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[v2,0/2] tree-optimization: Add bitop reduction simplifications against zero [PR125442]

Message ID 20260603085303.7353-1-souradiptodas6@gmail.com
Headers
Series tree-optimization: Add bitop reduction simplifications against zero [PR125442] |

Message

Souradipto Das June 3, 2026, 8:51 a.m. UTC 
  Hi Andrew,

This is version 2 of the patch series to introduce bitwise reduction
simplifications against zero in match.pd, resolving PR125442.

Changes from v1:
        -Added 2 new testcases called int-bwise-opt-3.c and int-bwise-opt-4.c

Regression tested on x86_64-pc-linux-gnu.
Verified targeted test suite compliance via dejagnu:
  - gcc.dg/int-bwise-opt-*.c: 12 expected passes (including 4 new passes 
    from int-bwise-opt-3.c and int-bwise-opt-4.c).

Souradipto Das (2):
  tree-optimization: Add bitop reduction simplifications against zero
  testsuite: Add new testcases for bitop reduction simplifications

 gcc/match.pd                           | 9 +++++++++
 gcc/testsuite/gcc.dg/int-bwise-opt-3.c | 9 +++++++++
 gcc/testsuite/gcc.dg/int-bwise-opt-4.c | 9 +++++++++
 3 files changed, 27 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/int-bwise-opt-3.c
 create mode 100644 gcc/testsuite/gcc.dg/int-bwise-opt-4.c