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3 Commits

Author SHA1 Message Date
Michael Liao da22b30be5 Fix PR15355 
- Clear 'mayStore' flag when loading from the atomic variable before the
  spin loop
- Clear kill flag from one use to multiple use in registers forming the
  address to that atomic variable
- don't use a physical register as live-in register in BB (neither entry
  nor landing pad.) by copying it into virtual register

(patch by Cameron Zwarich)

llvm-svn: 176538
 2013-03-06 00:17:04 +00:00
Eli Friedman f1518216fd Error out on CodeGen of unaligned load/store. Fix test so it isn't accidentally testing that case. 
llvm-svn: 139641
 2011-09-13 20:50:54 +00:00
Eli Friedman 9c73a57b20 Hook up 64-bit atomic load/store on x86-32. I plan to write more efficient implementations eventually. 
llvm-svn: 138505
 2011-08-24 22:33:28 +00:00