a9d68f140e
The variable SAR's only take one operand too
...
llvm-svn: 22888
2005-08-19 00:31:37 +00:00
145695927a
Stop adding bogus operands to variable shifts on X86. These instructions
...
only take one operand. The other comes implicitly in through CL.
llvm-svn: 22887
2005-08-19 00:16:17 +00:00
be1f314a47
Remove the X86 and PowerPC Simple instruction selectors; their time has
...
passed.
llvm-svn: 22886
2005-08-18 23:53:15 +00:00
17727bad02
Figure out how many operands each instruction has, keep track of whether
...
or not it's variable.
llvm-svn: 22885
2005-08-18 23:38:41 +00:00
33acb2c135
Add shifts.
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llvm-svn: 22884
2005-08-18 23:38:00 +00:00
4bd805e785
Fix operand numbers by marking variable arity nodes as such and by fixing
...
the operand lists of a few other nodes.
llvm-svn: 22883
2005-08-18 23:25:33 +00:00
51e851d0e6
MFLR doesn't take an operand, the LR register is implicit
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llvm-svn: 22882
2005-08-18 23:24:50 +00:00
5cfa377947
Add a new flag
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llvm-svn: 22881
2005-08-18 23:17:07 +00:00
b015303c5e
revert this change, which causes breakage, temporarily
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llvm-svn: 22880
2005-08-18 22:12:31 +00:00
99df668f48
When emitting implicit use/def lists, only emit each unique list once. Though
...
LLVM is able to merge identical static const globals, GCC isn't, and this caused
some bloat in the generated data. This has a marginal effect on PPC, shrinking
the implicit sets from 10->4, but shrinks X86 from 179 to 23, a much bigger
reduction.
This should speed up the register allocator as well by reducing the dcache
footprint for this static data.
llvm-svn: 22879
2005-08-18 21:36:47 +00:00
0c8c2c102d
add a new -view-sched-dags option to view dags as they are sent to the scheduler.
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llvm-svn: 22878
2005-08-18 20:11:49 +00:00
4e00ff6e70
Move this to the emitter
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llvm-svn: 22877
2005-08-18 20:08:53 +00:00
d342de9aaa
Implement the first chunk of a code emitter. This is sophisticated enough to
...
codegen:
_empty:
.LBB_empty_0: ;
blr
but can't do anything more (yet). :)
llvm-svn: 22876
2005-08-18 20:07:59 +00:00
e7b3cf73e5
Unmangled names.
...
llvm-svn: 22875
2005-08-18 20:06:09 +00:00
762c5e799c
Add ScheduleDAG.cpp to the project
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llvm-svn: 22874
2005-08-18 19:52:06 +00:00
6f52a04fc7
Fill in the numOperands field of the TargetInstrDescriptor struct from the
...
.td file.
llvm-svn: 22873
2005-08-18 19:45:37 +00:00
35ca73d335
1. Fix comment.
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2. Get an exact count of 'li ' instructions.
llvm-svn: 22872
2005-08-18 19:38:57 +00:00
6645e001c3
Add regression test to make sure that constants are generated optimally.
...
llvm-svn: 22871
2005-08-18 19:32:46 +00:00
18b9b8df86
More optimal solution for loading constants.
...
llvm-svn: 22870
2005-08-18 18:58:23 +00:00
015d73996d
After selecting the instructions for a basic block, emit the instructions
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llvm-svn: 22869
2005-08-18 18:46:06 +00:00
1b4727de7d
new file, obviously just a stub
...
llvm-svn: 22868
2005-08-18 18:45:24 +00:00
a88fa6085f
add a method
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llvm-svn: 22867
2005-08-18 18:44:33 +00:00
15b5c7ca84
remove some unused stuff
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llvm-svn: 22866
2005-08-18 18:34:00 +00:00
d16a26a8d4
Fix int foo() { return 65535; } by using the top 16 bits of the constant
...
as the argument to LIS rather than the result of HA16(constant).
The DAG->DAG ISel was already doing the right thing.
llvm-svn: 22865
2005-08-18 18:14:49 +00:00
d32638706a
Improve ISD::Constant codegen.
...
Now for int foo() { return -1; } we generate:
_foo:
li r3, -1
blr
instead of
_foo:
lis r2, -1
ori r3, r2, 65535
blr
llvm-svn: 22864
2005-08-18 18:01:39 +00:00
1a908c8920
Enable critical edge splitting by default
...
llvm-svn: 22863
2005-08-18 17:35:14 +00:00
37faf35b35
replace switch stmt with an assert, generate li 0 instead of lis 0 for 0,
...
to make the code follow people's expectations better.
llvm-svn: 22861
2005-08-18 17:16:52 +00:00
32d4c85278
Handle loading of 0x????0000 constants with a single instruction.
...
llvm-svn: 22858
2005-08-18 15:52:30 +00:00
b3821a3943
Add support for ISD::AND, and its various optimized forms.
...
llvm-svn: 22857
2005-08-18 07:30:46 +00:00
19a271a67b
Add support for target DAG nodes that take 4 operands, such as PowerPC's
...
rlwinm.
llvm-svn: 22856
2005-08-18 07:30:15 +00:00
cfb9a74c2e
Maintain consistency in negating things
...
llvm-svn: 22855
2005-08-18 05:44:50 +00:00
72d6f8800d
Implement XOR, remove a broken sign_extend_inreg case
...
llvm-svn: 22854
2005-08-18 05:00:13 +00:00
802080d812
Fix printing of VTSDNodes
...
llvm-svn: 22853
2005-08-18 03:31:02 +00:00
70d9c5c340
Add a testcase for load short -> uint, which is currently emitted as a
...
zextload + sign_extend_inreg rather than a sextload.
llvm-svn: 22852
2005-08-18 03:11:44 +00:00
4bfb4a215d
Add a bunch more simple nodes.
...
llvm-svn: 22851
2005-08-18 03:04:18 +00:00
457367f14c
Add a couple more nodes that are easy to handle
...
llvm-svn: 22850
2005-08-18 00:53:47 +00:00
74d5529b88
Be fruitful and multiply!
...
llvm-svn: 22849
2005-08-18 00:21:41 +00:00
04160c6d8d
Better version of isIntImmediate.
...
llvm-svn: 22848
2005-08-18 00:15:15 +00:00
2a1f2df82a
messed up
...
llvm-svn: 22847
2005-08-17 23:57:24 +00:00
5e56202916
include/llvm/Support/MathExtras.h
...
llvm-svn: 22846
2005-08-17 23:54:12 +00:00
3fcf47d8f0
Teach the DAG->DAG ISel about FNEG, and how it can be used to invert
...
several of the PowerPC opcodes that come in both negated and non-negated
forms.
llvm-svn: 22845
2005-08-17 23:46:35 +00:00
cc0132b2dc
Add two new methods isTargetOpcode() which returns true if the node type
...
is greater than the range of building selection dag node types, and
getTargetOpcode(), which returns the node opcode less the value of
isd::builtin_op_end, which specifies the end of the builtin types.
llvm-svn: 22844
2005-08-17 23:44:54 +00:00
ea7dfd53d6
Fix Transforms/LoopStrengthReduce/2005-08-17-OutOfLoopVariant.ll, a crash
...
on 177.mesa
llvm-svn: 22843
2005-08-17 21:22:41 +00:00
9b2efaf9c8
new testcase distilled from mesa
...
llvm-svn: 22842
2005-08-17 21:21:47 +00:00
d66e616545
Move the code dependency for MathExtras.h from SelectionDAGNodes.h.
...
Added some class dividers in SelectionDAG.cpp.
llvm-svn: 22841
2005-08-17 20:08:02 +00:00
8ad8f71447
Move code dependency for MathExtras.h out of Constants.h.
...
llvm-svn: 22840
2005-08-17 20:06:22 +00:00
17e7599ecb
Promote dependency for MathExtras.h out of Constants.h.
...
llvm-svn: 22839
2005-08-17 20:04:34 +00:00
b74c666186
Culling out use of unions for converting FP to bits and vice versa.
...
llvm-svn: 22838
2005-08-17 19:34:49 +00:00
c6aa80668e
add a beta option for turning on dag->dag isel
...
llvm-svn: 22837
2005-08-17 19:33:30 +00:00
43ff01e2e6
initial hack at a dag->dag instruction selector. This is obviously woefully
...
incomplete, but it is a start. It handles basic argument/retval stuff, immediates,
add and sub.
llvm-svn: 22836
2005-08-17 19:33:03 +00:00
Chris Lattner