Evan Cheng 4443642def - Revert some changes from 85044, 85045, and 85047 that broke x86_64 tests and ... bootstrapping. It's not safe to leave identity subreg_to_reg and insert_subreg around. - Relax register scavenging to allow use of partially "not-live" registers. It's common for targets to operate on registers where the top bits are undef. e.g. s0 = d0 = insert_subreg d0<undef>, s0, 1 ... = d0 When the insert_subreg is eliminated by the coalescer, the scavenger used to complain. The previous fix was to keep to insert_subreg around. But that's brittle and it's overly conservative when we want to use the scavenger to allocate registers. It's actually legal and desirable for other instructions to use the "undef" part of d0. e.g. s0 = d0 = insert_subreg d0<undef>, s0, 1 ... s1 = = s1 = d0 We probably need add a "partial-undef" marker on machine operand so the machine verifier would not complain. llvm-svn: 85091		2009-10-26 04:56:07 +00:00
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llvm	- Revert some changes from 85044, 85045, and 85047 that broke x86_64 tests and	2009-10-26 04:56:07 +00:00
llvm-c	Move DataTypes.h to include/llvm/System, update all users. This breaks the last	2009-10-26 01:35:46 +00:00