Chris Lattner
efcd65f335
ADd support for adding constraints to suboperands
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llvm-svn: 31748
2006-11-15 02:38:17 +00:00
Chris Lattner
1c86ab0ffe
restore some 'magic' code that I removed: it is needed. Add comments explaining
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why.
llvm-svn: 31743
2006-11-14 22:17:10 +00:00
Chris Lattner
927a143285
minimal hack to get patterns whose result type is iPTR to be selected.
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llvm-svn: 31742
2006-11-14 21:50:27 +00:00
Chris Lattner
1cbfe99b60
remove some dead code
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llvm-svn: 31740
2006-11-14 21:41:35 +00:00
Chris Lattner
7e5cbf9ee0
Add support for nodes that return iPTR.
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llvm-svn: 31739
2006-11-14 21:32:01 +00:00
Chris Lattner
03cc8c84ef
changes to get ptr_rc to be accepted in patterns. This is needed for ppc preinc
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stores.
llvm-svn: 31738
2006-11-14 21:18:40 +00:00
Chris Lattner
796d72272b
Fix a bug handling nodes with variable arguments. The code was fixed to assume
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that there were two input operands before the variable operand portion. This
*happened* to be true for all call instructions, which took a chain and a
destination, but was not true for the PPC BCTRL instruction, whose destination
is implicit.
Making this code more general allows elimination of the custom selection logic
for BCTRL.
llvm-svn: 31732
2006-11-14 18:41:38 +00:00
Reid Spencer
c7d7e1ed9c
Add some output so the user is informed while they wait.
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llvm-svn: 31700
2006-11-13 16:08:51 +00:00
Reid Spencer
6c8c157f98
Add -lstdc++ to the link line for C++ programs.
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llvm-svn: 31678
2006-11-11 10:22:48 +00:00
Chris Lattner
6836cbaf9d
allow ptr_rc to explicitly appear in an instructions operand list, it doesn't
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have to be a subpart of a complex operand.
llvm-svn: 31618
2006-11-10 02:01:40 +00:00
Evan Cheng
8743c67826
Remove M_2_ADDR_FLAG.
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llvm-svn: 31583
2006-11-09 02:22:54 +00:00
Reid Spencer
872f4226e4
Don't run bugpoint if we can't find a misoptimization.
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llvm-svn: 31582
2006-11-09 01:47:04 +00:00
Reid Spencer
1d8fddc5b0
Print a usage message if too few arguments to program.
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llvm-svn: 31581
2006-11-09 00:50:32 +00:00
Reid Spencer
dbb1ac36fa
Add a utility script to find a mis-optimization problem. This sometimes
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helps when bugpoint can't find the problem directly because it needs the
set of optimizations that cause the program to fail.
llvm-svn: 31580
2006-11-09 00:26:17 +00:00
Evan Cheng
6921c1c0a7
Divide select methods into groups by SelectionDAG node opcodes (ISD::ADD,
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X86ISD::CMP, etc.) instead of SDNode names (add, x86cmp, etc). We now allow
multiple SDNodes to map to the same SelectionDAG node (e.g. store, indexed
store).
llvm-svn: 31575
2006-11-08 23:01:03 +00:00
Evan Cheng
42fb21c3c5
Always pass the root node to ComplexPattern isel matching function.
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llvm-svn: 31570
2006-11-08 20:31:10 +00:00
Chris Lattner
c1d27af4b8
emit TIED_TO correctly
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llvm-svn: 31484
2006-11-07 01:27:55 +00:00
Chris Lattner
908ea22022
Mark predicate operands as such in operand info.
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llvm-svn: 31483
2006-11-06 23:53:31 +00:00
Chris Lattner
e1960fc065
simplify the way operand flags and constraints are handled, making it easier
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to extend.
llvm-svn: 31481
2006-11-06 23:49:51 +00:00
Chris Lattner
04b6336b73
recognize ppc's blr instruction as predicated
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llvm-svn: 31480
2006-11-06 21:44:54 +00:00
Chris Lattner
97e9292cf3
regenerate
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llvm-svn: 31472
2006-11-05 23:28:58 +00:00
Jeff Cohen
e1003da1a2
Unbreak VC++ build.
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llvm-svn: 31464
2006-11-05 19:31:28 +00:00
Evan Cheng
8e65006b5e
Clean up some code.
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llvm-svn: 31451
2006-11-04 09:40:23 +00:00
Chris Lattner
8dac4564af
Parse PredicateOperand's. When an instruction takes one, have the generated
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isel fill in the instruction operands with the 'execute always' value
automatically.
llvm-svn: 31448
2006-11-04 05:12:02 +00:00
Chris Lattner
f7ad33f01b
First steps to getting PredicateOperand's to work. This handles instruction
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and pat pattern definitions. Codegen is not right for them yet.
llvm-svn: 31444
2006-11-04 01:35:50 +00:00
Chris Lattner
5eca521156
eliminate need for the NumMIOperands field in Operand.
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llvm-svn: 31432
2006-11-03 23:45:17 +00:00
Reid Spencer
da581ac715
Remove an unused variable.
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llvm-svn: 31403
2006-11-03 01:48:30 +00:00
Chris Lattner
f6b840a1ae
silence warning
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llvm-svn: 31402
2006-11-03 01:45:13 +00:00
Reid Spencer
d41f385ed9
Don't write out variables that are never used.
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llvm-svn: 31396
2006-11-03 01:28:12 +00:00
Chris Lattner
71ce2c5de5
silence warnings
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llvm-svn: 31392
2006-11-03 01:11:05 +00:00
Reid Spencer
01f5071a4d
Revert last patch which causes tblgen to segfault (why, I'm not sure).
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llvm-svn: 31383
2006-11-02 21:07:40 +00:00
Reid Spencer
0d18610609
For PR786:
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Remove unused variables.
llvm-svn: 31381
2006-11-02 20:46:16 +00:00
Reid Spencer
4bafa71dc1
For PR786:
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Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.
llvm-svn: 31380
2006-11-02 20:25:50 +00:00
Evan Cheng
05d73e7209
Tied-to constraint must be op_with_larger_idx = op_with_smaller_idx or else throw an exception.
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llvm-svn: 31361
2006-11-01 23:03:11 +00:00
Evan Cheng
a585562f95
Not meant to be checked in.
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llvm-svn: 31334
2006-11-01 00:27:59 +00:00
Evan Cheng
c566892bd5
Add operand constraints to TargetInstrInfo.
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llvm-svn: 31333
2006-11-01 00:27:05 +00:00
Reid Spencer
bddf9a66ec
80 cols fix.
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llvm-svn: 31050
2006-10-19 15:24:04 +00:00
Evan Cheng
f872538d4b
Passing isel root and use operands to ComplexPattern functions, these should do the usual load folding checks as well.
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llvm-svn: 30972
2006-10-16 06:33:44 +00:00
Evan Cheng
513dc7ed5f
When checking if a load can be folded, we check if there is any non-direct
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way to reach the load via any nodes that would be folded. Start from the
root of the matched sub-tree.
llvm-svn: 30956
2006-10-14 08:30:15 +00:00
Evan Cheng
c7283044d1
Really remove dead nodes from isel queue.
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llvm-svn: 30923
2006-10-12 23:18:52 +00:00
Evan Cheng
5ff49d9410
Use RemoveDeadNode to kill dead node.
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llvm-svn: 30917
2006-10-12 20:35:19 +00:00
Evan Cheng
65264c811f
Prior load folding check on chain operand was too strict. It requires the
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chain operand to point to the load being folded. Now we relax this, traversing
up the chain, if it doesn't reach the load, then it's ok. We will create a
TokenFactor (of all the chain operands and the load's chain) to capture all
the control flow dependencies.
llvm-svn: 30897
2006-10-12 02:08:53 +00:00
Evan Cheng
7a185e0164
Added properties such as SDNPHasChain to ComplexPattern.
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llvm-svn: 30890
2006-10-11 21:02:01 +00:00
Chris Lattner
461eba5c63
regenerate
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llvm-svn: 30888
2006-10-11 18:13:09 +00:00
Chris Lattner
0c0f2eacfc
Add support for let expressions around an mdef. This implements a new part
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of Regression/TableGen/MultiClass.td.
llvm-svn: 30887
2006-10-11 18:12:44 +00:00
Chris Lattner
822d1b259e
Special case tblgen generated code for patterns like (and X, 255) or (or X, 42).
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The dag/inst combiners often 'simplify' the masked value based on whether
or not the bits are live or known zero/one. This is good and dandy, but
often causes special case patterns to fail, such as alpha's CMPBGE pattern,
which looks like "(set GPRC:$RC, (setuge (and GPRC:$RA, 255), (and GPRC:$RB, 255)))".
Here the pattern for (and X, 255) should match actual dags like (and X, 254) if
the dag combiner proved that the missing bits are already zero (one for 'or').
For CodeGen/Alpha/cmpbge.ll:test2 for example, this results in:
sll $16,1,$0
cmpbge $0,$17,$0
ret $31,($26),1
instead of:
sll $16,1,$0
and $0,254,$0
and $17,255,$1
cmpule $1,$0,$0
ret $31,($26),1
... and requires no target-specific code.
llvm-svn: 30871
2006-10-11 04:05:55 +00:00
Chris Lattner
ad597308ad
Split some code out into a new method. The generated code is exactly
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identical, this is just a refactoring.
llvm-svn: 30868
2006-10-11 03:35:34 +00:00
Evan Cheng
084d415941
Predicate function on the node should be matched before its childrean' matching
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code. This is especially important now matching ISD::LOAD also requires a
Predicate_Load call.
llvm-svn: 30845
2006-10-09 21:02:17 +00:00
Chris Lattner
b007ac9ecf
regenerate
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llvm-svn: 30799
2006-10-07 07:15:19 +00:00
Chris Lattner
b5b2e0340e
Bugfix: this allows multiclasses to have default arguments.
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llvm-svn: 30798
2006-10-07 07:14:48 +00:00