https://gcc.gnu.org/g:70480055636c2ca79761cb4440e930daa16bb7aa
commit r15-1607-g70480055636c2ca79761cb4440e930daa16bb7aa
Author: Thomas Schwinge <tschwi...@baylibre.com>
Date: Tue Jun 25 10:55:41 2024 +0200
rs6000: Properly default-disable late-combine passes [PR106594, PR115622,
PR115633]
..., so that it also works for '__attribute__ ((optimize("[...]")))' etc.
PR target/106594
PR target/115622
PR target/115633
gcc/
* config/rs6000/rs6000.cc (rs6000_option_override_internal): Move
default-disable of late-combine passes from here...
(rs6000_override_options_after_change): ... to here.
Diff:
---
gcc/config/rs6000/rs6000.cc | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
index cd14e5a34ed..71fe31297cf 100644
--- a/gcc/config/rs6000/rs6000.cc
+++ b/gcc/config/rs6000/rs6000.cc
@@ -3434,6 +3434,14 @@ rs6000_override_options_after_change (void)
/* If we are inserting ROP-protect instructions, disable shrink wrap. */
if (rs6000_rop_protect)
flag_shrink_wrap = 0;
+
+ /* One of the late-combine passes runs after register allocation
+ and can match define_insn_and_splits that were previously used
+ only before register allocation. Some of those define_insn_and_splits
+ use gen_reg_rtx unconditionally. Disable late-combine by default
+ until the define_insn_and_splits are fixed. */
+ if (!OPTION_SET_P (flag_late_combine_instructions))
+ flag_late_combine_instructions = 0;
}
#ifdef TARGET_USES_LINUX64_OPT
@@ -4771,14 +4779,6 @@ rs6000_option_override_internal (bool global_init_p)
targetm.expand_builtin_va_start = NULL;
}
- /* One of the late-combine passes runs after register allocation
- and can match define_insn_and_splits that were previously used
- only before register allocation. Some of those define_insn_and_splits
- use gen_reg_rtx unconditionally. Disable late-combine by default
- until the define_insn_and_splits are fixed. */
- if (!OPTION_SET_P (flag_late_combine_instructions))
- flag_late_combine_instructions = 0;
-
rs6000_override_options_after_change ();
/* If not explicitly specified via option, decide whether to generate indexed
