[Bug tree-optimization/108639] [13 Regression] ICE on valid code at -O1 and above: in decompose, at wide-int.h:984 since r13-5578

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108639

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ok then.
I won't test my patch then, the testcases from it were:
--- gcc/testsuite/gcc.c-torture/compile/pr108638.c.jj   2022-11-21
10:04:00.210677046 +0100
+++ gcc/testsuite/gcc.c-torture/compile/pr108638.c      2023-02-02
16:51:06.082371450 +0100
@@ -0,0 +1,12 @@
+/* PR tree-optimization/108638 */
+
+long long a;
+int b;
+
+void
+foo (void)
+{
+  for (a = 0; a < __SIZEOF_LONG_LONG__ * __CHAR_BIT__; a++)
+    if (b)
+      b |= a << a;
+}
--- gcc/testsuite/gcc.c-torture/compile/pr108639.c.jj   2023-02-02
16:26:44.113600462 +0100
+++ gcc/testsuite/gcc.c-torture/compile/pr108639.c      2023-02-02
16:26:23.309902211 +0100
@@ -0,0 +1,11 @@
+/* PR tree-optimization/108639 */
+
+long long a;
+
+int
+main ()
+{
+  a = a ? 0 || 0 % 0 : 0;
+  a = a << a;
+  return 0;
+}