[Bug middle-end/97054] [10/11 Regression] Runtime segfault with attached test code since r10-3559

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97054

H.J. Lu  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED

--- Comment #4 from H.J. Lu  ---
Fixed for GCC 10.3 by

commit 6959f60cb276ad530917c2d039d9edc19fefa216
Author: Richard Sandiford 
Date:   Fri Sep 18 16:55:45 2020 +0100

ira: Fix elimination for global hard FPs [PR97054]

If the hard frame pointer is being used as a global register,
we should skip the usual handling for eliminations.  As the
comment says, the register cannot in that case be eliminated
(or eliminated to) and is already marked live where appropriate.

Doing this removes the duplicate error for gcc.target/i386/pr82673.c.
The “cannot be used in 'asm' here” message is meant to be for asm
statements rather than register asms, and the function that the
error is reported against doesn't use asm.

gcc/
2020-09-18  Richard Sandiford  

PR middle-end/97054
* ira.c (ira_setup_eliminable_regset): Skip the special elimination
handling of the hard frame pointer if the hard frame pointer is
fixed.

gcc/testsuite/
2020-09-18  H.J. Lu  
Richard Sandiford  

PR middle-end/97054
* g++.target/i386/pr97054.C: New test.
* gcc.target/i386/pr82673.c: Remove redundant extra message.

(cherry picked from commit 3c7c5f1d4a4b8328fb4c07483cdbfe4ea7762155)

[Bug middle-end/97054] [10/11 Regression] Runtime segfault with attached test code since r10-3559

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97054

--- Comment #3 from H.J. Lu  ---
Fixed in GCC 11 by

commit 3c7c5f1d4a4b8328fb4c07483cdbfe4ea7762155
Author: Richard Sandiford 
Date:   Fri Sep 18 16:55:45 2020 +0100

ira: Fix elimination for global hard FPs [PR91957]

[Bug middle-end/97054] [10/11 Regression] Runtime segfault with attached test code since r10-3559

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97054

H.J. Lu  changed:

   What|Removed |Added

 CC||vmakarov at redhat dot com
   Keywords||patch

--- Comment #2 from H.J. Lu  ---
A patch is posted at

https://gcc.gnu.org/pipermail/gcc-patches/2020-September/553968.html

[Bug middle-end/97054] [10/11 Regression] Runtime segfault with attached test code since r10-3559

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97054

--- Comment #1 from H.J. Lu  ---
Created attachment 49220
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49220&action=edit
A patch

I am testing this.