[Bug target/108933] [11/12/13/14 Regression] Missing rev16 detection

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108933

--- Comment #5 from GCC Commits  ---
The master branch has been updated by Richard Earnshaw :

https://gcc.gnu.org/g:bad991a1c5960e90c4686a9362a1258ef29e195b

commit r14-8499-gbad991a1c5960e90c4686a9362a1258ef29e195b
Author: Matthieu Longo 
Date:   Mon Jan 29 15:54:35 2024 +

arm: Add pattern for bswap + rotate -> rev16 [Bug 108933]

The rev16 pattern was not recognised anymore as a change in the bswap
tree pass was introducing a new GIMPLE form, not recognized by the
assembly final transformation pass.

Also, fix the output patterns for arm_rev16si_alt[12] to correctly
handle the instructions being made conditional.

More details in the PR.

gcc/ChangeLog:

PR target/108933
* config/arm/arm.md (arm_rev16si2): Convert to define_insn.
Correct generated RTL.
(arm_rev16si2_alt1): Correctly handle conditional execution.
(arm_rev16si2_alt2): Likewise.

gcc/testsuite/ChangeLog:

PR target/108933
* gcc.target/arm/rev16.c: Moved to...
* gcc.target/arm/rev16_1.c: ...here.
* gcc.target/arm/rev16_2.c: New test to check that rev16 is
emitted.

[Bug target/108933] [11/12/13/14 Regression] Missing rev16 detection

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108933

Richard Biener  changed:

   What|Removed |Added

   Target Milestone|10.5|11.5

--- Comment #4 from Richard Biener  ---
GCC 10 branch is being closed.