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394 Commits

Author SHA1 Message Date
Chris Lattner b2854fadda Make fsel emission work with both the pattern and dag-dag selectors, by 
giving it a non-instruction opcode.  The dag->dag selector used to not
select the operands of the fsel, because it thought that whole tree was
already selected.

llvm-svn: 23091
 2005-08-26 20:25:03 +00:00
Chris Lattner bec817ce6f implement the fold for: 
bool %test(int %X, int %Y) {
        %C = setne int %X, 0
        ret bool %C
}

to:

_test:
        addic r2, r3, -1
        subfe r3, r2, r3
        blr

llvm-svn: 23089
 2005-08-26 18:46:49 +00:00
Chris Lattner a9e6a82d66 Changes to adjust to new ReplaceAllUsesWith syntax. Change FP_EXTEND to 
just return its input, instead of emitting an explicit copy.

llvm-svn: 23088
 2005-08-26 18:37:23 +00:00
Chris Lattner c75e047245 now that fsel is formed during legalization, this code is dead 
llvm-svn: 23084
 2005-08-26 17:40:39 +00:00
Chris Lattner c30405e0ee Change ConstantPoolSDNode to actually hold the Constant itself instead of 
putting it into the constant pool.  This allows the isel machinery to
create constants that it will end up deciding are not needed, without them
ending up in the resultant function constant pool.

llvm-svn: 23081
 2005-08-26 17:15:30 +00:00
Chris Lattner 7bbdae53d6 Fix some warnings in an optimized build 
llvm-svn: 23080
 2005-08-26 16:38:51 +00:00
Chris Lattner 2091a36631 Fix a huge annoyance: SelectNodeTo took types before the opcode unlike 
every other SD API.  Fix it to take the opcode before the types.

llvm-svn: 23079
 2005-08-26 16:36:26 +00:00
Nate Begeman 89093ca62a SUBFIC produces two results, not one. 
llvm-svn: 23073
 2005-08-26 00:34:06 +00:00
Nate Begeman bed4f2b982 Implement SHL_PARTS and SRL_PARTS 
llvm-svn: 23072
 2005-08-26 00:28:00 +00:00
Chris Lattner b81431b012 Emit the lo/hi parts in the right order :) 
llvm-svn: 23068
 2005-08-25 23:36:49 +00:00
Chris Lattner 02884fe41c implement support for 64-bit add/sub, fix a broken assertion for 64-bit 
return.  Allow the udiv breaker-upper to work with any non-zero constant
operand.

llvm-svn: 23066
 2005-08-25 23:21:06 +00:00
Chris Lattner 6e184f2b3d Finish implementing SDIV/UDIV by copying over the majik constant code from 
ISelPattern

llvm-svn: 23062
 2005-08-25 22:04:30 +00:00
Chris Lattner b746dd1cf6 Implement setcc correctly for G5 and non-G5 systems 
llvm-svn: 23060
 2005-08-25 21:39:42 +00:00
Chris Lattner 3dcd75bc54 implement setcc on the G5. We're still missing the non-g5 specific bits, but 
they will come later.

llvm-svn: 23059
 2005-08-25 20:08:18 +00:00
Chris Lattner dc66457022 Add support for sdiv by 2^k and -2^k. Producing code like: 
_test:
        srawi r2, r3, 2
        addze r3, r2
        blr

llvm-svn: 23052
 2005-08-25 17:50:06 +00:00
Chris Lattner 25db699671 Implement support for taking the address of constant pool indices, which 
is used by the int -> FP code among other things.  This gets
2005-05-12-Int64ToFP past that failure, to dying on lack of support for add_parts

llvm-svn: 23042
 2005-08-25 05:04:11 +00:00
Chris Lattner 666512c832 Add support for FP constants, fixing UnitTests/2004-02-02-NegativeZero 
llvm-svn: 23038
 2005-08-25 04:47:18 +00:00
Chris Lattner e4c338d0d8 Fully implement frame index, so that we can pass the address of alloca's 
around to functions and stuff

llvm-svn: 23036
 2005-08-25 00:45:43 +00:00
Chris Lattner 66a6a13225 implement unconditional branches, fixing UnitTests/2003-05-02-DependentPHI.c 
llvm-svn: 23034
 2005-08-25 00:29:58 +00:00
Chris Lattner 794eb6684d Fix a broken assertion 
llvm-svn: 23032
 2005-08-25 00:19:12 +00:00
Chris Lattner a3fbdae515 Split IMPLICIT_DEF into IMPLICIT_DEF_GPR and IMPLICIT_DEF_FP, so that the 
instructions take a consistent reg class.  Implement ISD::UNDEF in the dag->dag
selector to generate this, fixing UnitTests/2003-07-06-IntOverflow.

llvm-svn: 23028
 2005-08-24 23:08:16 +00:00
Chris Lattner d83cd354bd implement support for calls 
llvm-svn: 23026
 2005-08-24 22:45:17 +00:00
Nate Begeman a1e0a2f72b Remove unused statistic 
Prefer 'neg X' to 'subfic 0, X' since neg does not set XER[CA]

llvm-svn: 23001
 2005-08-24 05:03:20 +00:00
Chris Lattner b6d034a841 Add callseq_begin/end support 
Call stil not supported yet

llvm-svn: 22998
 2005-08-24 00:47:15 +00:00
Chris Lattner ca0c0d7550 Implement stores. 
llvm-svn: 22963
 2005-08-22 01:27:59 +00:00
Chris Lattner 1d634b2f44 Fix compilation of: 
float %test2(float* %P) {
        %Q = load float* %P
        %R = add float %Q, %Q
        ret float %R
}

By returning the right result.

llvm-svn: 22961
 2005-08-22 00:59:14 +00:00
Chris Lattner c5292ec9de Implement most of load support. There is still a bug though. 
llvm-svn: 22959
 2005-08-21 22:31:09 +00:00
Chris Lattner 2a1823d178 Implement selection for branches. 
llvm-svn: 22951
 2005-08-21 18:50:37 +00:00
Chris Lattner 4564039498 add support for global address, including PIC support. 
This REALLY should be lowered by the legalizer!

llvm-svn: 22941
 2005-08-19 22:38:53 +00:00
Chris Lattner 65d66797a5 Fix a typeo, no wonder all tokenfactor edges were the same! 
llvm-svn: 22935
 2005-08-19 21:33:02 +00:00
Nate Begeman 93c4bc6dca ISD::OR, and it's accompanying SelectBitfieldInsert 
llvm-svn: 22889
 2005-08-19 00:38:14 +00:00
Nate Begeman 33acb2c135 Add shifts. 
llvm-svn: 22884
 2005-08-18 23:38:00 +00:00
Chris Lattner 4e00ff6e70 Move this to the emitter 
llvm-svn: 22877
 2005-08-18 20:08:53 +00:00
Chris Lattner 015d73996d After selecting the instructions for a basic block, emit the instructions 
llvm-svn: 22869
 2005-08-18 18:46:06 +00:00
Chris Lattner 15b5c7ca84 remove some unused stuff 
llvm-svn: 22866
 2005-08-18 18:34:00 +00:00
Nate Begeman 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
Nate Begeman b3821a3943 Add support for ISD::AND, and its various optimized forms. 
llvm-svn: 22857
 2005-08-18 07:30:46 +00:00
Nate Begeman cfb9a74c2e Maintain consistency in negating things 
llvm-svn: 22855
 2005-08-18 05:44:50 +00:00
Nate Begeman 72d6f8800d Implement XOR, remove a broken sign_extend_inreg case 
llvm-svn: 22854
 2005-08-18 05:00:13 +00:00
Nate Begeman 4bfb4a215d Add a bunch more simple nodes. 
llvm-svn: 22851
 2005-08-18 03:04:18 +00:00
Nate Begeman 457367f14c Add a couple more nodes that are easy to handle 
llvm-svn: 22850
 2005-08-18 00:53:47 +00:00
Nate Begeman 74d5529b88 Be fruitful and multiply! 
llvm-svn: 22849
 2005-08-18 00:21:41 +00:00
Nate Begeman 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
Chris Lattner 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