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-rw-r--r--gcc/ChangeLog6
-rw-r--r--gcc/fold-const.c24
-rw-r--r--gcc/testsuite/ChangeLog5
-rw-r--r--gcc/testsuite/g++.dg/pr83979.c7
4 files changed, 30 insertions, 12 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1b64db3..9c313b3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-01-24 Richard Sandiford <richard.sandiford@linaro.org>
+
+ PR tree-optimization/83979
+ * fold-const.c (fold_comparison): Use constant_boolean_node
+ instead of boolean_{true,false}_node.
+
2018-01-24 Jan Hubicka <hubicka@ucw.cz>
* ipa-profile.c (ipa_propagate_frequency_1): Fix logic skipping calls
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 1ea3766..744c355 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -8572,39 +8572,39 @@ fold_comparison (location_t loc, enum tree_code code, tree type,
{
case EQ_EXPR:
if (known_eq (bitpos0, bitpos1))
- return boolean_true_node;
+ return constant_boolean_node (true, type);
if (known_ne (bitpos0, bitpos1))
- return boolean_false_node;
+ return constant_boolean_node (false, type);
break;
case NE_EXPR:
if (known_ne (bitpos0, bitpos1))
- return boolean_true_node;
+ return constant_boolean_node (true, type);
if (known_eq (bitpos0, bitpos1))
- return boolean_false_node;
+ return constant_boolean_node (false, type);
break;
case LT_EXPR:
if (known_lt (bitpos0, bitpos1))
- return boolean_true_node;
+ return constant_boolean_node (true, type);
if (known_ge (bitpos0, bitpos1))
- return boolean_false_node;
+ return constant_boolean_node (false, type);
break;
case LE_EXPR:
if (known_le (bitpos0, bitpos1))
- return boolean_true_node;
+ return constant_boolean_node (true, type);
if (known_gt (bitpos0, bitpos1))
- return boolean_false_node;
+ return constant_boolean_node (false, type);
break;
case GE_EXPR:
if (known_ge (bitpos0, bitpos1))
- return boolean_true_node;
+ return constant_boolean_node (true, type);
if (known_lt (bitpos0, bitpos1))
- return boolean_false_node;
+ return constant_boolean_node (false, type);
break;
case GT_EXPR:
if (known_gt (bitpos0, bitpos1))
- return boolean_true_node;
+ return constant_boolean_node (true, type);
if (known_le (bitpos0, bitpos1))
- return boolean_false_node;
+ return constant_boolean_node (false, type);
break;
default:;
}
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index af42b95..b5ecce0 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-01-24 Richard Sandiford <richard.sandiford@linaro.org>
+
+ PR tree-optimization/83979
+ * g++.dg/pr83979.c: New test.
+
2018-01-24 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* gcc.dg/lto/20110201-1_0.c: Remove explicit -mfloat-abi=softfp
diff --git a/gcc/testsuite/g++.dg/pr83979.c b/gcc/testsuite/g++.dg/pr83979.c
new file mode 100644
index 0000000..a39b1ea
--- /dev/null
+++ b/gcc/testsuite/g++.dg/pr83979.c
@@ -0,0 +1,7 @@
+/* { dg-compile } */
+
+int
+foo (char* p)
+{
+ return p + 1000 < p;
+}