[PATCH] rs6000: Warn for deprecated options

[PATCH] rs6000: Warn for deprecated options

[Segher Boessenkool]

Some command-line options have been deprecated for a long time.  This
patch adds a warning for them, so that we can remove them in GCC 9
without surprising any users.


Segher


2018-02-25  Segher Boessenkool  <segher@kernel.crashing.org>

	* config/rs6000/rs6000.opt (mvrsave=no, mvrsave=yes, isel=no,
	isel=yes): Warn for these deprecated options.

---
 gcc/config/rs6000/rs6000.opt | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt
index 97419ae..28c6081 100644
--- a/gcc/config/rs6000/rs6000.opt
+++ b/gcc/config/rs6000/rs6000.opt
@@ -322,11 +322,11 @@ Target Report Var(TARGET_ALTIVEC_VRSAVE) Save
 Generate VRSAVE instructions when generating AltiVec code.
 
 mvrsave=no
-Target RejectNegative Alias(mvrsave) NegativeAlias
+Target RejectNegative Alias(mvrsave) NegativeAlias Warn(%<-mvrsave=no%> is deprecated; use %<-mno-vrsave%> instead)
 Deprecated option.  Use -mno-vrsave instead.
 
 mvrsave=yes
-Target RejectNegative Alias(mvrsave)
+Target RejectNegative Alias(mvrsave) Warn(%<-mvrsave=yes%> is deprecated; use %<-mvrsave%> instead)
 Deprecated option.  Use -mvrsave instead.
 
 mblock-move-inline-limit=
@@ -350,11 +350,11 @@ Target Report Mask(ISEL) Var(rs6000_isa_flags)
 Generate isel instructions.
 
 misel=no
-Target RejectNegative Alias(misel) NegativeAlias
+Target RejectNegative Alias(misel) NegativeAlias Warn(%<-misel=no%> is deprecated; use %<-mno-isel%> instead)
 Deprecated option.  Use -mno-isel instead.
 
 misel=yes
-Target RejectNegative Alias(misel)
+Target RejectNegative Alias(misel) Warn(%<-misel=yes%> is deprecated; use %<-misel%> instead)
 Deprecated option.  Use -misel instead.
 
 mdebug=
-- 
1.8.3.1