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5 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 a486cb972f Convert a bunch more tests over to the new atomic instructions. 
llvm-svn: 140582
 2011-09-26 23:15:09 +00:00
Eric Christopher 2eca9d5ddf Be less specific about register allocation ordering. 
llvm-svn: 134308
 2011-07-02 04:06:41 +00:00
Eric Christopher a8a56f7e5c TargetConstant immediates won't be placed into registers so tighten 
up the valid constant check earlier.

rdar://9692967

llvm-svn: 134286
 2011-07-01 23:04:38 +00:00
Eric Christopher c932173773 Fix a small thinko for constant i64 lock/orq optimization where we 
we didn't have an opcode for 64-bit constant or expressions.

Fixes rdar://9692967

llvm-svn: 134121
 2011-06-30 00:48:30 +00:00