[RS6000] PR88346, Inconsistent list of CPUs supported after r266502

This patch removes the %e error for AIX, since it seems there has been
no attempt to keep cpu support up to date for AIX, and adds missing
entries to ASM_CPU_SPEC in rs6000.h.  The rs64a->rs64 name change
happened a long time ago as a fix for PR20813 (git commit c92b4c3f5b).

	PR 88346
	* config/rs6000/rs6000.h (ASM_CPU_SPEC): Correct %e message.  Handle
	-mcpu=rs64, not -mcpu=rs64a.  Handle -mcpu=powerpc64 and -mcpu=titan.
	* config/rs6000/driver-rs6000.c (asm_names): Similarly.
	* config/rs6000/aix71.h (ASM_CPU_SPEC): Delete %e message.  Handle
	-mcpu=rs64, not -mcpu=rs64a.
	* config/rs6000/aix72.h (ASM_CPU_SPEC): Likewise.

From-SVN: r267375

gcc/ChangeLog

+2018-12-23  Alan Modra  <amodra@gmail.com>
+
+	PR 88346
+	* config/rs6000/rs6000.h (ASM_CPU_SPEC): Correct %e message.  Handle
+	-mcpu=rs64, not -mcpu=rs64a.  Handle -mcpu=powerpc64 and -mcpu=titan.
+	* config/rs6000/driver-rs6000.c (asm_names): Similarly.
+	* config/rs6000/aix71.h (ASM_CPU_SPEC): Delete %e message.  Handle
+	-mcpu=rs64, not -mcpu=rs64a.
+	* config/rs6000/aix72.h (ASM_CPU_SPEC): Likewise.
+
 2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>
 
 	* lto-wrapper.c (tool_cleanup): Don’t report ficticious temp files.

gcc/config/rs6000/aix71.h

@@ -77,7 +77,7 @@ do {									\
   mcpu=power4: -mpwr4; \
   mcpu=power3: -m620; \
   mcpu=powerpc: -mppc; \
-  mcpu=rs64a: -mppc; \
+  mcpu=rs64: -mppc; \
   mcpu=603: -m603; \
   mcpu=603e: -m603; \
   mcpu=604: -m604; \
@@ -88,8 +88,7 @@ do {									\
   !mcpu*: %{mvsx: -mpwr6; \
 	    maltivec: -m970; \
 	    maix64|mpowerpc64: -mppc64; \
-	    : %(asm_default)}; \
-  :%eMissing -mcpu option in ASM_SPEC_CPU?\n} \
+	    : %(asm_default)}} \
 -many"
 
 #undef	ASM_DEFAULT_SPEC

gcc/config/rs6000/aix72.h

@@ -77,7 +77,7 @@ do {									\
   mcpu=power4: -mpwr4; \
   mcpu=power3: -m620; \
   mcpu=powerpc: -mppc; \
-  mcpu=rs64a: -mppc; \
+  mcpu=rs64: -mppc; \
   mcpu=603: -m603; \
   mcpu=603e: -m603; \
   mcpu=604: -m604; \
@@ -88,8 +88,7 @@ do {									\
   !mcpu*: %{mvsx: -mpwr6; \
 	    maltivec: -m970; \
 	    maix64|mpowerpc64: -mppc64; \
-	    : %(asm_default)}; \
-  :%eMissing -mcpu option in ASM_SPEC_CPU?\n} \
+	    : %(asm_default)}} \
 -many"
 
 #undef	ASM_DEFAULT_SPEC

gcc/config/rs6000/driver-rs6000.c

@@ -449,7 +449,7 @@ static const struct asm_name asm_names[] = {
   { "power8",	"-mpwr8" },
   { "power9",	"-mpwr9" },
   { "powerpc",	"-mppc" },
-  { "rs64a",	"-mppc" },
+  { "rs64",	"-mppc" },
   { "603",	"-m603" },
   { "603e",	"-m603" },
   { "604",	"-m604" },
@@ -477,8 +477,9 @@ static const struct asm_name asm_names[] = {
   { "power9",	"-mpower9" },
   { "a2",	"-ma2" },
   { "powerpc",	"-mppc" },
+  { "powerpc64", "-mppc64" },
   { "powerpc64le", "%{mpower9-vector:-mpower9;:-mpower8}" },
-  { "rs64a",	"-mppc64" },
+  { "rs64",	"-mppc64" },
   { "401",	"-mppc" },
   { "403",	"-m403" },
   { "405",	"-m405" },
@@ -519,6 +520,7 @@ static const struct asm_name asm_names[] = {
   { "e500mc64",	"-me500mc64" },
   { "e5500",	"-me5500" },
   { "e6500",	"-me6500" },
+  { "titan",	"-mtitan" },
   { NULL,	"\
 %{mpower9-vector: -mpower9; \
   mpower8-vector|mcrypto|mdirect-move|mhtm: -mpower8; \

gcc/config/rs6000/rs6000.h

@@ -87,9 +87,10 @@
   mcpu=power4: -mpower4; \
   mcpu=power3: -mppc64; \
   mcpu=powerpc: -mppc; \
+  mcpu=powerpc64: -mppc64; \
   mcpu=a2: -ma2; \
   mcpu=cell: -mcell; \
-  mcpu=rs64a: -mppc64; \
+  mcpu=rs64: -mppc64; \
   mcpu=401: -mppc; \
   mcpu=403: -m403; \
   mcpu=405: -m405; \
@@ -130,11 +131,12 @@
   mcpu=e500mc64: -me500mc64; \
   mcpu=e5500: -me5500; \
   mcpu=e6500: -me6500; \
+  mcpu=titan: -mtitan; \
   !mcpu*: %{mpower9-vector: -mpower9; \
 	    mpower8-vector|mcrypto|mdirect-move|mhtm: -mpower8; \
 	    mvsx: -mpower7; \
 	    mpowerpc64: -mppc64;: %(asm_default)}; \
-  :%eMissing -mcpu option in ASM_SPEC_CPU?\n} \
+  :%eMissing -mcpu option in ASM_CPU_SPEC?\n} \
 %{mvsx: -mvsx -maltivec; maltivec: -maltivec} \
 -many"