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This patch fixes encoding and syntax for sve2p1 instructions ld[1-4]q/st[1-4]q as mentioned below, for the issues reported here. https://sourceware.org/pipermail/binutils/2024-February/132408.html 1) Previously all the ld[1-4]q/st[1-4]q instructions are wrongly added as predicated instructions and this issue is fixed in this patch by replacing "SVE2p1_INSNC" with "SVE2p1_INSN" macro. 2) Wrong first operand in all the ld[1-4]q/st[1-4]q instructions is fixed by replacing "SVE_Zt" with "SVE_ZtxN". 3) Wrong operand qualifiers in ld1q and st1q instructions are also fixed in this patch. 4) In ld1q/st1q the index in the second argument is optional and if index is xzr and is skipped in the assembly, the index field is ignored by the disassembler. Fixing above mentioned issues helps with following: 1) ld1q and st1q first register operand accepts enclosed figure braces. 2) ld2q, ld3q, ld4q, st2q, st3q, and st4q instructions accepts wrapping sequence of vector registers. For the instructions ld[2-4]q/st[2-4]q, tests for wrapping sequence of vector registers are added along with short-form of operands for non-wrapping sequence. I have added test using following logic: ld2q {Z0.Q, Z1.Q}, p0/Z, [x0, #0, MUL VL] //raw insn encoding (all zeroes) ld2q {Z31.Q, Z0.Q}, p0/Z, [x0, #0, MUL VL] // encoding of <Zt1> ld2q {Z0.Q, Z1.Q}, p7/Z, [x0, #0, MUL VL] // encoding of <Pg> ld2q {Z0.Q, Z1.Q}, p0/Z, [x30, #0, MUL VL] // encoding of <Xm> ld2q {Z0.Q, Z1.Q}, p0/Z, [x0, #-16, MUL VL] // encoding of <imm> (low value) ld2q {Z0.Q, Z1.Q}, p0/Z, [x0, #14, MUL VL] // encoding of <imm> (high value) ld2q {Z31.Q, Z0.Q}, p7/Z, [x30, #-16, MUL VL] // encoding of all fields (all ones) ld2q {Z30.Q, Z31.Q}, p1/Z, [x3, #-2, MUL VL] // random encoding. For all the above form of instructions the hyphenated form is preferred for disassembly if there are more than two registers in the list, and the register numbers are monotonically increasing in increments of one.
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.