Recognize armv7a and friends as aliases for armv7-a etc. for the purpose
of architecture naming.

llvm-svn: 198043
diff --git a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 209741a..073d6c8 100644
--- a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -8119,6 +8119,8 @@
   unsigned ID = StringSwitch<unsigned>(Arch)
 #define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
     .Case(NAME, ARM::ID)
+#define ARM_ARCH_ALIAS(NAME, ID) \
+    .Case(NAME, ARM::ID)
 #include "MCTargetDesc/ARMArchName.def"
     .Default(ARM::INVALID_ARCH);
 
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMArchName.def b/llvm/lib/Target/ARM/MCTargetDesc/ARMArchName.def
index 37e814e..9f007a0 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMArchName.def
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMArchName.def
@@ -36,10 +36,15 @@
 ARM_ARCH_NAME("armv6-m", ARMV6M,  "6-M",     v6_M)
 ARM_ARCH_NAME("armv7",   ARMV7,   "7",       v7)
 ARM_ARCH_NAME("armv7-a", ARMV7A,  "7-A",     v7)
+ARM_ARCH_ALIAS("armv7a", ARMV7A)
 ARM_ARCH_NAME("armv7-r", ARMV7R,  "7-R",     v7)
+ARM_ARCH_ALIAS("armv7r", ARMV7R)
 ARM_ARCH_NAME("armv7-m", ARMV7M,  "7-M",     v7)
+ARM_ARCH_ALIAS("armv7m", ARMV7M)
 ARM_ARCH_NAME("armv8-a", ARMV8A,  "8-A",     v8)
+ARM_ARCH_ALIAS("armv8a", ARMV8A)
 ARM_ARCH_NAME("iwmmxt",  IWMMXT,  "iwmmxt",  v5TE)
 ARM_ARCH_NAME("iwmmxt2", IWMMXT2, "iwmmxt2", v5TE)
 
 #undef ARM_ARCH_NAME
+#undef ARM_ARCH_ALIAS
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMArchName.h b/llvm/lib/Target/ARM/MCTargetDesc/ARMArchName.h
index d0de9cc..34b9fc1 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMArchName.h
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMArchName.h
@@ -17,6 +17,7 @@
   INVALID_ARCH = 0
 
 #define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) , ID
+#define ARM_ARCH_ALIAS(NAME, ID) /* empty */
 #include "ARMArchName.def"
 };
 
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
index 2d24978..39bcbf3 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp
@@ -71,6 +71,7 @@
     break;
 #define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
   case ARM::ID: return NAME;
+#define ARM_ARCH_ALIAS(NAME, ID) /* empty */
 #include "ARMArchName.def"
   }
   return NULL;
@@ -83,6 +84,7 @@
     break;
 #define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
   case ARM::ID: return DEFAULT_CPU_NAME;
+#define ARM_ARCH_ALIAS(NAME, ID) /* empty */
 #include "ARMArchName.def"
   }
   return NULL;
@@ -95,6 +97,7 @@
     break;
 #define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
   case ARM::ID: return ARMBuildAttrs::DEFAULT_CPU_ARCH;
+#define ARM_ARCH_ALIAS(NAME, ID) /* empty */
 #include "ARMArchName.def"
   }
   return 0;