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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/109566] [13/14 Regression] powerpc: unrecognizable insn
 for -mcpu=e6500, -mcpu=power3, ..., -mcpu=power10
Date: Mon, 24 Apr 2023 10:37:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109566

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
--- gcc/config/rs6000/rs6000.cc.jj      2023-04-04 10:33:47.433201866 +0200
+++ gcc/config/rs6000/rs6000.cc 2023-04-24 12:31:07.237031550 +0200
@@ -11409,7 +11409,16 @@ bool
 rs6000_is_valid_rotate_dot_mask (rtx mask, machine_mode mode)
 {
   int nb, ne;
-  return rs6000_is_valid_mask (mask, &nb, &ne, mode) && nb >=3D ne && ne >=
 0;
+  if (rs6000_is_valid_mask (mask, &nb, &ne, mode) && nb >=3D ne && ne > 0)
+    {
+      if (TARGET_64BIT)
+       return true;
+      /* *rotldi3_mask_dot requires for -m32 -mpowerpc64 that the mask is
+        <=3D 0x7ffffff.  */
+      return (UINTVAL (mask) << (63 - nb)) <=3D 0x7fffffff;
+    }
+  else
+    return false;
 }

 /* Return whether MASK (a CONST_INT) is a valid mask for any rlwinm, rldic=
l,
seems to fix this.=