[Bug target/102069] New: [12 regression] New test case gcc.dg/vect/pr101145_3.c in r12-3136 fails on power 7

[Bug target/102069] New: [12 regression] New test case gcc.dg/vect/pr101145_3.c in r12-3136 fails on power 7

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102069

            Bug ID: 102069
           Summary: [12 regression] New test case gcc.dg/vect/pr101145_3.c
                    in r12-3136 fails on power 7
           Product: gcc
           Version: 9.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

g:3673dcf6d6baeb67bb70ff03d4cb3f92beed0075, r12-3136
make  -k check-gcc RUNTESTFLAGS="--target_board=unix'{-m64}'
vect.exp=gcc.dg/vect/pr101145_3.c"
FAIL: gcc.dg/vect/pr101145_3.c scan-tree-dump-times vect "vectorized 1 loops" 2
FAIL: gcc.dg/vect/pr101145_3.c -flto -ffat-lto-objects  scan-tree-dump-times
vect "vectorized 1 loops" 2
# of expected passes            4
# of unexpected failures        2

I only see this failure on power 7 for 64 bit.  Power 7 has some limitations on
vectors that may require the failing parts of the tests to be skipped there.

[Bug target/102069] [12 regression] New test case gcc.dg/vect/pr101145_3.c in r12-3136 fails on power 7

[guojiufu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102069

--- Comment #1 from Jiu Fu Guo <guojiufu at gcc dot gnu.org> ---
Thanks, Segher!

The test case could be updated.  The patch supports calculating the number of
iterations for the special condition(step to min/max), so we may just update to
the case to check if the "number of iterations" is there.
like:
diff --git a/gcc/testsuite/gcc.dg/vect/pr101145_3.c
b/gcc/testsuite/gcc.dg/vect/pr101145_3.c
index 99289afec0b..819e134c6e6 100644
--- a/gcc/testsuite/gcc.dg/vect/pr101145_3.c
+++ b/gcc/testsuite/gcc.dg/vect/pr101145_3.c
@@ -10,4 +10,4 @@

 #include "pr101145.inc"

-/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" } } */      
+/* { dg-final { scan-tree-dump-times "Symbolic number of iterations is" 2
"vect" } } */

[Bug target/102069] [12 regression] New test case gcc.dg/vect/pr101145_3.c in r12-3136 fails on power 7

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102069

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |12.0
            Version|9.4.1                       |12.0

[Bug target/102069] [12 regression] New test case gcc.dg/vect/pr101145_3.c in r12-3136 fails on power 7

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102069

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |clyon at gcc dot gnu.org

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 102072 has been marked as a duplicate of this bug. ***

[Bug target/102069] [12 regression] New test case gcc.dg/vect/pr101145_3.c in r12-3136 fails on power 7

[guojiufu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102069

Jiu Fu Guo <guojiufu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Jiu Fu Guo <guojiufu at gcc dot gnu.org> ---
Updated the case in the trunk with the requirement of vec_char_add.