[Bug target/118696] [15 Regression] qemu miscompilation on s390x since r15-7053

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118696

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
--- gcc/config/s390/vector.md.jj        2025-01-24 17:37:48.987458141 +0100
+++ gcc/config/s390/vector.md   2025-01-30 09:10:53.413542300 +0100
@@ -2166,7 +2166,7 @@ (define_insn_and_split "*vec_cmpgt<mode>
        (vec_duplicate:V2DI
         (vec_select:DI
          (match_dup 4)
-         (parallel [(const_int 1)]))))
+         (parallel [(const_int 0)]))))
    (set (match_dup 0)
        (subreg:<MODE> (match_dup 4) 0))]
 {
@@ -2198,7 +2198,7 @@ (define_insn_and_split "*vec_cmpgtu<mode
        (vec_duplicate:V2DI
         (vec_select:DI
          (match_dup 4)
-         (parallel [(const_int 1)]))))
+         (parallel [(const_int 0)]))))
    (set (match_dup 0)
        (subreg:<MODE> (match_dup 4) 0))]
 {
fixes this testcase, but let me work on a testcase that tests all the different
eq/ne/gt/le/gtu/leu possibilities for hi vs. low parts.