IRAs add_store_equivs is quadratic in the size of the function worst
case, disable it when -fno-expensive-optimizations which means at
-O1 and -Og.
Bootstrap and regtest running on x86_64-unknown-linux-gnu.
OK?
Thanks,
Richard.
* ira.cc (ira): Gate add_store_equivs on flag_expensive_optimizations.
---
gcc/ira.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/ira.cc b/gcc/ira.cc
index 3936456c4ed..5231f63398e 100644
--- a/gcc/ira.cc
+++ b/gcc/ira.cc
@@ -5739,7 +5739,7 @@ ira (FILE *f)
combine_and_move_insns ();
/* Gather additional equivalences with memory. */
- if (optimize)
+ if (optimize && flag_expensive_optimizations)
add_store_equivs ();
loop_optimizer_finalize ();
--
2.43.0
