(word >> 24)}, nil
}
@@ -4653,18 +4653,21 @@ func isFPArithInstr(m string) bool {
case "FADDS", "FSUBS", "FMULS", "FDIVS",
"FADDD", "FSUBD", "FMULD", "FDIVD",
"FSQRTS", "FSQRTD", "FMINS", "FMAXS", "FMIND", "FMAXD", "FSGNJD",
"FSGNJS", "FSGNJX", "FSGNJXD", "FSGNJXS", "FSGNJND", "FSGNJNS", "FSGNJNX":
"FSGNJS", "FSGNJXD", "FSGNJXS", "FSGNJND", "FSGNJNS",
"FADDQ", "FSUBQ", "FMULQ", "FDIVQ",
"FSQRTQ", "FMINQ", "FMAXQ", "FSGNJQ",
"FSGNJXQ", "FSGNJNQ":
return true
}
return false
}
func isFPLoadInstr(m string) bool {
return m == "FLW" || m == "FLD"
return m == "FLW" || m == "FLD" || m == "FLQ"
}
func isFPStoreInstr(m string) bool {
return m == "FSW" || m == "FSD"
return m == "FSW" || m == "FSD" || m == "FSQ"
}
func isLRInstr(m string) bool {
@@ -4677,7 +4680,8 @@ func isSCInstr(m string) bool {
func isFPCmpInstr(m string) bool {
switch m {
case "FEQS", "FLTS", "FLES", "FEQD", "FLTD", "FLED":
case "FEQS", "FLTS", "FLES", "FEQD", "FLTD", "FLED",
"FEQQ", "FLTQ", "FLEQ":
return true
}
return false