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10658 Commits

Author SHA1 Message Date
Chris Lattner
f0e731ea49 Now that the simple isels are dead, so is this. 
llvm-svn: 22913
 2005-08-19 18:30:39 +00:00
Chris Lattner
db827889e3 Sparcv9 gets no operand info 
llvm-svn: 22909
 2005-08-19 16:56:56 +00:00
Jeff Cohen
12674110d5 Fix VC++ constant truncation warning. 
llvm-svn: 22907
 2005-08-19 16:19:21 +00:00
Duraid Madina
4efc0b6f2b a bugfix (up top) and a quick repair job: disable generation of dep.z 
(which died about a week ago) so we're back to load-(2^n-1)-then-AND
sequences. slow, but things should now be Almost Completely Working,
modulo those pesky alignment/ABI issues.

llvm-svn: 22904
 2005-08-19 13:25:50 +00:00
Jeff Cohen
f99748bc0f Fix VC++ precedence warning. 
llvm-svn: 22902
 2005-08-19 04:39:48 +00:00
Nate Begeman
88bfe8a7c3 Fix a bug where we were passing the wrong number of arguments to an 
instruction.

llvm-svn: 22901
 2005-08-19 03:42:28 +00:00
Chris Lattner
1207209677 Fix computation of # operands, add a temporary hack for CopyToReg 
llvm-svn: 22896
 2005-08-19 01:01:34 +00:00
Chris Lattner
5cfc567fb8 mark variable arity instructions as such. Alpha wins the battle for 
cleanest backend in this metric :)

llvm-svn: 22893
 2005-08-19 00:51:37 +00:00
Chris Lattner
5194ff37c4 Mark some instructions as variable_ops, and PSEUDO_ALLOC as taking a GPR. 
I'm not convinced this is all of them,  but I can't do much testing, because
IA64 LLC crashes on big programs :(

llvm-svn: 22892
 2005-08-19 00:47:42 +00:00
Chris Lattner
d7bd59d77e add a few missing cases 
llvm-svn: 22891
 2005-08-19 00:41:29 +00:00
Chris Lattner
f62a66a21c Give ADJCALLSTACKDOWN/UP the correct operands. 
Give a whole bunch of other stuff variable operands, particularly FP.  The
FP stackifier is playing fast and loose with operands here, so we have to
mark them all as variable.  This will have to be fixed before we can dag->dag
the X86 backend.  The solution is for the pre-stackifier and post-stackifier
instructions to all be disjoint.

llvm-svn: 22890
 2005-08-19 00:38:22 +00:00
Nate Begeman
1182e06dcf ISD::OR, and it's accompanying SelectBitfieldInsert 
llvm-svn: 22889
 2005-08-19 00:38:14 +00:00
Chris Lattner
abad70eaf8 The variable SAR's only take one operand too 
llvm-svn: 22888
 2005-08-19 00:31:37 +00:00
Chris Lattner
8ce7dd449a 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
Nate Begeman
a978ae8b7d Remove the X86 and PowerPC Simple instruction selectors; their time has 
passed.

llvm-svn: 22886
 2005-08-18 23:53:15 +00:00
Nate Begeman
c1aeaed2b9 Add shifts. 
llvm-svn: 22884
 2005-08-18 23:38:00 +00:00
Chris Lattner
1d3d2fb435 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
Chris Lattner
9b342804a8 MFLR doesn't take an operand, the LR register is implicit 
llvm-svn: 22882
 2005-08-18 23:24:50 +00:00
Chris Lattner
32120e461e Add a new flag 
llvm-svn: 22881
 2005-08-18 23:17:07 +00:00
Chris Lattner
7b9f02525e add a new -view-sched-dags option to view dags as they are sent to the scheduler. 
llvm-svn: 22878
 2005-08-18 20:11:49 +00:00
Chris Lattner
2147daa960 Move this to the emitter 
llvm-svn: 22877
 2005-08-18 20:08:53 +00:00
Chris Lattner
62bc771af7 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
Jim Laskey
7399a3d644 More optimal solution for loading constants. 
llvm-svn: 22870
 2005-08-18 18:58:23 +00:00
Chris Lattner
a094a1279a After selecting the instructions for a basic block, emit the instructions 
llvm-svn: 22869
 2005-08-18 18:46:06 +00:00
Chris Lattner
ebb48e5877 new file, obviously just a stub 
llvm-svn: 22868
 2005-08-18 18:45:24 +00:00
Chris Lattner
80a5ffb6c5 remove some unused stuff 
llvm-svn: 22866
 2005-08-18 18:34:00 +00:00
Nate Begeman
7efd8aa1d1 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
Nate Begeman
7726312fac 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
Chris Lattner
5cbeaed711 Enable critical edge splitting by default 
llvm-svn: 22863
 2005-08-18 17:35:14 +00:00
Chris Lattner
79b0fc3b9a 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
Jim Laskey
ed406c683b Handle loading of 0x????0000 constants with a single instruction. 
llvm-svn: 22858
 2005-08-18 15:52:30 +00:00
Nate Begeman
67f3483a97 Add support for ISD::AND, and its various optimized forms. 
llvm-svn: 22857
 2005-08-18 07:30:46 +00:00
Nate Begeman
474ec3c02d 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
Nate Begeman
3681359c93 Maintain consistency in negating things 
llvm-svn: 22855
 2005-08-18 05:44:50 +00:00
Nate Begeman
b6e36decb6 Implement XOR, remove a broken sign_extend_inreg case 
llvm-svn: 22854
 2005-08-18 05:00:13 +00:00
Chris Lattner
d6b9b36616 Fix printing of VTSDNodes 
llvm-svn: 22853
 2005-08-18 03:31:02 +00:00
Nate Begeman
feac5964d7 Add a bunch more simple nodes. 
llvm-svn: 22851
 2005-08-18 03:04:18 +00:00
Nate Begeman
4a875e784e Add a couple more nodes that are easy to handle 
llvm-svn: 22850
 2005-08-18 00:53:47 +00:00
Nate Begeman
276155cb07 Be fruitful and multiply! 
llvm-svn: 22849
 2005-08-18 00:21:41 +00:00
Jim Laskey
aa4903a2a6 Better version of isIntImmediate. 
llvm-svn: 22848
 2005-08-18 00:15:15 +00:00
Nate Begeman
e7c038e591 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
Chris Lattner
a852093954 Fix Transforms/LoopStrengthReduce/2005-08-17-OutOfLoopVariant.ll, a crash 
on 177.mesa

llvm-svn: 22843
 2005-08-17 21:22:41 +00:00
Jim Laskey
d761e8859d 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
Jim Laskey
5f57048c62 Move code dependency for MathExtras.h out of Constants.h. 
llvm-svn: 22840
 2005-08-17 20:06:22 +00:00
Jim Laskey
062df4865a Promote dependency for MathExtras.h out of Constants.h. 
llvm-svn: 22839
 2005-08-17 20:04:34 +00:00
Jim Laskey
61e3d7bca5 Culling out use of unions for converting FP to bits and vice versa. 
llvm-svn: 22838
 2005-08-17 19:34:49 +00:00
Chris Lattner
6e4c443e45 add a beta option for turning on dag->dag isel 
llvm-svn: 22837
 2005-08-17 19:33:30 +00:00
Chris Lattner
6ee7175048 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
3c0e683c5d add prototype, remove dead proto 
llvm-svn: 22835
 2005-08-17 19:32:03 +00:00
Chris Lattner
a11bdf3abe Fix a bug in RemoveDeadNodes where it would crash when its "optional" 
argument is not specified.

Implement ReplaceAllUsesWith.

llvm-svn: 22834
 2005-08-17 19:00:20 +00:00