[gcc r15-150] Implement operator_cst for prange.

[Aldy Hernandez via Gcc-cvs]

https://gcc.gnu.org/g:a91fd7b4342dbeaf1d2514beaee3af0bb5680b81

commit r15-150-ga91fd7b4342dbeaf1d2514beaee3af0bb5680b81
Author: Aldy Hernandez <al...@redhat.com>
Date:   Wed Mar 20 07:55:57 2024 +0100

    Implement operator_cst for prange.
    
    gcc/ChangeLog:
    
            * range-op-mixed.h: Add overloaded declarations for pointer 
variants.
            * range-op-ptr.cc (operator_cst::fold_range): New.
            (operator_cst::pointers_handled_p): New.

Diff:
---
 gcc/range-op-mixed.h |  4 ++++
 gcc/range-op-ptr.cc  | 23 +++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/gcc/range-op-mixed.h b/gcc/range-op-mixed.h
index 60aaea9563d..04c8acbd94a 100644
--- a/gcc/range-op-mixed.h
+++ b/gcc/range-op-mixed.h
@@ -380,9 +380,13 @@ public:
   bool fold_range (irange &r, tree type,
                   const irange &op1, const irange &op2,
                   relation_trio rel = TRIO_VARYING) const final override;
+  bool fold_range (prange &r, tree type,
+                  const prange &op1, const prange &op2,
+                  relation_trio rel = TRIO_VARYING) const final override;
   bool fold_range (frange &r, tree type,
                   const frange &op1, const frange &op2,
                   relation_trio = TRIO_VARYING) const final override;
+  bool pointers_handled_p (range_op_dispatch_type, unsigned) const final 
override;
 };
 
 
diff --git a/gcc/range-op-ptr.cc b/gcc/range-op-ptr.cc
index 08419bfc798..e59e278cbd7 100644
--- a/gcc/range-op-ptr.cc
+++ b/gcc/range-op-ptr.cc
@@ -683,6 +683,29 @@ operator_identity::pointers_handled_p 
(range_op_dispatch_type type,
     }
 }
 
+bool
+operator_cst::fold_range (prange &r, tree type ATTRIBUTE_UNUSED,
+                         const prange &lh,
+                         const prange & ATTRIBUTE_UNUSED,
+                         relation_trio) const
+{
+  r = lh;
+  return true;
+}
+
+bool
+operator_cst::pointers_handled_p (range_op_dispatch_type type,
+                                 unsigned dispatch) const
+{
+  switch (type)
+    {
+    case DISPATCH_FOLD_RANGE:
+      return dispatch == RO_PPP;
+    default:
+      return true;
+    }
+}
+
 // Initialize any pointer operators to the primary table
 
 void