From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 7 Dec 2017 17:06:08 +0000 (+0100)
Subject: re PR middle-end/83164 (internal compiler error: verify_gimple failed)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=47f5f7e74920fe65f5ebe4737a9c70c34178990a;p=gcc.git

re PR middle-end/83164 (internal compiler error: verify_gimple failed)

	PR middle-end/83164
	* tree-cfg.c (verify_gimple_assign_binary): Don't require
	types_compatible_p, just that TYPE_MODE is the same.

	* gcc.c-torture/compile/pr83164.c: New test.

From-SVN: r255470
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f81665f650f..966810f15d5 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-12-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/83164
+	* tree-cfg.c (verify_gimple_assign_binary): Don't require
+	types_compatible_p, just that TYPE_MODE is the same.
+
 2017-12-07  Martin Sebor  <msebor@redhat.com>
 
 	PR c/81544
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 4a4406a3405..199cc283185 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2017-12-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/83164
+	* gcc.c-torture/compile/pr83164.c: New test.
+
 2017-12-07  Martin Sebor  <msebor@redhat.com>
 
 	PR c/81544
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr83164.c b/gcc/testsuite/gcc.c-torture/compile/pr83164.c
new file mode 100644
index 00000000000..e153e3b6fc0
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr83164.c
@@ -0,0 +1,7 @@
+/* PR middle-end/83164 */
+
+__PTRDIFF_TYPE__
+foo (void)
+{
+  return (char *) foo - (char *) 0x1230;
+}
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index e313df90443..4d09b2cc99d 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -4007,7 +4007,9 @@ verify_gimple_assign_binary (gassign *stmt)
       {
 	if (!POINTER_TYPE_P (rhs1_type)
 	    || !POINTER_TYPE_P (rhs2_type)
-	    || !types_compatible_p (rhs1_type, rhs2_type)
+	    /* Because we special-case pointers to void we allow difference
+	       of arbitrary pointers with the same mode.  */
+	    || TYPE_MODE (rhs1_type) != TYPE_MODE (rhs2_type)
 	    || TREE_CODE (lhs_type) != INTEGER_TYPE
 	    || TYPE_UNSIGNED (lhs_type)
 	    || TYPE_PRECISION (lhs_type) != TYPE_PRECISION (rhs1_type))