* config/pdp11/pdp11.h (TARGET_HAS_NO_HW_DIVIDE): Define.

From-SVN: r266439

* config/pdp11/pdp11.h (TARGET_HAS_NO_HW_DIVIDE): Define.
From-SVN: r266439
537db3a2 · Paul Koning · Paul Koning · 6d9434e5 · 537db3a2 · 537db3a2
Commit 537db3a2 authored Nov 25, 2018 by Paul Koning Committed by Paul Koning Nov 25, 2018
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gcc/config/pdp11/pdp11.h
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2018-11-25  Paul Koning  <ni1d@arrl.net>
+
+	* config/pdp11/pdp11.h (TARGET_HAS_NO_HW_DIVIDE): Define.
+
 2018-11-25  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

 	* doc/sourcebuild.texi (Effective-Target Keywords, Environment
--- a/gcc/config/pdp11/pdp11.h
+++ b/gcc/config/pdp11/pdp11.h
@@ -143,6 +143,11 @@ extern const struct real_format pdp11_d_format;
 /* Define this if move instructions will actually fail to work
   when given unaligned data.  */
 #define STRICT_ALIGNMENT 1
+
+/* "HW_DIVIDE" actually means 64 by 32 bit divide.  While some PDP11
+   models have hardware divide, it is for 32 by 16 bits only, so we
+   call this platform "no hardware divide".  */
+#define TARGET_HAS_NO_HW_DIVIDE 1

 /* Standard register usage.  */