[PATCH 2/3] RISC-V: Add support for Zvfbfmin extension
Xiao Zeng
zengxiao@eswincomputing.com
Thu May 30 09:41:11 GMT 2024
This implements the Zvfbfmin extension, as of version 1.0.
View detailed information in:
<https://github.com/riscv/riscv-isa-manual/blob/main/src/bfloat16.adoc#zvfbfmin---vector-bf16-converts>
Depending on different usage scenarios, the Zvfbfmin extension may
depend on 'V' or 'Zve32f'. This patch only implements dependencies
in scenario of Embedded Processor. In scenario of Application
Processor, it is necessary to explicitly indicate the dependent
'V' extension.
For relevant information in gcc, please refer to:
<https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=1ddf65c5fc6ba7cf5826e1c02c569c923a541c09>
bfd/ChangeLog:
* elfxx-riscv.c (riscv_multi_subset_supports): Handle Zvfbfmin.
(riscv_multi_subset_supports_ext): Ditto.
gas/ChangeLog:
* NEWS: Updated.
* testsuite/gas/riscv/march-help.l: Ditto.
* testsuite/gas/riscv/zvfbfmin-rv32.d: New test.
* testsuite/gas/riscv/zvfbfmin-rv32.s: New test.
* testsuite/gas/riscv/zvfbfmin-rv64.d: New test.
* testsuite/gas/riscv/zvfbfmin-rv64.s: New test.
include/ChangeLog:
* opcode/riscv-opc.h (MATCH_VFNCVTBF16_F_F_W): Define.
(MASK_VFNCVTBF16_F_F_W): Ditto.
(MATCH_VFWCVTBF16_F_F_V): Ditto.
(MASK_VFWCVTBF16_F_F_V): Ditto.
(DECLARE_INSN): New declarations for Zvfbfmin.
* opcode/riscv.h (enum riscv_insn_class): Add
INSN_CLASS_ZVFBFMIN
opcodes/ChangeLog:
* riscv-opc.c: Add Zvfbfmin instructions.
---
bfd/elfxx-riscv.c | 6 ++++++
gas/NEWS | 2 ++
gas/testsuite/gas/riscv/march-help.l | 1 +
gas/testsuite/gas/riscv/zvfbfmin-rv32.d | 12 ++++++++++++
gas/testsuite/gas/riscv/zvfbfmin-rv32.s | 7 +++++++
gas/testsuite/gas/riscv/zvfbfmin-rv64.d | 12 ++++++++++++
gas/testsuite/gas/riscv/zvfbfmin-rv64.s | 7 +++++++
include/opcode/riscv-opc.h | 8 ++++++++
include/opcode/riscv.h | 1 +
opcodes/riscv-opc.c | 4 ++++
10 files changed, 60 insertions(+)
create mode 100644 gas/testsuite/gas/riscv/zvfbfmin-rv32.d
create mode 100644 gas/testsuite/gas/riscv/zvfbfmin-rv32.s
create mode 100644 gas/testsuite/gas/riscv/zvfbfmin-rv64.d
create mode 100644 gas/testsuite/gas/riscv/zvfbfmin-rv64.s
diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
index d9709a232e6..3d303f02b58 100644
--- a/bfd/elfxx-riscv.c
+++ b/bfd/elfxx-riscv.c
@@ -1192,6 +1192,7 @@ static struct riscv_implicit_subset riscv_implicit_subsets[] =
{"v", "zve64d", check_implicit_always},
{"v", "zvl128b", check_implicit_always},
{"zabha", "a", check_implicit_always},
+ {"zvfbfmin", "zve32f", check_implicit_always},
{"zvfh", "zvfhmin", check_implicit_always},
{"zvfh", "zfhmin", check_implicit_always},
{"zvfhmin", "zve32f", check_implicit_always},
@@ -1394,6 +1395,7 @@ static struct riscv_supported_ext riscv_supported_std_z_ext[] =
{"zvbb", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"zvbc", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"zvfh", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
+ {"zvfbfmin", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"zvfhmin", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"zvkb", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"zvkg", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
@@ -2644,6 +2646,8 @@ riscv_multi_subset_supports (riscv_parse_subset_t *rps,
return riscv_subset_supports (rps, "zvbb");
case INSN_CLASS_ZVBC:
return riscv_subset_supports (rps, "zvbc");
+ case INSN_CLASS_ZVFBFMIN:
+ return riscv_subset_supports (rps, "zvfbfmin");
case INSN_CLASS_ZVKB:
return riscv_subset_supports (rps, "zvkb");
case INSN_CLASS_ZVKG:
@@ -2908,6 +2912,8 @@ riscv_multi_subset_supports_ext (riscv_parse_subset_t *rps,
return _("zvbb");
case INSN_CLASS_ZVBC:
return _("zvbc");
+ case INSN_CLASS_ZVFBFMIN:
+ return "zvfbfmin";
case INSN_CLASS_ZVKB:
return _("zvkb");
case INSN_CLASS_ZVKG:
diff --git a/gas/NEWS b/gas/NEWS
index b88c54fc5c3..2c75966d0ce 100644
--- a/gas/NEWS
+++ b/gas/NEWS
@@ -1,5 +1,7 @@
-*- text -*-
+* Add support for RISC-V Zvfbfmin extension with version 1.0.
+
* Add support for RISC-V Zfbfmin extension with version 1.0.
* In x86 Intel syntax undue mnemonic suffixes are now warned about. This is
diff --git a/gas/testsuite/gas/riscv/march-help.l b/gas/testsuite/gas/riscv/march-help.l
index 9deaa841622..1a2ac1eaa08 100644
--- a/gas/testsuite/gas/riscv/march-help.l
+++ b/gas/testsuite/gas/riscv/march-help.l
@@ -59,6 +59,7 @@ All available -march extensions for RISC-V:
zvbb 1.0
zvbc 1.0
zvfh 1.0
+ zvfbfmin 1.0
zvfhmin 1.0
zvkb 1.0
zvkg 1.0
diff --git a/gas/testsuite/gas/riscv/zvfbfmin-rv32.d b/gas/testsuite/gas/riscv/zvfbfmin-rv32.d
new file mode 100644
index 00000000000..b52e19d30be
--- /dev/null
+++ b/gas/testsuite/gas/riscv/zvfbfmin-rv32.d
@@ -0,0 +1,12 @@
+#as: -march=rv32i_zvfbfmin
+#objdump: -d
+
+.*:[ ]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ ]+[0-9a-f]+:[ ]+4a8e9257[ ]+vfncvtbf16.f.f.w[ ]+v4,v8
+[ ]+[0-9a-f]+:[ ]+488e9257[ ]+vfncvtbf16.f.f.w[ ]+v4,v8,v0.t
+[ ]+[0-9a-f]+:[ ]+4a869257[ ]+vfwcvtbf16.f.f.v[ ]+v4,v8
+[ ]+[0-9a-f]+:[ ]+48869257[ ]+vfwcvtbf16.f.f.v[ ]+v4,v8,v0.t
diff --git a/gas/testsuite/gas/riscv/zvfbfmin-rv32.s b/gas/testsuite/gas/riscv/zvfbfmin-rv32.s
new file mode 100644
index 00000000000..9a4493d84d1
--- /dev/null
+++ b/gas/testsuite/gas/riscv/zvfbfmin-rv32.s
@@ -0,0 +1,7 @@
+target:
+ # vfncvtbf16.f.f.w
+ vfncvtbf16.f.f.w v4, v8
+ vfncvtbf16.f.f.w v4, v8, v0.t
+ # vfwcvtbf16.f.f.v
+ vfwcvtbf16.f.f.v v4, v8
+ vfwcvtbf16.f.f.v v4, v8, v0.t
diff --git a/gas/testsuite/gas/riscv/zvfbfmin-rv64.d b/gas/testsuite/gas/riscv/zvfbfmin-rv64.d
new file mode 100644
index 00000000000..ce973812fe1
--- /dev/null
+++ b/gas/testsuite/gas/riscv/zvfbfmin-rv64.d
@@ -0,0 +1,12 @@
+#as: -march=rv64iv_zvfbfmin
+#objdump: -d
+
+.*:[ ]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ ]+[0-9a-f]+:[ ]+4a8e9257[ ]+vfncvtbf16.f.f.w[ ]+v4,v8
+[ ]+[0-9a-f]+:[ ]+488e9257[ ]+vfncvtbf16.f.f.w[ ]+v4,v8,v0.t
+[ ]+[0-9a-f]+:[ ]+4a869257[ ]+vfwcvtbf16.f.f.v[ ]+v4,v8
+[ ]+[0-9a-f]+:[ ]+48869257[ ]+vfwcvtbf16.f.f.v[ ]+v4,v8,v0.t
diff --git a/gas/testsuite/gas/riscv/zvfbfmin-rv64.s b/gas/testsuite/gas/riscv/zvfbfmin-rv64.s
new file mode 100644
index 00000000000..9a4493d84d1
--- /dev/null
+++ b/gas/testsuite/gas/riscv/zvfbfmin-rv64.s
@@ -0,0 +1,7 @@
+target:
+ # vfncvtbf16.f.f.w
+ vfncvtbf16.f.f.w v4, v8
+ vfncvtbf16.f.f.w v4, v8, v0.t
+ # vfwcvtbf16.f.f.v
+ vfwcvtbf16.f.f.v v4, v8
+ vfwcvtbf16.f.f.v v4, v8, v0.t
diff --git a/include/opcode/riscv-opc.h b/include/opcode/riscv-opc.h
index 26d60bc585e..32b971fb2b3 100644
--- a/include/opcode/riscv-opc.h
+++ b/include/opcode/riscv-opc.h
@@ -2370,6 +2370,11 @@
#define MASK_FCVT_BF16_S 0xfff0007f
#define MATCH_FCVT_S_BF16 0x40600053
#define MASK_FCVT_S_BF16 0xfff0007f
+/* Zvfbfmin intructions. */
+#define MATCH_VFNCVTBF16_F_F_W 0x480e9057
+#define MASK_VFNCVTBF16_F_F_W 0xfc0ff07f
+#define MATCH_VFWCVTBF16_F_F_V 0x48069057
+#define MASK_VFWCVTBF16_F_F_V 0xfc0ff07f
/* Vendor-specific (CORE-V) Xcvmac instructions. */
#define MATCH_CV_MAC 0x9000302b
#define MASK_CV_MAC 0xfe00707f
@@ -3920,6 +3925,9 @@ DECLARE_INSN(wrs_sto, MATCH_WRS_STO, MASK_WRS_STO)
/* Zfbfmin instructions. */
DECLARE_INSN(FCVT_BF16_S, MATCH_FCVT_BF16_S, MASK_FCVT_BF16_S)
DECLARE_INSN(FCVT_S_BF16, MATCH_FCVT_S_BF16, MASK_FCVT_S_BF16)
+/* Zvfbfmin instructions. */
+DECLARE_INSN(VFNCVTBF16_F_F_W, MATCH_VFNCVTBF16_F_F_W, MASK_VFNCVTBF16_F_F_W)
+DECLARE_INSN(VFWCVTBF16_F_F_V, MATCH_VFWCVTBF16_F_F_V, MASK_VFWCVTBF16_F_F_V)
/* Zvbb/Zvkb instructions. */
DECLARE_INSN(vandn_vv, MATCH_VANDN_VV, MASK_VANDN_VV)
DECLARE_INSN(vandn_vx, MATCH_VANDN_VX, MASK_VANDN_VX)
diff --git a/include/opcode/riscv.h b/include/opcode/riscv.h
index 0e58dbe3d03..4d21b6c3926 100644
--- a/include/opcode/riscv.h
+++ b/include/opcode/riscv.h
@@ -471,6 +471,7 @@ enum riscv_insn_class
INSN_CLASS_ZVEF,
INSN_CLASS_ZVBB,
INSN_CLASS_ZVBC,
+ INSN_CLASS_ZVFBFMIN,
INSN_CLASS_ZVKB,
INSN_CLASS_ZVKG,
INSN_CLASS_ZVKNED,
diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index 9f99aa6c792..0a470aee7cc 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -2041,6 +2041,10 @@ const struct riscv_opcode riscv_opcodes[] =
{"vclmulh.vv", 0, INSN_CLASS_ZVBC, "Vd,Vt,VsVm", MATCH_VCLMULH_VV, MASK_VCLMULH_VV, match_opcode, 0},
{"vclmulh.vx", 0, INSN_CLASS_ZVBC, "Vd,Vt,sVm", MATCH_VCLMULH_VX, MASK_VCLMULH_VX, match_opcode, 0},
+/* Zvfbfmin instructions. */
+{"vfncvtbf16.f.f.w", 0, INSN_CLASS_ZVFBFMIN, "Vd,VtVm", MATCH_VFNCVTBF16_F_F_W, MASK_VFNCVTBF16_F_F_W, match_opcode, 0},
+{"vfwcvtbf16.f.f.v", 0, INSN_CLASS_ZVFBFMIN, "Vd,VtVm", MATCH_VFWCVTBF16_F_F_V, MASK_VFWCVTBF16_F_F_V, match_opcode, 0},
+
/* Zvkg instructions. */
{"vghsh.vv", 0, INSN_CLASS_ZVKG, "Vd,Vt,Vs", MATCH_VGHSH_VV, MASK_VGHSH_VV, match_opcode, 0},
{"vgmul.vv", 0, INSN_CLASS_ZVKG, "Vd,Vt", MATCH_VGMUL_VV, MASK_VGMUL_VV, match_opcode, 0},
--
2.17.1
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