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3 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
b95c102c2f Heed spill slot alignment on ARM. 
Use the spill slot alignment as well as the local variable alignment to
determine when the stack needs to be realigned. This works now that the
ARM target can always realign the stack by using a base pointer.

Still respect the ARMBaseRegisterInfo::canRealignStack() function
vetoing a realigned stack.  Don't use aligned spill code in that case.

llvm-svn: 146997
 2011-12-20 22:15:04 +00:00
Evan Cheng
68132d8093 ARM target code clean up. Check for iOS, not Darwin where it makes sense. 
llvm-svn: 146981
 2011-12-20 18:26:50 +00:00
Chad Rosier
46addb9e07 If fast-isel fails, remove dead instructions generated during the failed 
attempt.  

llvm-svn: 145425
 2011-11-29 19:40:47 +00:00