[gcc(refs/vendors/ARM/heads/morello)] vrp: Fix ICE for pointer cap<->noncap casts

[Matthew Malcomson <matmal01@gcc.gnu.org>]

https://gcc.gnu.org/g:7b533cd785ed59adb3bdd5d49a0b3fcb43624301

commit 7b533cd785ed59adb3bdd5d49a0b3fcb43624301
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Mon Mar 14 18:10:58 2022 +0000

    vrp: Fix ICE for pointer cap<->noncap casts
    
    vrp_insert::find_assert_locations_in_bb has code to register
    assertions for operands of a statement, which we protected
    against capabilities.  However, it also has code to register
    assertions for the sources of conversions, and those need to
    be protected against capabilities too.

Diff:
---
 gcc/tree-vrp.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c
index 0a5ab8c579b..19bf6acc7ef 100644
--- a/gcc/tree-vrp.c
+++ b/gcc/tree-vrp.c
@@ -2926,8 +2926,6 @@ vrp_insert::find_assert_locations_in_bb (basic_block bb)
       /* See if we can derive an assertion for any of STMT's operands.  */
       FOR_EACH_SSA_TREE_OPERAND (op, stmt, i, SSA_OP_USE)
 	{
-	  if (capability_type_p (TREE_TYPE (op)))
-	    continue;
 	  tree value;
 	  enum tree_code comp_code;
 
@@ -2966,13 +2964,16 @@ vrp_insert::find_assert_locations_in_bb (basic_block bb)
 		      /* Note we want to register the assert for the
 			 operand of the NOP_EXPR after SI, not after the
 			 conversion.  */
-		      if (live.live_on_block_p (t, bb))
+		      if (live.live_on_block_p (t, bb)
+			  && !capability_type_p (TREE_TYPE (t)))
 			register_new_assert_for (t, t, comp_code, value,
 						 bb, NULL, si);
 		    }
 		}
 
-	      register_new_assert_for (op, op, comp_code, value, bb, NULL, si);
+	      if (!capability_type_p (TREE_TYPE (op)))
+		register_new_assert_for (op, op, comp_code, value,
+					 bb, NULL, si);
 	    }
 	}