[PATCH] code refactoring on ARMTargetInfo class

[Alexandros Lamprineas]

REPOSITORY
  rL LLVM

================
Comment at: lib/Basic/Targets.cpp:4338
@@ +4337,3 @@
+    ArchProfile = llvm::ARMTargetParser::parseArchProfile(ArchName);
+    ArchVersion = llvm::ARMTargetParser::parseArchVersion(ArchName);
+ 
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rengolin wrote:
> You should also set IsThumb and ShouldUseInlineAtomic
Setting IsThumb in setCPU causes regressions. It doesn't make sense to me but setCPU changes the ISA from thumb to arm.

http://reviews.llvm.org/D10839

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