[Bug tree-optimization/63266] New: [5 Regression] Test regression: gcc.target/sh/pr53568-1.c

[thopre01 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63266

            Bug ID: 63266
           Summary: [5 Regression] Test regression:
                    gcc.target/sh/pr53568-1.c
           Product: gcc
           Version: 5.0
               URL: https://gcc.gnu.org/ml/gcc-patches/2014-06/msg00777.ht
                    ml
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: thopre01 at gcc dot gnu.org
                CC: olegendo at gcc dot gnu.org, su at cs dot ucdavis.edu,
                    thomas.preudhomme at arm dot com, thopre01 at gcc dot gnu.org
        Depends on: 61306

+++ This bug was initially created as a clone of Bug #61306 +++

This bug is to track the problem raised in comment 10 of bug #61306. Extract of
the comment:

It seems that after this commit, one SH bswap32 test started to fail.
Comparing the two test reports:
https://gcc.gnu.org/ml/gcc-testresults/2014-06/msg00961.html
https://gcc.gnu.org/ml/gcc-testresults/2014-06/msg01086.html

shows a new failure for gcc.target/sh/pr53568-1.c.
The function

int
test_func_02 (int a)
{
  /* 1x swap.w
     2x swap.b  */
  return (((a >> 0) & 0xFF) << 24)
     | (((a >> 8) & 0xFF) << 16)
     | (((a >> 16) & 0xFF) << 8)
     | (((a >> 24) & 0xFF) << 0);
}

now fails to produce a bswap32.