Sync with external/gpl3/gcc:
https://mail-index.netbsd.org/source-changes/2023/07/18/msg146078.html
----
gcc: Fix peephole optimization bug for sh3 (PR port-sh3/56311)

Cherry-picked from upstream:
https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=4dbb3af1efe55174a714d15c2994cf2842ef8c28
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101469

Now, the PR confirmed fixed. No regression observed for full ATF run on
landisk (compared with GCC built with this peephole optimization being
removed by hand).

We thank Oleg Endo, the author of the upstream commit.

Also thanks hgutch@ and uwe@ for analysis.

merge GCC 10.4 into gcc.old.

branches: 1.11.2;
GCC git commit 91f66e78cc141da77ff9e0e3c8519e1af3f26c07[1] introduced
a regression in sh. In addition to the intended change (based on the
commit message), an apparently unintended change was made, inverting a
comparison. This broke sh builds and our workaround (so far) was to
compile xlint/lint1 with -O0.

Revert the comparison to what it was before and remove the -O0 hack
from xlint/lint1.

[1] https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=91f66e78cc141da77ff9e0e3c8519e1af3f26c07

merge GCC 9.3 into gcc.old.

merge GCC 8.4 into gcc.old.

merge gcc 7.4 into gcc.old part 3 (last?)

delete GCC 6.5. every platform has been on GCC 7 for a while now.

merge GCC 6.4 into gcc.old.

branches: 1.5.2; 1.5.4;
merge GCC 5.4 into gcc.old.

Remove gcc.old now it is no longer used.

branches: 1.3.2;
re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

merge GCC 10.4 into gcc.old.

GCC git commit 91f66e78cc141da77ff9e0e3c8519e1af3f26c07[1] introduced
a regression in sh. In addition to the intended change (based on the
commit message), an apparently unintended change was made, inverting a
comparison. This broke sh builds and our workaround (so far) was to
compile xlint/lint1 with -O0.

Revert the comparison to what it was before and remove the -O0 hack
from xlint/lint1.

[1] https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=91f66e78cc141da77ff9e0e3c8519e1af3f26c07

merge GCC 9.3 into gcc.old.

merge GCC 8.4 into gcc.old.

merge gcc 7.4 into gcc.old part 3 (last?)

delete GCC 6.5. every platform has been on GCC 7 for a while now.

merge GCC 6.4 into gcc.old.

branches: 1.5.2; 1.5.4;
merge GCC 5.4 into gcc.old.

Remove gcc.old now it is no longer used.

branches: 1.3.2;
re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

GCC git commit 91f66e78cc141da77ff9e0e3c8519e1af3f26c07[1] introduced
a regression in sh. In addition to the intended change (based on the
commit message), an apparently unintended change was made, inverting a
comparison. This broke sh builds and our workaround (so far) was to
compile xlint/lint1 with -O0.

Revert the comparison to what it was before and remove the -O0 hack
from xlint/lint1.

[1] https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=91f66e78cc141da77ff9e0e3c8519e1af3f26c07

merge GCC 9.3 into gcc.old.

merge GCC 8.4 into gcc.old.

merge gcc 7.4 into gcc.old part 3 (last?)

delete GCC 6.5. every platform has been on GCC 7 for a while now.

merge GCC 6.4 into gcc.old.

branches: 1.5.2; 1.5.4;
merge GCC 5.4 into gcc.old.

Remove gcc.old now it is no longer used.

branches: 1.3.2;
re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

merge GCC 9.3 into gcc.old.

merge GCC 8.4 into gcc.old.

merge gcc 7.4 into gcc.old part 3 (last?)

delete GCC 6.5. every platform has been on GCC 7 for a while now.

merge GCC 6.4 into gcc.old.

branches: 1.5.2; 1.5.4;
merge GCC 5.4 into gcc.old.

Remove gcc.old now it is no longer used.

branches: 1.3.2;
re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

merge GCC 8.4 into gcc.old.

merge gcc 7.4 into gcc.old part 3 (last?)

delete GCC 6.5. every platform has been on GCC 7 for a while now.

merge GCC 6.4 into gcc.old.

branches: 1.5.2; 1.5.4;
merge GCC 5.4 into gcc.old.

Remove gcc.old now it is no longer used.

branches: 1.3.2;
re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

merge gcc 7.4 into gcc.old part 3 (last?)

delete GCC 6.5. every platform has been on GCC 7 for a while now.

merge GCC 6.4 into gcc.old.

branches: 1.5.2; 1.5.4;
merge GCC 5.4 into gcc.old.

Remove gcc.old now it is no longer used.

branches: 1.3.2;
re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

merge GCC 6.4 into gcc.old.

branches: 1.5.2;
merge GCC 5.4 into gcc.old.

Remove gcc.old now it is no longer used.

branches: 1.3.2;
re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

merge GCC 5.4 into gcc.old.

Remove gcc.old now it is no longer used.

branches: 1.3.2;
re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

re-merge GCC 4.8.5 (part 1)

delete GCC 4.5.

branches: 1.1.1;
Initial revision

import GCC 4.8.5 as gcc.old, in prepartion to update GCC.

branches: 1.1.1.1.4; 1.1.1.1.6; 1.1.1.1.8;
import the -current GCC 4.5 sources as gcc.old in preparation for
upgrading the normal GCC to 4.8.

this tree has had ChangeLog entries removed, as well as all the
other components we delete, and "only" weighs in around 140MB now.

Rebase to HEAD as of a few days ago.

file sh.md was added on branch tls-maxphys on 2014-08-19 23:57:29 +0000

delete gcc 4.5, as requested by mrg in ticket #674

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")

file sh.md was added on branch yamt-pagecache on 2014-05-22 15:58:01 +0000