Commit Graph

5 Commits

Author SHA1 Message Date
Dan Gohman
a104d1eab2 Mark dead physregdefs dead immediately. This helps MachineSink and
MachineLICM and other things which run before LiveVariables is run.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85360 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28 01:13:53 +00:00
Evan Cheng
d36076e4a3 Turn on post-alloc scheduling for x86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84431 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18 19:57:27 +00:00
Dan Gohman
8c050fadf6 Add a CHECK line to check the position of the second divsd.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83009 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28 20:48:39 +00:00
Evan Cheng
0e6b590b91 Coalescer should not delete extract_subreg, insert_subreg, and subreg_to_reg of
physical registers. This is especially critical for the later two since they
start the live interval of a super-register. e.g.
%DO<def> = INSERT_SUBREG %D0<undef>, %S0<kill>, 1
If this instruction is eliminated, the register scavenger will not be happy as
D0 is not defined previously.
This fixes PR5055.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82968 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28 05:28:43 +00:00
Dan Gohman
a8fb336c2e Unbreak MachineLICM for instructions that reference RIP on x86-64 too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82825 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25 23:58:45 +00:00