Evan Cheng
2ce6ccab6d
Teach DAGISelEmitter about zero_reg.
...
llvm-svn: 37900
2007-07-05 07:19:45 +00:00
Chris Lattner
efa46b445c
silence warning when assertions are disabled.
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llvm-svn: 37654
2007-06-19 06:40:46 +00:00
Chris Lattner
39d713e4a5
Fix CodeGen/PowerPC/2007-05-14-InlineAsmSelectCrash.ll, the other recent
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patches are also needed.
llvm-svn: 37070
2007-05-15 01:36:44 +00:00
Evan Cheng
0afaeec496
PredicateOperand related bug fix.
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llvm-svn: 37060
2007-05-15 01:19:51 +00:00
Evan Cheng
41d7d13158
If a PredicateOperand has an empty ExecuteAlways field, treat it as if a normal operand for isel.
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llvm-svn: 36946
2007-05-08 21:04:07 +00:00
Lauro Ramos Venancio
40822aaf24
bugfix: remember that ResNode was declared.
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llvm-svn: 36477
2007-04-26 17:03:22 +00:00
Lauro Ramos Venancio
bc32d90b46
Implement "general dynamic", "initial exec" and "local exec" TLS models for
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X86 32 bits.
llvm-svn: 36283
2007-04-20 21:38:10 +00:00
Jim Laskey
9d10e4e1fe
Make the constant honest.
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llvm-svn: 33557
2007-01-26 23:00:54 +00:00
Jim Laskey
1bab68f592
Files missing from LABEL check in.
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llvm-svn: 33539
2007-01-26 17:29:20 +00:00
Chris Lattner
135e17b756
Make tblgen error more useful. Patch by B. Scott Michel
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llvm-svn: 33295
2007-01-17 07:45:12 +00:00
Bill Wendling
f13d78d3b8
What should be the last unnecessary <iostream>s in the library.
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llvm-svn: 32333
2006-12-07 22:21:48 +00:00
Chris Lattner
670eb9da78
Fix PR1001, patch by Nikhil Patil!
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llvm-svn: 31880
2006-11-20 18:54:33 +00:00
Chris Lattner
1c86ab0ffe
restore some 'magic' code that I removed: it is needed. Add comments explaining
...
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
...
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
...
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
Evan Cheng
6921c1c0a7
Divide select methods into groups by SelectionDAG node opcodes (ISD::ADD,
...
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
8dac4564af
Parse PredicateOperand's. When an instruction takes one, have the generated
...
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
...
and pat pattern definitions. Codegen is not right for them yet.
llvm-svn: 31444
2006-11-04 01:35:50 +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
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
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
...
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
...
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
822d1b259e
Special case tblgen generated code for patterns like (and X, 255) or (or X, 42).
...
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
...
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
...
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
86f1992481
don't allow 'imm' or specific imms, like '1' on the LHS of a binop.
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This shrinks X86GenDAGISel by ~330 lines.
llvm-svn: 30574
2006-09-21 20:46:13 +00:00
Chris Lattner
28d7124afb
Fit to 80 columns.
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llvm-svn: 30572
2006-09-21 18:28:27 +00:00
Evan Cheng
c5be7540d2
Allow PatFrag to be a leaf node.
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llvm-svn: 30498
2006-09-19 19:08:04 +00:00
Evan Cheng
f020ff9440
Add result of a Xform to isel queue.
...
llvm-svn: 30497
2006-09-19 18:40:15 +00:00
Chris Lattner
87d05ea43b
If multiple predicates are listed, they must all pass
...
llvm-svn: 30476
2006-09-19 00:41:36 +00:00
Chris Lattner
7498e29ca4
There!
...
llvm-svn: 30473
2006-09-18 22:41:07 +00:00
Chris Lattner
b54881691d
Fix Regression/TableGen/2006-09-18-LargeInt.td
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llvm-svn: 30472
2006-09-18 22:28:27 +00:00
Chris Lattner
8b65094e0f
Relax this check.
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llvm-svn: 30381
2006-09-14 23:54:24 +00:00
Evan Cheng
f82eb13e3b
1) With X86 lowering change, the following can no longer happen since
...
the branch's chain is also produced by cmp.
[ch, r : ld]
^ ^
| |
[XX]--/ \- [flag : cmp]
^ ^
| |
\---[br flag]-
Remove an isel check which prevents loads from being folded into cmp / test
instructions.
2) Whenever possible, delete a selected node to allow more load folding
opportunities. Note not all nodes can be deleted after it has been
selected. Some may have simply morphed; some have not changed at all (e.g.
EntryToken).
llvm-svn: 30242
2006-09-11 02:24:43 +00:00
Evan Cheng
9d17d65cc4
Generated isel should favors explicit constant operand (+2) over an operand with a predicate (+1).
...
llvm-svn: 30180
2006-09-08 07:26:39 +00:00
Chris Lattner
7890c00e2c
Use compiler.h instead of hand rolling our own macro
...
llvm-svn: 29913
2006-08-27 13:16:24 +00:00
Evan Cheng
10a7268b85
Do not emit getTargetNode() and SelectNodeTo() which takes more than 3
...
SDOperand arguments. Use the variants which take an array and number instead.
llvm-svn: 29906
2006-08-27 08:11:28 +00:00
Evan Cheng
1c3d571e4b
SelectNodeTo now returns a SDNode*.
...
llvm-svn: 29901
2006-08-26 08:00:10 +00:00
Evan Cheng
36c38110c4
Minor getCopyToReg() call change.
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llvm-svn: 29900
2006-08-26 07:39:28 +00:00