From: Carl Love <carll@us.ibm.com>
Date: Tue, 31 Mar 2020 16:30:00 +0000 (-0500)
Subject: rs6000: Add command line and builtin compatibility check
X-Git-Tag: embedded-9-2020q2~60
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ab40918a3b6b9093930193fe8900d738858e75f;p=thirdparty%2Fgcc.git

rs6000: Add command line and builtin compatibility check

2020-03-31  Carl Love  <cel@us.ibm.com>

	backport of mainline commit

	commit 68dd57808f7c0147acdb5ca72c88ff655afcb0ce
	Author: Carl Love <carll@us.ibm.com>
	Date:   Fri Mar 20 18:15:05 2020 -0500

	whith change log typo fixed.

	PR target/87583
	* gcc/config/rs6000/rs6000.c (rs6000_option_override_internal):
	Add check for TARGET_FPRND for Power 7 or newer.
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 040c48d08298..d2b45c10a7d4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,15 @@
+2020-03-31  Carl Love  <cel@us.ibm.com>
+
+	Backport from mainline
+	  commit 68dd57808f7c0147acdb5ca72c88ff655afcb0ce
+	  Author: Carl Love <carll@us.ibm.com>
+	  Date:   Fri Mar 20 18:15:05 2020 -0500
+	with ChangeLog typo fixed.
+
+	PR target/87583
+	* gcc/config/rs6000/rs6000.c (rs6000_option_override_internal):
+	Add check for TARGET_FPRND for Power 7 or newer.
+
 2020-03-24  John David Anglin  <danglin@gcc.gnu.org>
 
 	PR lto/94249
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 5ec2b339df64..11d451293574 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4099,6 +4099,14 @@ rs6000_option_override_internal (bool global_init_p)
       rs6000_isa_flags &= ~OPTION_MASK_CRYPTO;
     }
 
+  if (!TARGET_FPRND && TARGET_VSX)
+    {
+      if (rs6000_isa_flags_explicit & OPTION_MASK_FPRND)
+	/* TARGET_VSX = 1 implies Power 7 and newer */
+	error ("%qs requires %qs", "-mvsx", "-mfprnd");
+      rs6000_isa_flags &= ~OPTION_MASK_FPRND;
+    }
+
   if (TARGET_DIRECT_MOVE && !TARGET_VSX)
     {
       if (rs6000_isa_flags_explicit & OPTION_MASK_DIRECT_MOVE)