for "thumb" and add a check for V6T2.

llvm-svn: 73905

caller-saved register.

llvm-svn: 73901

llvm-svn: 73734

ABI. The missing piece is support for putting "homogeneous aggregates"
into registers.

Patch by Sandeep Patel!

llvm-svn: 73095

llvm-svn: 72698

llvm-svn: 72593

llvm-svn: 72337

llvm-svn: 72335

ARM target now also recognize triplets like thumbv6-apple-darwin and set thumb mode and arch subversion. Eventually thumb triplets will go way and replaced with function notes.

llvm-svn: 66435

llvm-svn: 66365

llvm-svn: 45418

llvm-svn: 34521

llvm-svn: 34245

llvm-svn: 33363

llvm-svn: 33353