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Commit Graph

64 Commits

Author SHA1 Message Date
Chris Lattner
aab9196e79 Remove extraneous #includes, perform FIXME
llvm-svn: 5043
2002-12-15 18:15:24 +00:00
Chris Lattner
41ad5c9aff Fix borkness with not using MachineBasicBlocks in PHI nodes
llvm-svn: 5035
2002-12-15 08:02:51 +00:00
Misha Brukman
de680081ab Fixed a bug where moves due to phis were being neglected.
llvm-svn: 5019
2002-12-13 12:33:31 +00:00
Misha Brukman
1f57df5fad Need to insert all moves due to PHI nodes before *ALL* jumps in a predecessor
basic block, as there could be multiple.

llvm-svn: 5016
2002-12-13 11:55:59 +00:00
Misha Brukman
0bfbbc73f2 This should be more correct: invalidates physical registers that are used in
an instruction to avoid using them to allocate to other virtual registers.

llvm-svn: 5013
2002-12-13 11:33:22 +00:00
Misha Brukman
e694e406a4 Fixed bug with running out of registers. Also, reinstated namespace which
disappeared during the last checkin.

llvm-svn: 5007
2002-12-13 10:42:31 +00:00
Misha Brukman
af40b6adcd This should handle register allocating PHI nodes.
llvm-svn: 5002
2002-12-13 09:54:36 +00:00
Misha Brukman
e5a8dcc695 Start allocating stack space at [ebp-4] to not overwrite the return address.
Also make all loads & stores 4-byte aligned for performance. ;)

llvm-svn: 4982
2002-12-13 04:34:02 +00:00
Misha Brukman
12bec4ecef Take advantage of our knowledge of 2-address X86 instructions and
register-allocated them appropriately.

llvm-svn: 4976
2002-12-12 23:20:31 +00:00
Misha Brukman
8f56246d62 Added code generation for function prologues and epilogues.
llvm-svn: 4930
2002-12-04 23:58:08 +00:00
Misha Brukman
566bac5ec1 Fun arithmetic with iterators aimed at fixing a bug: inserting instructions
after the *current* instruction while keeping the iterator in the same
'logical' place.

llvm-svn: 4923
2002-12-04 19:24:45 +00:00
Misha Brukman
f13126a427 This should fix the bug seen with some registers not being allocated
correctly: skipping instructions by incorrectly incrementing the pointer.

Also adds support for building a reg-to-regclass map, and splits the function
for saving register to stack into two, one suitable for virtual registers
(which also assigns it a physical register) and one for simply storing back
physical registers.

llvm-svn: 4898
2002-12-03 23:15:19 +00:00
Misha Brukman
f776547336 * Abstracted out stack space allocation into its own function
* Added saving of register values to the stack

llvm-svn: 4858
2002-12-02 21:11:58 +00:00
Misha Brukman
021bf57248 A simple (spilling) register allocator.
llvm-svn: 4828
2002-11-22 22:44:32 +00:00