Commit Graph

60 Commits

Author SHA1 Message Date
Alkis Evlogimenos e3cec71bdc Add grow() member that grows the maps when the number of virtual
registers in the function has changed.

llvm-svn: 13893
2004-05-29 19:03:29 +00:00
Alkis Evlogimenos 31953c7a10 Add a spiller option to llc. A simple spiller will come soon. When we get CFG in the machine code represenation a global spiller will also be possible. Also document the linear scan register allocator but mark it as experimental for now.
llvm-svn: 12062
2004-03-01 23:18:15 +00:00
Alkis Evlogimenos b76d234ee9 Add the long awaited memory operand folding support for linear scan
llvm-svn: 12058
2004-03-01 20:05:10 +00:00
Alkis Evlogimenos e669caafe0 Rename member function to be consistent with the rest.
llvm-svn: 11898
2004-02-27 06:11:15 +00:00
Alkis Evlogimenos d8bace7f60 Add DenseMap template and actually use it for for mapping virtual regs
to objects.

llvm-svn: 11840
2004-02-25 21:55:45 +00:00
Alkis Evlogimenos 1dd872ce94 Move machine code rewriter and spiller outside the register
allocator.

The implementation is completely rewritten and now employs several
optimizations not exercised before. For example for 164.gzip we have
997 loads and 699 stores vs the 1221 loads and 880 stores we have
before.

llvm-svn: 11798
2004-02-24 08:58:30 +00:00
Alkis Evlogimenos 63aea0b6a5 Add predicates for checking if a virtual register has a physical
register mapping or a stack slot mapping.

llvm-svn: 11795
2004-02-24 06:30:36 +00:00
Alkis Evlogimenos 8b571a64ac Make enum private as it is an implementation detail.
llvm-svn: 11782
2004-02-23 23:49:40 +00:00
Alkis Evlogimenos ab77b05d8c Remove '4Virt' from member function names as it is obvious.
llvm-svn: 11781
2004-02-23 23:47:10 +00:00
Alkis Evlogimenos c794a9060f Refactor VirtRegMap out of RegAllocLinearScan as the first part of bug
251 (providing a generic machine code rewriter/spiller).

llvm-svn: 11780
2004-02-23 23:08:11 +00:00