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x86: Determine vector length from the last vector operand 

Determine VEX/EVEXE vector length from the last multi-length vector
operand.

	* config/tc-i386.c (build_vex_prefix): Determine vector
	length from the last multi-length vector operand.
	(build_evex_prefix): Likewise.
This commit is contained in:
H.J. Lu 2018-07-22 12:00:39 -07:00
parent 17cbafdbbe
commit c7213af9b3
2 changed files with 31 additions and 10 deletions
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6
gas/ChangeLog
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@ -1,3 +1,9 @@
2018-07-22 H.J. Lu <hongjiu.lu@intel.com>
* config/tc-i386.c (build_vex_prefix): Determine vector
length from the last multi-length vector operand.
(build_evex_prefix): Likewise.
2018-07-20 H.J. Lu <hongjiu.lu@intel.com>
* config/tc-i386.c (match_simd_size): Break long line.

35
gas/config/tc-i386.c
View File

@ -3363,10 +3363,12 @@ build_vex_prefix (const insn_template *t)
vector_length = 1;
else
{
unsigned int op;
int op;
/* Determine vector length from the last multi-length vector
operand. */
vector_length = 0;
for (op = 0; op < t->operands; ++op)
for (op = t->operands - 1; op >= 0; op--)
if (t->operand_types[op].bitfield.xmmword
&& t->operand_types[op].bitfield.ymmword
&& i.types[op].bitfield.ymmword)
@ -3611,20 +3613,31 @@ build_evex_prefix (void)
if (!i.tm.opcode_modifier.evex
|| i.tm.opcode_modifier.evex == EVEXDYN)
{
unsigned int op;
int op;
/* Determine vector length from the last multi-length vector
operand. */
vec_length = 0;
for (op = 0; op < i.tm.operands; ++op)
for (op = i.operands - 1; op >= 0; op--)
if (i.tm.operand_types[op].bitfield.xmmword
+ i.tm.operand_types[op].bitfield.ymmword
+ i.tm.operand_types[op].bitfield.zmmword > 1)
{
if (i.types[op].bitfield.zmmword)
i.tm.opcode_modifier.evex = EVEX512;
{
i.tm.opcode_modifier.evex = EVEX512;
break;
}
else if (i.types[op].bitfield.ymmword)
i.tm.opcode_modifier.evex = EVEX256;
{
i.tm.opcode_modifier.evex = EVEX256;
break;
}
else if (i.types[op].bitfield.xmmword)
i.tm.opcode_modifier.evex = EVEX128;
{
i.tm.opcode_modifier.evex = EVEX128;
break;
}
else if (i.broadcast && (int) op == i.broadcast->operand)
{
switch ((i.tm.operand_types[op].bitfield.dword ? 4 : 8)
@ -3640,12 +3653,14 @@ build_evex_prefix (void)
i.tm.opcode_modifier.evex = EVEX128;
break;
default:
continue;
abort ();
}
break;
}
continue;
break;
}
if (op < 0)
abort ();
}
switch (i.tm.opcode_modifier.evex)