Update TargetTriple Format Info

[neerajbadlani]

Summary

It would be good to have what target triple means and its format in the documentation .

[echristo]

Do it. LGTM.

Thanks :)

-eric

[t.p.northover]

Isn't the object format there too now?

[echristo]

That's considered "system" the same way that bare metal elf is -elf.

[neerajbadlani]

<abi> is the object format

Source:
http://clang.llvm.org/docs/CrossCompilation.html

The triple has the general format <arch><sub>-<vendor>-<sys>-<abi>, where:
arch = x86, arm, thumb, mips, etc.
sub = for ex. on ARM: v5, v6m, v7a, v7m, etc.
vendor = pc, apple, nvidia, ibm, etc.
sys = none, linux, win32, darwin, cuda, etc.
abi = eabi, gnu, android, macho, elf, etc.

[echristo]

Ah right, inverted those fields. :)

Thanks.

-eric

[neerajbadlani]

Hi Eric , I dont have commit rights yet, and I cant figure out code owners from the CODE_OWNERS.txt .

Please if you can commit these changes , or forward these changes to the code_owners.
D6535 , D6507 , D6543

Thanks

[mcrosier]

Committed r223473.

include/llvm/IR/Module.h

   Materializer;                   ///< Used to materialize GlobalValues
   std::string ModuleID;           ///< Human readable identifier for the module
   std::string TargetTriple;       ///< Platform target triple Module compiled on
+                                  ///< Format:<arch><sub>-<vendor>-<sys>-<abi>
   void *NamedMDSymTab;            ///< NamedMDNode names.
   // Allow lazy initialization in const method.
   mutable RandomNumberGenerator *RNG; ///< The random number generator for this module.