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* [gcc r13-1342] rtl-optimization/106082 - preserve EH note for no non-local goto
@ 2022-06-29 12:00 Richard Biener
0 siblings, 0 replies; only message in thread
From: Richard Biener @ 2022-06-29 12:00 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:0282c4acf720e4cc073cf95594aa890444c5ca82
commit r13-1342-g0282c4acf720e4cc073cf95594aa890444c5ca82
Author: Richard Biener <rguenther@suse.de>
Date: Tue Jun 28 13:08:33 2022 +0200
rtl-optimization/106082 - preserve EH note for no non-local goto
The following makes sure we preserve EH notes on call insns that
indicate the call doesn't perform a non-local goto when distributing
notes after combining insns.
2022-06-28 Richard Biener <rguenther@suse.de>
PR rtl-optimization/106082
* combine.cc (distribute_notes): Preserve notes when
they indicate a call doesn't perform a non-local goto.
Diff:
---
gcc/combine.cc | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/gcc/combine.cc b/gcc/combine.cc
index a8305273e44..a5fabf397f7 100644
--- a/gcc/combine.cc
+++ b/gcc/combine.cc
@@ -14218,8 +14218,10 @@ distribute_notes (rtx notes, rtx_insn *from_insn, rtx_insn *i3, rtx_insn *i2,
gcc_assert (from_insn == i3);
/* We are making sure there is a single effective REG_EH_REGION
note and it's valid to put it on i3. */
- if (!insn_could_throw_p (from_insn))
- /* Throw away stra notes on insns that can never throw. */
+ if (!insn_could_throw_p (from_insn)
+ && !(lp_nr == INT_MIN && can_nonlocal_goto (from_insn)))
+ /* Throw away stray notes on insns that can never throw or
+ make a nonlocal goto. */
;
else
{
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