invoke.texi (mfix-rm7000, [...]): Document.

2013-11-19  Catherine Moore  <clm@codesourcery.com>

	* doc/invoke.texi (mfix-rm7000, mno-fix-rm7000): Document.
	* config/mips/mips.opt (mfix-rm7000): New option.
	* config/mips/mips.h (ASM_SPEC): Handle mfix-rm7000.
	* config/mips/mips.c (mips_reorg_process_insns): Disable
	noreorder for TARGET_FIX_RM7000.

From-SVN: r205054

gcc/ChangeLog

+2013-11-19  Catherine Moore  <clm@codesourcery.com>
+
+	* doc/invoke.texi (mfix-rm7000, mno-fix-rm7000): Document.
+	* config/mips/mips.opt (mfix-rm7000): New option.
+	* config/mips/mips.h (ASM_SPEC): Handle mfix-rm7000.
+	* config/mips/mips.c (mips_reorg_process_insns): Disable
+	noreorder for TARGET_FIX_RM7000.
+
 2013-11-19  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	* config/sh/sh-c.c: Fix typo in include of file attribs.h.

gcc/config/mips/mips.c

@@ -16076,10 +16076,13 @@ mips_reorg_process_insns (void)
   if (crtl->profile)
     cfun->machine->all_noreorder_p = false;
 
-  /* Code compiled with -mfix-vr4120 or -mfix-24k can't be all noreorder
-     because we rely on the assembler to work around some errata.
-     The r5900 too has several bugs.  */
-  if (TARGET_FIX_VR4120 || TARGET_FIX_24K || TARGET_MIPS5900)
+  /* Code compiled with -mfix-vr4120, -mfix-rm7000 or -mfix-24k can't be
+     all noreorder because we rely on the assembler to work around some
+     errata.  The R5900 too has several bugs.  */
+  if (TARGET_FIX_VR4120
+      || TARGET_FIX_RM7000
+      || TARGET_FIX_24K
+      || TARGET_MIPS5900)
     cfun->machine->all_noreorder_p = false;
 
   /* The same is true for -mfix-vr4130 if we might generate MFLO or

gcc/config/mips/mips.h

@@ -1167,6 +1167,7 @@ struct mips_cpu_info {
 %{meva} %{mno-eva} \
 %{msmartmips} %{mno-smartmips} \
 %{mmt} %{mno-mt} \
+%{mfix-rm7000} %{mno-fix-rm7000} \
 %{mfix-vr4120} %{mfix-vr4130} \
 %{mfix-24k} \
 %{noasmopt:-O0; O0|fno-delayed-branch:-O1; O*:-O2; :-O1} \

gcc/config/mips/mips.opt

@@ -165,6 +165,10 @@ mfix-r4400
 Target Report Mask(FIX_R4400)
 Work around certain R4400 errata
 
+mfix-rm7000
+Target Report Var(TARGET_FIX_RM7000)
+Work around certain RM7000 errata
+
 mfix-r10000
 Target Report Mask(FIX_R10000)
 Work around certain R10000 errata

gcc/doc/invoke.texi

@@ -796,7 +796,8 @@ Objective-C and Objective-C++ Dialects}.
 -mmad -mno-mad -mimadd -mno-imadd -mfused-madd  -mno-fused-madd  -nocpp @gol
 -mfix-24k -mno-fix-24k @gol
 -mfix-r4000  -mno-fix-r4000  -mfix-r4400  -mno-fix-r4400 @gol
--mfix-r10000 -mno-fix-r10000  -mfix-vr4120  -mno-fix-vr4120 @gol
+-mfix-r10000 -mno-fix-r10000  -mfix-rm7000 -mno-fix-rm7000 @gol
+-mfix-vr4120  -mno-fix-vr4120 @gol
 -mfix-vr4130  -mno-fix-vr4130  -mfix-sb1  -mno-fix-sb1 @gol
 -mflush-func=@var{func}  -mno-flush-func @gol
 -mbranch-cost=@var{num}  -mbranch-likely  -mno-branch-likely @gol
@@ -17462,6 +17463,12 @@ branch-likely instructions.  @option{-mfix-r10000} is the default when
 @option{-march=r10000} is used; @option{-mno-fix-r10000} is the default
 otherwise.
 
+@item -mfix-rm7000
+@itemx -mno-fix-rm7000
+@opindex mfix-rm7000
+Work around the RM7000 @code{dmult}/@code{dmultu} errata.  The
+workarounds are implemented by the assembler rather than by GCC@.
+
 @item -mfix-vr4120
 @itemx -mno-fix-vr4120
 @opindex mfix-vr4120