[Bug target/98537] [11 Regression] ICE in emit_move_insn since r11-5839

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98537

--- Comment #8 from Hongtao.liu <crazylht at gmail dot com> ---
Created attachment 50045
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50045&action=edit
Fix ICE: Don't generate integer mask comparision for 128/256-bits vector when
op_true/op_false are NULL or constm1_rtx/const0_rtx [PR98537]

I'm retesting this patch which is supposed to fix all performance and
correctness regressions caused by r10-5250.


in ix86_expand_sse_cmp/ix86_expand_int_sse_cmp

-  if (ix86_valid_mask_cmp_mode (cmp_ops_mode))
+  if (GET_MODE_SIZE (mode) == 64
+      || (ix86_valid_mask_cmp_mode (cmp_ops_mode)
+         /* When op_true and op_false is NULL, vector dest is required.  */
+         && op_true && op_false
+         /* Gimple sometimes transforms vec_cmpmn to vcondmn with
+            op_true/op_false as constm1_rtx/const0_rtx.
+            Don't generate integer mask comparison then.  */
+         && !((vector_all_ones_operand (op_true, GET_MODE (op_true))
+               && CONST0_RTX (GET_MODE (op_false)) == op_false)
+              || (vector_all_ones_operand (op_false, GET_MODE (op_false))
+                  && CONST0_RTX (GET_MODE (op_true)) == op_true))))