Debug Info: code clean up.

Remove the unneeded return values from createMemberDIE, constructEnumTypeDIE,
getOrCreateTemplateTypeParameterDIE, and getOrCreateTemplateValueParameterDIE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193285 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: code clean up.

Rename createMemberDIE to constructMemberDIE to match other construct functions
in CompileUnit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193286 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: code clean up.

Since we never insert DIE for DITemplateTypeParameter to a map, there is no need
to call getDIE in getOrCreateTemplateTypeParameterDIE. It is also renamed to
constructTemplateTypeParameterDIE to match with other construct functions
in CompileUnit.

Same applies to getOrCreateTemplateValueParameterDIE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193287 91177308-0d34-0410-b5e6-96231b3b80d8
(this is a corrected patch)

Calling _chkstk is required on ELF as well as COFF on Windows. Without 
_chkstk, functions requiring large stack crash in initialization code.

Previous code tested for COFF format but not Mach-O and this patch modifies 
the code to test for Windows OS (both Windows target and MingW target) 
but not Mach-O object format: Looks like macho environment was used to 
build some EFI code.
 
Credits to Andrew MacPherson.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193289 91177308-0d34-0410-b5e6-96231b3b80d8