50 lines
1.7 KiB
Diff
50 lines
1.7 KiB
Diff
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From 4965473a4211a9feb46a0d168180ab450cb18bcc Mon Sep 17 00:00:00 2001
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From: "Vladimir N. Makarov" <vmakarov@redhat.com>
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Date: Fri, 27 Oct 2023 08:28:24 -0400
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Subject: [PATCH 32/32] Add cost calculation for reg equivalence invariants
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My recent patch improving cost calculation for pseudos with equivalence
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resulted in failure of gcc.target/arm/eliminate.c on aarch64. This patch
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fixes this failure.
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gcc/ChangeLog:
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* ira-costs.cc: (get_equiv_regno, calculate_equiv_gains):
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Process reg equivalence invariants.
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---
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gcc/ira-costs.cc | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/gcc/ira-costs.cc b/gcc/ira-costs.cc
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index c79311783..d33104a30 100644
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--- a/gcc/ira-costs.cc
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+++ b/gcc/ira-costs.cc
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@@ -1777,6 +1777,7 @@ get_equiv_regno (rtx x, int ®no, rtx &subreg)
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}
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if (REG_P (x)
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&& (ira_reg_equiv[REGNO (x)].memory != NULL
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+ || ira_reg_equiv[REGNO (x)].invariant != NULL
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|| ira_reg_equiv[REGNO (x)].constant != NULL))
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{
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regno = REGNO (x);
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@@ -1819,6 +1820,7 @@ calculate_equiv_gains (void)
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for (regno = max_reg_num () - 1; regno >= FIRST_PSEUDO_REGISTER; regno--)
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if (ira_reg_equiv[regno].init_insns != NULL
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&& (ira_reg_equiv[regno].memory != NULL
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+ || ira_reg_equiv[regno].invariant != NULL
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|| (ira_reg_equiv[regno].constant != NULL
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/* Ignore complicated constants which probably will be placed
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in memory: */
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@@ -1869,6 +1871,8 @@ calculate_equiv_gains (void)
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if (subst == NULL)
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subst = ira_reg_equiv[regno].constant;
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+ if (subst == NULL)
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+ subst = ira_reg_equiv[regno].invariant;
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ira_assert (subst != NULL);
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mode = PSEUDO_REGNO_MODE (regno);
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ira_init_register_move_cost_if_necessary (mode);
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--
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2.28.0.windows.1
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