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x86: introduce PadLock predicate

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By, at least for now, (ab)using the PrefixRepe attribute, the other two
PadLock checks can be simplified.
This commit is contained in:
Jan Beulich
2025-10-10 09:26:44 +02:00
parent 5690a49ac7
commit 6e3954c79e
1 changed files with 10 additions and 11 deletions
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21
gas/config/tc-i386.c
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@@ -4111,6 +4111,13 @@ want_disp32 (const insn_template *t)
|| t->opcode_modifier.size == SIZE32));
}
static INLINE bool is_padlock (const insn_template *t)
{
/* (Ab)use the PrefixRepe attribute of PadLock insns as long as no
others use it. */
return t->opcode_modifier.prefixok == PrefixRepe;
}
static int
intel_float_operand (const char *mnemonic)
{
@@ -7414,9 +7421,7 @@ i386_assemble (char *line)
if ((is_any_vex_encoding (&i.tm) && i.tm.opcode_space != SPACE_MAP4)
|| i.tm.operand_types[i.imm_operands].bitfield.class >= RegMMX
|| i.tm.operand_types[i.imm_operands + 1].bitfield.class >= RegMMX
/* (Ab)use the PrefixRepe attribute of PadLock insns as long as no
others use it. */
|| i.tm.opcode_modifier.prefixok == PrefixRepe)
|| is_padlock(&i.tm))
{
/* Check for data size prefix on VEX/XOP/EVEX encoded, SIMD, and
PadLock insns. */
@@ -12185,10 +12190,7 @@ add_branch_prefix_frag_p (const struct last_insn *last_insn)
if (!align_branch_power
|| !align_branch_prefix_size
|| now_seg == absolute_section
|| is_cpu (&i.tm, CpuPadLock)
|| is_cpu (&i.tm, CpuPadLockRNG2)
|| is_cpu (&i.tm, CpuPadLockPHE2)
|| is_cpu (&i.tm, CpuPadLockXMODX)
|| is_padlock (&i.tm)
|| !cpu_arch_flags.bitfield.cpui386)
return 0;
@@ -12567,10 +12569,7 @@ output_insn (const struct last_insn *last_insn)
add_prefix (0xf2);
break;
case PREFIX_0XF3:
if ((!is_cpu (&i.tm, CpuPadLock)
&& !is_cpu (&i.tm, CpuPadLockRNG2)
&& !is_cpu (&i.tm, CpuPadLockPHE2)
&& !is_cpu (&i.tm, CpuPadLockXMODX))
if (!is_padlock (&i.tm)
|| (i.prefix[REP_PREFIX] != 0xf3))
add_prefix (0xf3);
break;