[Bug testsuite/98280] New: [11 regression] gcc.target/powerpc/fold-vec-logical-ors-char.c fails after t11-5958 with assembler output differences

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98280

            Bug ID: 98280
           Summary: [11 regression]
                    gcc.target/powerpc/fold-vec-logical-ors-char.c fails
                    after t11-5958 with assembler output differences
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

g:0bd675183d94e6bca100c3aaaf87ee9676fb3c26, r11-5958

FAIL: gcc.target/powerpc/fold-vec-logical-ors-char.c scan-assembler-times
\\\\mxxlnor\\\\M 2
FAIL: gcc.target/powerpc/fold-vec-logical-ors-char.c scan-assembler-times
\\\\mxxlor\\\\M 6
FAIL: gcc.target/powerpc/fold-vec-logical-ors-int.c scan-assembler-times
\\\\mxxlnor\\\\M 2
FAIL: gcc.target/powerpc/fold-vec-logical-ors-int.c scan-assembler-times
\\\\mxxlor\\\\M 6
FAIL: gcc.target/powerpc/fold-vec-logical-ors-longlong.c scan-assembler-times
\\\\mxxlnor\\\\M 6
FAIL: gcc.target/powerpc/fold-vec-logical-ors-longlong.c scan-assembler-times
\\\\mxxlor\\\\M 6
FAIL: gcc.target/powerpc/fold-vec-logical-ors-short.c scan-assembler-times
\\\\mxxlnor\\\\M 2
FAIL: gcc.target/powerpc/fold-vec-logical-ors-short.c scan-assembler-times
\\\\mxxlor\\\\M 6
FAIL: gcc.target/powerpc/fold-vec-logical-other-char.c scan-assembler-times
\\\\mxxlnand\\\\M 6
FAIL: gcc.target/powerpc/fold-vec-logical-other-int.c scan-assembler-times
\\\\mxxlnand\\\\M 6
FAIL: gcc.target/powerpc/fold-vec-logical-other-longlong.c scan-assembler-times
\\\\mxxlnand\\\\M 6
FAIL: gcc.target/powerpc/fold-vec-logical-other-short.c scan-assembler-times
\\\\mxxlnand\\\\M 6

The differences are all similar

*** fold-vec-logical-ors-char.r11-5957.s        Mon Dec 14 10:08:59 2020
--- fold-vec-logical-ors-char.r11-5958.s        Mon Dec 14 10:08:35 2020
***************
*** 298,306 ****
  .L.test6_nor:
  .LFB13:
        .cfi_startproc
!       xxlnor 34,34,35
        li 9,0
        lxvw4x 32,0,9
        vaddubm 2,2,0
        stxvw4x 34,0,9
        blr
--- 298,308 ----
  .L.test6_nor:
  .LFB13:
        .cfi_startproc
!       xxlor 34,34,35
        li 9,0
        lxvw4x 32,0,9
+       vsububm 2,0,2
+       vspltisw 0,-1
        vaddubm 2,2,0
        stxvw4x 34,0,9

*** fold-vec-logical-ors-int.r11-5957.s Mon Dec 14 10:15:44 2020
--- fold-vec-logical-ors-int.r11-5958.s Mon Dec 14 10:15:25 2020
***************
*** 298,306 ****
  .L.test6_nor:
  .LFB13:
        .cfi_startproc
!       xxlnor 34,34,35
        li 9,0
        lxvw4x 32,0,9
        vadduwm 2,2,0
        stxvw4x 34,0,9
        blr
--- 298,308 ----
  .L.test6_nor:
  .LFB13:
        .cfi_startproc
!       xxlor 34,34,35
        li 9,0
        lxvw4x 32,0,9
+       vsubuwm 2,0,2
+       vspltisw 0,-1
        vadduwm 2,2,0
        stxvw4x 34,0,9
        blr