1dfa97034d
Allow for fixed objects to reside in the local area, and if they don't to not
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clobber them by allocating other objects in the same space!
llvm-svn: 11454
2004-02-15 00:14:20 +00:00
6a35516dcc
Add back machine code deleter pass until we get a MachineCode pass
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that will be responsible for the creation of MachineFunctions and will
be required by all MachineFunctionPass passes.
llvm-svn: 11453
2004-02-15 00:03:15 +00:00
612ce0c47c
There is no reason to align the stack pointer if there are no callees of this function!
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llvm-svn: 11449
2004-02-14 20:10:59 +00:00
5a92240270
Use newly added next() and prior() utility functions.
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llvm-svn: 11430
2004-02-14 01:18:34 +00:00
ddcb4ad53e
Use std::numeric_limits<float>::infinity() instead of
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std::numeric_limits<float>::max() for weighting preallocated
intervals.
llvm-svn: 11427
2004-02-14 00:44:07 +00:00
8cdd0215bf
Remove getAllocatedRegNum(). Use getReg() instead.
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llvm-svn: 11393
2004-02-13 21:01:20 +00:00
de6a381691
Use getNumVirtualRegs().
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Whitespace cleanups.
llvm-svn: 11389
2004-02-13 18:20:47 +00:00
52440fd481
Refactor MachineFunction::print() into MachineBasicBlock::print().
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Add MachineBasicBlock::dump().
llvm-svn: 11364
2004-02-13 04:39:55 +00:00
e8f7c2f863
Add head-of-file comments and Doxygen comments. Tighten up a lot of whitespace.
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Rename SetMachineOperandConst's formal parameters to match other methods here.
Mark some methods as being used only by the SPARC back-end.
Fix a missing-paren bug in OutputValue().
llvm-svn: 11363
2004-02-13 04:39:32 +00:00
de8ac749fe
Add parent pointer to MachineInstr that points to owning
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MachineBasicBlock. Also change opcode to a short and numImplicitRefs
to an unsigned char so that overall MachineInstr's size stays the
same.
llvm-svn: 11357
2004-02-12 18:49:07 +00:00
6a597d6057
Rename the opCode instance variable to Opcode
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llvm-svn: 11348
2004-02-12 16:09:53 +00:00
6108d9d5ee
This field is never read
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llvm-svn: 11346
2004-02-12 16:04:49 +00:00
80da865f77
Change MachineBasicBlock's vector of MachineInstr pointers into an
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ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.
llvm-svn: 11340
2004-02-12 02:27:10 +00:00
0c3de446f6
getOpCode() --> getOpcode().
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llvm-svn: 11339
2004-02-12 01:34:05 +00:00
b21ec54e61
Add #include
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llvm-svn: 11285
2004-02-10 21:18:55 +00:00
5dd5be3ec3
Do not use MachineOperand::isVirtualRegister either!
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llvm-svn: 11283
2004-02-10 21:12:22 +00:00
373fba5c1d
Eliminate users of MachineOperand::isPhysicalRegister
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llvm-svn: 11278
2004-02-10 20:41:10 +00:00
2e1cbb735d
Move InstrSchedule's iterator begin/end methods inline.
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llvm-svn: 11239
2004-02-09 18:42:46 +00:00
312e3a28d2
Make SchedGraph::dump() use SchedGraphNodeCommon's const_iterator
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instead of randomly groping about inside its outEdges array.
Make SchedGraph::addDummyEdges() use getNumOutEdges() instead of
outEdges.size().
Get rid of ifdefed-out code in SchedGraph::buildGraph().
llvm-svn: 11238
2004-02-09 18:42:05 +00:00
80cbed4f61
Another nice speedup for the register allocator. This time, we replace
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the Virt2PhysRegMap std::map with an std::vector. This speeds up the
register allocator another (almost) 40%, from .72->.45s in a release build
of LLC on 253.perlbmk.
llvm-svn: 11219
2004-02-09 02:12:04 +00:00
bbd9a43d20
Ugh, perform an optimization that GCC should be able to do itself. This
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speeds up livevar from .48/.32s -> .45/.31s in LLC on perlbmk
llvm-svn: 11217
2004-02-09 01:43:23 +00:00
26407384ec
Only do stuff for the REAL number of physical registers we have, not 1024.
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This speeds up live variables a lot, from .60/.39s -> .47/.26s in LLC, for
the first/second pass respectively.
llvm-svn: 11216
2004-02-09 01:35:21 +00:00
490627a404
Change the PhysRegsUsed map into a dense array. Seeing that this is a mapping
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from physical registers, and they are always dense, it makes sense to not have
a ton of RBtree overhead. This change speeds up regalloclocal about ~30% on
253.perlbmk, from .35s -> .27s in the JIT (in LLC, it goes from .74 -> .55).
Now live variable analysis is the slowest codegen pass. Of course it doesn't
help that we have to run it twice, because regalloclocal doesn't update it,
but even if it did it would be the slowest pass (now it's just the 2x slowest
pass :(
llvm-svn: 11215
2004-02-09 01:26:13 +00:00
e82a70766e
Increase code clarity.
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llvm-svn: 11151
2004-02-06 18:08:18 +00:00
cd2e7ffcc6
Eliminate uneeded lookups by passing a Virt2PhysMap::iterator instead
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of the virtual register to certain functions.
llvm-svn: 11143
2004-02-06 03:15:40 +00:00
a97abeb342
Change live interval representation. Machine instructions now have two
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slots each. As a concequence they get numbered as 0, 2, 4 and so
on. The first slot is used for operand uses and the second for
defs. Here's an example:
0: A = ...
2: B = ...
4: C = A + B ;; last use of A
The live intervals should look like:
A = [1, 5)
B = [3, x)
C = [5, y)
llvm-svn: 11141
2004-02-05 22:55:25 +00:00
1165c1081e
We don't need to scan the blocks that we are live-in on every
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access. Rather we only have to do it on the creation of the interval.
llvm-svn: 11135
2004-02-05 20:45:40 +00:00
dd0c255d14
Added missing include.
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llvm-svn: 11129
2004-02-05 05:04:39 +00:00
327426411e
Modify the two address instruction pass to remove the duplicate
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operand of the instruction and thus simplify the register allocation.
llvm-svn: 11124
2004-02-04 22:17:40 +00:00
3d100ef0ca
When an instruction like: A += B had both A and B virtual registers
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spilled, A was loaded from its stack location twice. This fixes the bug.
llvm-svn: 11093
2004-02-03 01:13:07 +00:00
74b26f77a3
Revert changes. Will implement this using a different set of primitives
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llvm-svn: 11091
2004-02-02 23:08:58 +00:00
6e34205653
Fix debugging output.
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llvm-svn: 11088
2004-02-02 22:00:32 +00:00
6471e66fbb
Correctly update def/use information for modified machine operands.
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llvm-svn: 11087
2004-02-02 21:56:40 +00:00
86ff30deab
Should be more careful. The previously applied change made all counts
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outside of loops = 0.
llvm-svn: 11085
2004-02-02 20:29:57 +00:00
2cecace9b2
Create an object for tracking physical register usage. This will look
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much better when I get rid of the reserved registers.
llvm-svn: 11066
2004-02-02 07:30:36 +00:00
9b9c0485fd
Change weight array into a vector and make it as big as the number of
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registers (not as the max number of registers).
Change toSpill from a std::set into a std::vector<bool>.
Use the reverse iterator adapter to do a reverse scan of allocatable
registers.
llvm-svn: 11061
2004-02-01 20:13:26 +00:00
5e05a59bf8
Use std::map::count() instead of std::map::find() != std::map::end()
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where appropriate.
llvm-svn: 11060
2004-02-01 18:39:53 +00:00
a3a56fa041
Change string for joined intervals.
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llvm-svn: 11057
2004-02-01 16:13:05 +00:00
84a84c38b7
Change xor to ^.
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llvm-svn: 11054
2004-02-01 08:19:25 +00:00
cae054f59f
Fix a bug in a recent checkin
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llvm-svn: 11050
2004-02-01 05:25:07 +00:00
8d4f06ed84
Missed one silly assert :-)
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llvm-svn: 11048
2004-02-01 02:21:31 +00:00
69deb4d236
Simplify joinIntervals() code.
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llvm-svn: 11047
2004-02-01 02:18:31 +00:00
91dcc03c39
Use MRegisterInfo::isPhysicalRegister and
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MRegisterInfo::isVirtualRegister.
llvm-svn: 11045
2004-02-01 01:27:01 +00:00
662bb3f495
Apply final part of Chris' patch.
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llvm-svn: 11040
2004-01-31 23:48:47 +00:00
459a67c309
Be a little smarter on the way we handle physical register defs.
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llvm-svn: 11038
2004-01-31 23:13:30 +00:00
c330b98c1c
Finegrainify namespacification, use new MRegisterInfo::isVirtualRegister
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method
llvm-svn: 11037
2004-01-31 21:27:19 +00:00
a2ef296994
Fix, correctly this time, the computation of the return value
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Fix a spello
Tighten up the assertion checking
No functionality changes.
llvm-svn: 11036
2004-01-31 21:21:43 +00:00
626f431165
* Fix incorrect computation of the runOnMachineFunction return value
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* Turn a bunch of instance variables into automatic variables
llvm-svn: 11035
2004-01-31 21:14:04 +00:00
d835aa6711
Remove unneeded #includes
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Move Passes.h (which defines the interface to this file) to the top.
Move statistics to the top of the file.
Add a comment
llvm-svn: 11034
2004-01-31 21:07:15 +00:00
50d97e33b7
Merge safe parts from last night's buggy commit. These do not break
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any test cases :-)
llvm-svn: 11032
2004-01-31 19:59:32 +00:00
Chris Lattner