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RA: Use caller save equivalent memory only for LRA

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Recently I submitted a patch to reuse memory with constant address for
caller saves optimization for constant or pure function call.  It
seems to work only for targets using LRA instead of the old reload
pass.  So the patch switches off this optimization when the old reload
pass is used.

        PR middle-end/108754

gcc/ChangeLog:

	* ira.cc (update_equiv_regs): Set up ira_reg_equiv for
	valid_combine only when ira_use_lra_p is true.
This commit is contained in:
Vladimir N. Makarov 2023-02-10 12:17:07 -05:00
parent 3c5154d0f0
commit 7757567358
1 changed files with 1 additions and 1 deletions
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gcc/ira.cc
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@ -3773,7 +3773,7 @@ update_equiv_regs (void)
{
note = set_unique_reg_note (insn, REG_EQUIV, replacement);
}
else
else if (ira_use_lra_p)
{
/* We still can use this equivalence for caller save
optimization in LRA. Mark this. */