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cfgrtl: Fix up -g vs. -g0 code generation -flto differences in fixup_reorder_chain [PR104589]

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This is similar to PR104237 and similarly to that, no testcase included
for the testsuite, as we don't have a framework to compile/link with
-g -flto and -g0 -flto and compare -fdump-final-insns= results from
the lto1 compilations.

With -flto, whether two location_t compare equal or not and just
express the same location is a lottery.

2022-03-02  Jakub Jelinek  <jakub@redhat.com>

	PR rtl-optimization/104589
	* cfgrtl.cc (fixup_reorder_chain): Use loc_equal instead of direct
	INSN_LOCATION comparison with goto_locus.
This commit is contained in:
Jakub Jelinek 2022-03-02 10:48:14 +01:00
parent 5f2e72db8c
commit 2e1b00367a
1 changed files with 2 additions and 2 deletions
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4
gcc/cfgrtl.cc
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@ -4090,7 +4090,7 @@ fixup_reorder_chain (void)
&& (!NONDEBUG_INSN_P (insn) || !INSN_HAS_LOCATION (insn)))
insn = PREV_INSN (insn);
if (insn != end
&& INSN_LOCATION (insn) == e->goto_locus)
&& loc_equal (INSN_LOCATION (insn), e->goto_locus))
continue;
if (simplejump_p (BB_END (e->src))
&& !INSN_HAS_LOCATION (BB_END (e->src)))
@ -4112,7 +4112,7 @@ fixup_reorder_chain (void)
while (insn != end && !NONDEBUG_INSN_P (insn))
insn = NEXT_INSN (insn);
if (insn != end && INSN_HAS_LOCATION (insn)
&& INSN_LOCATION (insn) == e->goto_locus)
&& loc_equal (INSN_LOCATION (insn), e->goto_locus))
continue;
}
nb = split_edge (e);