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4 Commits

Author SHA1 Message Date
Evan Cheng
97b5beb7fe Allow machine-cse to look across MBB boundary when cse'ing instructions that 
define physical registers. It's currently very restrictive, only catching
cases where the CE is in an immediate (and only) predecessor. But it catches
a surprising large number of cases.

rdar://10660865


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147827 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-10 02:02:58 +00:00
Evan Cheng
2b4e727c6f Re-apply 105308 with fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105502 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-04 23:28:13 +00:00
Bob Wilson
3844173f6e Revert 105308. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105399 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 18:28:31 +00:00
Evan Cheng
9d709a8edb Enable machine cse of instructions which define physical registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105308 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 01:08:27 +00:00