RISC-V: Add floating-point arithmetic instructions for T-Head VECTOR vendor extension

T-Head has a range of vendor-specific instructions. Therefore
it makes sense to group them into smaller chunks in form of
vendor extensions.

This patch adds floating-point arithmetic instructions for the
"XTheadVector" extension. The 'th' prefix and the
"XTheadVector" extension are documented in a PR for the
RISC-V toolchain conventions ([1]).

[1] https://github.com/riscv-non-isa/riscv-toolchain-conventions/pull/19

Co-developed-by: Lifang Xia <lifang_xia@linux.alibaba.com>
Co-developed-by: Christoph Müllner <christoph.muellner@vrull.eu>

gas/ChangeLog:

	* testsuite/gas/riscv/x-thead-vector.d: Add tests for
	floating-point arithmetic instructions.
	* testsuite/gas/riscv/x-thead-vector.s: Likewise.

include/ChangeLog:

	* opcode/riscv-opc.h (MATCH_TH_VFSQRTV): New.

opcodes/ChangeLog:

	* riscv-opc.c: Likewise.

1 files changed, 86 insertions, 0 deletions

diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index 6a8d41d..31689a6 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -2758,6 +2758,92 @@ const struct riscv_opcode riscv_opcodes[] =
 {"th.vnclip.vv",   0, INSN_CLASS_XTHEADVECTOR,  "Vd,Vt,VsVm", MATCH_VNCLIPWV, MASK_VNCLIPWV, match_opcode, 0 },
 {"th.vnclip.vx",   0, INSN_CLASS_XTHEADVECTOR,  "Vd,Vt,sVm", MATCH_VNCLIPWX, MASK_VNCLIPWX, match_opcode, 0 },
 {"th.vnclip.vi",   0, INSN_CLASS_XTHEADVECTOR,  "Vd,Vt,VjVm", MATCH_VNCLIPWI, MASK_VNCLIPWI, match_opcode, 0 },
+{"th.vfadd.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFADDVV, MASK_VFADDVV, match_opcode, 0},
+{"th.vfadd.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFADDVF, MASK_VFADDVF, match_opcode, 0},
+{"th.vfsub.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFSUBVV, MASK_VFSUBVV, match_opcode, 0},
+{"th.vfsub.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFSUBVF, MASK_VFSUBVF, match_opcode, 0},
+{"th.vfrsub.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFRSUBVF, MASK_VFRSUBVF, match_opcode, 0},
+{"th.vfwadd.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFWADDVV, MASK_VFWADDVV, match_opcode, 0},
+{"th.vfwadd.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFWADDVF, MASK_VFWADDVF, match_opcode, 0},
+{"th.vfwsub.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFWSUBVV, MASK_VFWSUBVV, match_opcode, 0},
+{"th.vfwsub.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFWSUBVF, MASK_VFWSUBVF, match_opcode, 0},
+{"th.vfwadd.wv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFWADDWV, MASK_VFWADDWV, match_opcode, 0},
+{"th.vfwsub.wv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFWSUBWV, MASK_VFWSUBWV, match_opcode, 0},
+{"th.vfwadd.wf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFWADDWF, MASK_VFWADDWF, match_opcode, 0},
+{"th.vfwsub.wf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFWSUBWF, MASK_VFWSUBWF, match_opcode, 0},
+{"th.vfmul.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFMULVV, MASK_VFMULVV, match_opcode, 0},
+{"th.vfmul.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFMULVF, MASK_VFMULVF, match_opcode, 0},
+{"th.vfdiv.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFDIVVV, MASK_VFDIVVV, match_opcode, 0},
+{"th.vfdiv.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFDIVVF, MASK_VFDIVVF, match_opcode, 0},
+{"th.vfrdiv.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFRDIVVF, MASK_VFRDIVVF, match_opcode, 0},
+{"th.vfwmul.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFWMULVV, MASK_VFWMULVV, match_opcode, 0},
+{"th.vfwmul.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFWMULVF, MASK_VFWMULVF, match_opcode, 0},
+{"th.vfmadd.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFMADDVV, MASK_VFMADDVV, match_opcode, 0},
+{"th.vfmadd.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFMADDVF, MASK_VFMADDVF, match_opcode, 0},
+{"th.vfnmadd.vv", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFNMADDVV, MASK_VFNMADDVV, match_opcode, 0},
+{"th.vfnmadd.vf", 0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFNMADDVF, MASK_VFNMADDVF, match_opcode, 0},
+{"th.vfmsub.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFMSUBVV, MASK_VFMSUBVV, match_opcode, 0},
+{"th.vfmsub.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFMSUBVF, MASK_VFMSUBVF, match_opcode, 0},
+{"th.vfnmsub.vv", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFNMSUBVV, MASK_VFNMSUBVV, match_opcode, 0},
+{"th.vfnmsub.vf", 0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFNMSUBVF, MASK_VFNMSUBVF, match_opcode, 0},
+{"th.vfmacc.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFMACCVV, MASK_VFMACCVV, match_opcode, 0},
+{"th.vfmacc.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFMACCVF, MASK_VFMACCVF, match_opcode, 0},
+{"th.vfnmacc.vv", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFNMACCVV, MASK_VFNMACCVV, match_opcode, 0},
+{"th.vfnmacc.vf", 0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFNMACCVF, MASK_VFNMACCVF, match_opcode, 0},
+{"th.vfmsac.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFMSACVV, MASK_VFMSACVV, match_opcode, 0},
+{"th.vfmsac.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFMSACVF, MASK_VFMSACVF, match_opcode, 0},
+{"th.vfnmsac.vv", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFNMSACVV, MASK_VFNMSACVV, match_opcode, 0},
+{"th.vfnmsac.vf", 0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFNMSACVF, MASK_VFNMSACVF, match_opcode, 0},
+{"th.vfwmacc.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFWMACCVV, MASK_VFWMACCVV, match_opcode, 0},
+{"th.vfwmacc.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFWMACCVF, MASK_VFWMACCVF, match_opcode, 0},
+{"th.vfwnmacc.vv", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFWNMACCVV, MASK_VFWNMACCVV, match_opcode, 0},
+{"th.vfwnmacc.vf", 0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFWNMACCVF, MASK_VFWNMACCVF, match_opcode, 0},
+{"th.vfwmsac.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFWMSACVV, MASK_VFWMSACVV, match_opcode, 0},
+{"th.vfwmsac.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFWMSACVF, MASK_VFWMSACVF, match_opcode, 0},
+{"th.vfwnmsac.vv", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VFWNMSACVV, MASK_VFWNMSACVV, match_opcode, 0},
+{"th.vfwnmsac.vf", 0, INSN_CLASS_XTHEADVECTOR, "Vd,S,VtVm", MATCH_VFWNMSACVF, MASK_VFWNMSACVF, match_opcode, 0},
+{"th.vfsqrt.v",   0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFSQRTV, MASK_TH_VFSQRTV, match_opcode, 0},
+{"th.vfmin.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFMINVV, MASK_VFMINVV, match_opcode, 0},
+{"th.vfmin.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFMINVF, MASK_VFMINVF, match_opcode, 0},
+{"th.vfmax.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFMAXVV, MASK_VFMAXVV, match_opcode, 0},
+{"th.vfmax.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFMAXVF, MASK_VFMAXVF, match_opcode, 0},
+{"th.vfsgnj.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFSGNJVV, MASK_VFSGNJVV, match_opcode, 0},
+{"th.vfsgnj.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFSGNJVF, MASK_VFSGNJVF, match_opcode, 0},
+{"th.vfsgnjn.vv", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFSGNJNVV, MASK_VFSGNJNVV, match_opcode, 0},
+{"th.vfsgnjn.vf", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFSGNJNVF, MASK_VFSGNJNVF, match_opcode, 0},
+{"th.vfsgnjx.vv", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VFSGNJXVV, MASK_VFSGNJXVV, match_opcode, 0},
+{"th.vfsgnjx.vf", 0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VFSGNJXVF, MASK_VFSGNJXVF, match_opcode, 0},
+{"th.vmfeq.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VMFEQVV, MASK_VMFEQVV, match_opcode, 0},
+{"th.vmfeq.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VMFEQVF, MASK_VMFEQVF, match_opcode, 0},
+{"th.vmfne.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VMFNEVV, MASK_VMFNEVV, match_opcode, 0},
+{"th.vmfne.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VMFNEVF, MASK_VMFNEVF, match_opcode, 0},
+{"th.vmflt.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VMFLTVV, MASK_VMFLTVV, match_opcode, 0},
+{"th.vmflt.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VMFLTVF, MASK_VMFLTVF, match_opcode, 0},
+{"th.vmfle.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VMFLEVV, MASK_VMFLEVV, match_opcode, 0},
+{"th.vmfle.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VMFLEVF, MASK_VMFLEVF, match_opcode, 0},
+{"th.vmfgt.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VMFGTVF, MASK_VMFGTVF, match_opcode, 0},
+{"th.vmfge.vf",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_VMFGEVF, MASK_VMFGEVF, match_opcode, 0},
+{"th.vmfgt.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VMFLTVV, MASK_VMFLTVV, match_opcode, INSN_ALIAS},
+{"th.vmfge.vv",   0, INSN_CLASS_XTHEADVECTOR, "Vd,Vs,VtVm", MATCH_VMFLEVV, MASK_VMFLEVV, match_opcode, INSN_ALIAS},
+{"th.vmford.vv",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_TH_VMFORDVV, MASK_TH_VMFORDVV, match_opcode, 0},
+{"th.vmford.vf",  0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,SVm", MATCH_TH_VMFORDVF, MASK_TH_VMFORDVF, match_opcode, 0},
+{"th.vfclass.v",  0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFCLASSV, MASK_TH_VFCLASSV, match_opcode, 0},
+{"th.vfmerge.vfm",0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,S,V0", MATCH_VFMERGEVFM, MASK_VFMERGEVFM, match_opcode, 0},
+{"th.vfmv.v.f",   0, INSN_CLASS_XTHEADVECTOR, "Vd,S", MATCH_VFMVVF, MASK_VFMVVF, match_opcode, 0 },
+{"th.vfcvt.xu.f.v",0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFCVTXUFV, MASK_TH_VFCVTXUFV, match_opcode, 0},
+{"th.vfcvt.x.f.v", 0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFCVTXFV, MASK_TH_VFCVTXFV, match_opcode, 0},
+{"th.vfcvt.f.xu.v",0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFCVTFXUV, MASK_TH_VFCVTFXUV, match_opcode, 0},
+{"th.vfcvt.f.x.v", 0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFCVTFXV, MASK_TH_VFCVTFXV, match_opcode, 0},
+{"th.vfwcvt.xu.f.v",0,INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFWCVTXUFV, MASK_TH_VFWCVTXUFV, match_opcode, 0},
+{"th.vfwcvt.x.f.v",0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFWCVTXFV, MASK_TH_VFWCVTXFV, match_opcode, 0},
+{"th.vfwcvt.f.xu.v",0,INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFWCVTFXUV, MASK_TH_VFWCVTFXUV, match_opcode, 0},
+{"th.vfwcvt.f.x.v",0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFWCVTFXV, MASK_TH_VFWCVTFXV, match_opcode, 0},
+{"th.vfwcvt.f.f.v",0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFWCVTFFV, MASK_TH_VFWCVTFFV, match_opcode, 0},
+{"th.vfncvt.xu.f.v",0,INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFNCVTXUFV, MASK_TH_VFNCVTXUFV, match_opcode, 0},
+{"th.vfncvt.x.f.v",0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFNCVTXFV, MASK_TH_VFNCVTXFV, match_opcode, 0},
+{"th.vfncvt.f.xu.v",0,INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFNCVTFXUV, MASK_TH_VFNCVTFXUV, match_opcode, 0},
+{"th.vfncvt.f.x.v",0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFNCVTFXV, MASK_TH_VFNCVTFXV, match_opcode, 0},
+{"th.vfncvt.f.f.v",0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VFNCVTFFV, MASK_TH_VFNCVTFFV, match_opcode, 0},
 
 /* Vendor-specific (Ventana Microsystems) XVentanaCondOps instructions */
 {"vt.maskc",   64, INSN_CLASS_XVENTANACONDOPS, "d,s,t", MATCH_VT_MASKC, MASK_VT_MASKC, match_opcode, 0 },