[gcc r13-1825] [PR middle-end/106432] Gracefully handle unsupported type in range_on_edge

[gcc r13-1825] [PR middle-end/106432] Gracefully handle unsupported type in range_on_edge

[Aldy Hernandez]

https://gcc.gnu.org/g:ca1e4b26c19351077db1d8e6ff1cb97f05bca79f

commit r13-1825-gca1e4b26c19351077db1d8e6ff1cb97f05bca79f
Author: Aldy Hernandez <aldyh@redhat.com>
Date:   Mon Jul 25 15:58:04 2022 +0200

    [PR middle-end/106432] Gracefully handle unsupported type in range_on_edge
    
    A cleaner approach to fix this PR has been suggested by Andrew, which
    is to just return false on range_on_edge for unsupported range types.
    
    Tested on x86-64 Linux.
    
            PR middle-end/106432
    
    gcc/ChangeLog:
    
            * gimple-range.cc (gimple_ranger::range_on_edge): Return false
            when the result range type is unsupported.

Diff:
---
 gcc/gimple-range.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gcc/gimple-range.cc b/gcc/gimple-range.cc
index 7ac48303e4e..eb347eee45b 100644
--- a/gcc/gimple-range.cc
+++ b/gcc/gimple-range.cc
@@ -201,7 +201,9 @@ bool
 gimple_ranger::range_on_edge (vrange &r, edge e, tree name)
 {
   Value_Range edge_range (TREE_TYPE (name));
-  gcc_checking_assert (r.supports_type_p (TREE_TYPE (name)));
+
+  if (!r.supports_type_p (TREE_TYPE (name)))
+    return false;
 
   // Do not process values along abnormal edges.
   if (e->flags & EDGE_ABNORMAL)