[Bug target/120050] [15/16 Regression] ICE bootstrapping on mips64el with --with-arch=gs464 --with-build-config=bootstrap-O3 --enable-checking=yes,extra

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120050

--- Comment #4 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
As a hack I disabled ext-dce for MIPS by default:

diff --git a/gcc/config/mips/mips.cc b/gcc/config/mips/mips.cc
index 24a28dcf817..cf4784c48bb 100644
--- a/gcc/config/mips/mips.cc
+++ b/gcc/config/mips/mips.cc
@@ -20993,6 +20993,10 @@ mips_option_override (void)
     REAL_MODE_FORMAT (SFmode) = &spu_single_format;

   mips_register_frame_header_opt ();
+
+  /* FIXME: PR120050 */
+  if (!OPTION_SET_P (flag_ext_dce))
+    flag_ext_dce = 0;
 }

 /* Swap the register information for registers I and I + 1, which

And then 15.1.0 bootstraps fine.