diff options
Diffstat (limited to 'gas/config/tc-i386.c')
| -rw-r--r-- | gas/config/tc-i386.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index 7f5ced7..4a71209 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -448,6 +448,13 @@ static unsigned int no_cond_jump_promotion = 0; /* Encode SSE instructions with VEX prefix. */ static unsigned int sse2avx; +/* Encode scalar AVX instructions with specific vector length. */ +static enum + { + vex128 = 0, + vex256 + } avxscalar; + /* Pre-defined "_GLOBAL_OFFSET_TABLE_". */ static symbolS *GOT_symbol; @@ -2706,7 +2713,10 @@ build_vex_prefix (const insn_template *t) i.tm = t[1]; } - vector_length = i.tm.opcode_modifier.vex == VEX256 ? 1 : 0; + if (i.tm.opcode_modifier.vex == VEXScalar) + vector_length = avxscalar; + else + vector_length = i.tm.opcode_modifier.vex == VEX256 ? 1 : 0; switch ((i.tm.base_opcode >> 8) & 0xff) { @@ -7868,6 +7878,7 @@ const char *md_shortopts = "qn"; #define OPTION_MOLD_GCC (OPTION_MD_BASE + 9) #define OPTION_MSSE2AVX (OPTION_MD_BASE + 10) #define OPTION_MSSE_CHECK (OPTION_MD_BASE + 11) +#define OPTION_MAVXSCALAR (OPTION_MSSE_CHECK + 11) struct option md_longopts[] = { @@ -7886,6 +7897,7 @@ struct option md_longopts[] = {"mold-gcc", no_argument, NULL, OPTION_MOLD_GCC}, {"msse2avx", no_argument, NULL, OPTION_MSSE2AVX}, {"msse-check", required_argument, NULL, OPTION_MSSE_CHECK}, + {"mavxscalar", required_argument, NULL, OPTION_MAVXSCALAR}, {NULL, no_argument, NULL, 0} }; size_t md_longopts_size = sizeof (md_longopts); @@ -8096,6 +8108,15 @@ md_parse_option (int c, char *arg) as_fatal (_("Invalid -msse-check= option: `%s'"), arg); break; + case OPTION_MAVXSCALAR: + if (strcasecmp (arg, "128") == 0) + avxscalar = vex128; + else if (strcasecmp (arg, "256") == 0) + avxscalar = vex256; + else + as_fatal (_("Invalid -mavxscalar= option: `%s'"), arg); + break; + default: return 0; } @@ -8220,6 +8241,9 @@ md_show_usage (FILE *stream) -msse-check=[none|error|warning]\n\ check SSE instructions\n")); fprintf (stream, _("\ + -mavxscalar=[128|256] encode scalar AVX instructions with specific vector\n\ + length\n")); + fprintf (stream, _("\ -mmnemonic=[att|intel] use AT&T/Intel mnemonic\n")); fprintf (stream, _("\ -msyntax=[att|intel] use AT&T/Intel syntax\n")); |