From 4287e8168f89e90b3dff3a50f3ada40be53e0e01 Mon Sep 17 00:00:00 2001
From: Aldy Hernandez <aldyh@redhat.com>
Date: Wed, 9 Nov 2022 01:00:57 +0100
Subject: [PATCH] Implement op[12]_range operators for PLUS_EXPR and
MINUS_EXPR.
We can implement the op[12]_range entries for plus and minus in terms
of each other. These are adapted from the integer versions.
gcc/ChangeLog:
* range-op-float.cc (foperator_plus::op1_range): New.
(foperator_plus::op2_range): New.
(foperator_minus::op1_range): New.
(foperator_minus::op2_range): New.
---
gcc/range-op-float.cc | 45 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/gcc/range-op-float.cc b/gcc/range-op-float.cc
index d52e971f84eb..44db81c1c1ec 100644
--- a/gcc/range-op-float.cc
+++ b/gcc/range-op-float.cc
@@ -1862,6 +1862,29 @@ foperator_unordered_equal::op1_range (frange &r, tree type,
class foperator_plus : public range_operator_float
{
+ using range_operator_float::op1_range;
+ using range_operator_float::op2_range;
+public:
+ virtual bool op1_range (frange &r, tree type,
+ const frange &lhs,
+ const frange &op2,
+ relation_trio = TRIO_VARYING) const final override
+ {
+ if (lhs.undefined_p ())
+ return false;
+ range_op_handler minus (MINUS_EXPR, type);
+ if (!minus)
+ return false;
+ return minus.fold_range (r, type, lhs, op2);
+ }
+ virtual bool op2_range (frange &r, tree type,
+ const frange &lhs,
+ const frange &op1,
+ relation_trio = TRIO_VARYING) const final override
+ {
+ return op1_range (r, type, lhs, op1);
+ }
+private:
void rv_fold (REAL_VALUE_TYPE &lb, REAL_VALUE_TYPE &ub, bool &maybe_nan,
tree type,
const REAL_VALUE_TYPE &lh_lb,
@@ -1886,6 +1909,28 @@ class foperator_plus : public range_operator_float
class foperator_minus : public range_operator_float
{
+ using range_operator_float::op1_range;
+ using range_operator_float::op2_range;
+public:
+ virtual bool op1_range (frange &r, tree type,
+ const frange &lhs,
+ const frange &op2,
+ relation_trio = TRIO_VARYING) const final override
+ {
+ if (lhs.undefined_p ())
+ return false;
+ return fop_plus.fold_range (r, type, lhs, op2);
+ }
+ virtual bool op2_range (frange &r, tree type,
+ const frange &lhs,
+ const frange &op1,
+ relation_trio = TRIO_VARYING) const final override
+ {
+ if (lhs.undefined_p ())
+ return false;
+ return fold_range (r, type, op1, lhs);
+ }
+private:
void rv_fold (REAL_VALUE_TYPE &lb, REAL_VALUE_TYPE &ub, bool &maybe_nan,
tree type,
const REAL_VALUE_TYPE &lh_lb,
--
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