[Bug target/112962] [14 Regression] ICE: SIGSEGV in operator() (recog.h:431) with -fexceptions -mssse3 and __builtin_ia32_pabsd128()

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112962

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Of course, yet another option is:
--- gcc/config/i386/i386.cc     2023-12-12 08:54:39.821148670 +0100
+++ gcc/config/i386/i386.cc     2023-12-12 11:07:03.795286363 +0100
@@ -19377,7 +19377,10 @@ ix86_gimple_fold_builtin (gimple_stmt_it
     do_shift:
       gcc_assert (n_args >= 2);
       if (!gimple_call_lhs (stmt))
-       break;
+       {
+         gsi_replace (gsi, gimple_build_nop (), false);
+         return true;
+       }
       arg0 = gimple_call_arg (stmt, 0);
       arg1 = gimple_call_arg (stmt, 1);
       elems = TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg0));
@@ -19523,7 +19526,10 @@ ix86_gimple_fold_builtin (gimple_stmt_it
     case IX86_BUILTIN_PABSD256_MASK:
       gcc_assert (n_args >= 1);
       if (!gimple_call_lhs (stmt))
-       break;
+       {
+         gsi_replace (gsi, gimple_build_nop (), false);
+         return true;
+       }
       arg0 = gimple_call_arg (stmt, 0);
       elems = TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg0));
       /* For masked ABS, only optimize if the mask is all ones.  */
(and I wonder why all the gsi_replace calls in that function are with false,
IMHO they should use true).