[PATCH 1/2] RISC-V: Make `zip'/`unzip' on Zbkb non-aliases

[Tsukasa OI <research_trasio@irq.a4lg.com>]

`zip'/`unzip' are specialized forms of `shfli'/`unshfli' instructions
respectively.  However, because both `shfli' and `unshfli' are not
ratified (in generalized forms), disassembling `zip'/`unzip' on
RV32_Zbkb with `-M no-aliases' option makes disassembly dumps with
`.4byte' (an unrecognized instruction), not `zip'/`unzip'.
This commit makes `zip'/`unzip' non-aliases until generalized forms of
`shfli' and `unshfli' are ratified.

gas/ChangeLog:

	* testsuite/gas/riscv/zbkb-32.d: Make sure that all instructions
	in RV32_Zbkb are non-aliases and disassembled correctly.

opcodes/ChangeLog:

	* riscv-opc.c (riscv_opcodes): Make `zip'/`unzip' instructions
	on RV32_Zbkb non-aliases to fix a disassembler issue.
---
 gas/testsuite/gas/riscv/zbkb-32.d | 2 +-
 opcodes/riscv-opc.c               | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/gas/testsuite/gas/riscv/zbkb-32.d b/gas/testsuite/gas/riscv/zbkb-32.d
index c2718a0965a..c3fd09f9274 100644
--- a/gas/testsuite/gas/riscv/zbkb-32.d
+++ b/gas/testsuite/gas/riscv/zbkb-32.d
@@ -1,6 +1,6 @@
 #as: -march=rv32i_zbkb
 #source: zbkb-32.s
-#objdump: -d
+#objdump: -d -M no-aliases
 
 .*:[ 	]+file format .*
 
diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index 2f9945aa930..6c5b2eaf524 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -942,8 +942,8 @@ const struct riscv_opcode riscv_opcodes[] =
 {"cpopw",     64, INSN_CLASS_ZBB,  "d,s",   MATCH_CPOPW, MASK_CPOPW, match_opcode, 0 },
 {"brev8",     32, INSN_CLASS_ZBKB,  "d,s",      MATCH_GREVI | MATCH_SHAMT_BREV8, MASK_GREVI | MASK_SHAMT, match_opcode, 0 },
 {"brev8",     64, INSN_CLASS_ZBKB,  "d,s",      MATCH_GREVI | MATCH_SHAMT_BREV8, MASK_GREVI | MASK_SHAMT, match_opcode, 0 },
-{"zip",       32, INSN_CLASS_ZBKB,  "d,s",      MATCH_SHFLI|MATCH_SHAMT_ZIP_32, MASK_SHFLI|MASK_SHAMT, match_opcode, INSN_ALIAS },
-{"unzip",     32, INSN_CLASS_ZBKB,  "d,s",      MATCH_UNSHFLI|MATCH_SHAMT_ZIP_32, MASK_UNSHFLI|MASK_SHAMT, match_opcode, INSN_ALIAS },
+{"zip",       32, INSN_CLASS_ZBKB,  "d,s",      MATCH_SHFLI|MATCH_SHAMT_ZIP_32, MASK_SHFLI|MASK_SHAMT, match_opcode, 0 },
+{"unzip",     32, INSN_CLASS_ZBKB,  "d,s",      MATCH_UNSHFLI|MATCH_SHAMT_ZIP_32, MASK_UNSHFLI|MASK_SHAMT, match_opcode, 0 },
 {"pack",       0, INSN_CLASS_ZBKB,  "d,s,t",    MATCH_PACK, MASK_PACK, match_opcode, 0 },
 {"packh",      0, INSN_CLASS_ZBKB,  "d,s,t",    MATCH_PACKH, MASK_PACKH, match_opcode, 0 },
 {"packw",     64, INSN_CLASS_ZBKB,  "d,s,t",    MATCH_PACKW, MASK_PACKW, match_opcode, 0 },
-- 
2.34.1