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[PR124452, LRA]: Move point of skipping postponed insn

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Patch for PR115042 skipped processing postponed insns after possible
generation of address reloads for the postponed insns.  The reload
insns were lost in the code and this resulted in wrong code generation.

To fix this the patch moves skipping the postponed insn before any
reload generation.

gcc/ChangeLog:

	PR rtl-optimization/124452
	* lra-constraints.cc (curr_insn_transform): Move return on the
	postponed insn before any reload generation.
This commit is contained in:
Vladimir N. Makarov
2026-03-12 16:47:16 -04:00
parent c7f44415a2
commit 772ec2d96e
1 changed files with 11 additions and 12 deletions
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23
gcc/lra-constraints.cc
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@@ -4452,7 +4452,14 @@ curr_insn_transform (bool check_only_p)
}
}
/* Reload address registers and displacements. We do it before
/* We process equivalences before ignoring postponed insns on the current
constraint sub-pass but before any reload insn generation for the
postponed insn. */
if (! check_only_p
&& bitmap_bit_p (&lra_postponed_insns, INSN_UID (curr_insn)))
return true;
/* Reload address registers and displacements. We do it before
finding an alternative because of memory constraints. */
before = after = NULL;
for (i = 0; i < n_operands; i++)
@@ -4470,17 +4477,9 @@ curr_insn_transform (bool check_only_p)
we chose previously may no longer be valid. */
lra_set_used_insn_alternative (curr_insn, LRA_UNKNOWN_ALT);
if (! check_only_p)
{
if (bitmap_bit_p (&lra_postponed_insns, INSN_UID (curr_insn)))
/* Processing insn constraints were postponed. Do nothing, the insn
will be processed on the next constraint sub-pass after assignment
of reload pseudos in the insn. */
return true;
if (curr_insn_set != NULL_RTX
&& check_and_process_move (&change_p, &sec_mem_p))
return change_p;
}
if (! check_only_p && curr_insn_set != NULL_RTX
&& check_and_process_move (&change_p, &sec_mem_p))
return change_p;
try_swapped: