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741 Commits

Author SHA1 Message Date
Nate Begeman
d7f60a5eb6 Remove operand type 'crbit', since it is no longer used 
llvm-svn: 23106
 2005-08-26 22:04:17 +00:00
Chris Lattner
46daaac4e0 teach getClass what a condition reg is 
llvm-svn: 23105
 2005-08-26 21:51:29 +00:00
Chris Lattner
2c7a9bde76 Minor cleanups: 
* avoid calling getClass() multiple times (it is relatively expensive)
  * Allow -disable-fp-elim to turn of frame pointer elimination.

llvm-svn: 23104
 2005-08-26 21:49:18 +00:00
Chris Lattner
f470259b50 implement SELECT_CC fully for the DAG->DAG isel! 
llvm-svn: 23101
 2005-08-26 21:23:58 +00:00
Chris Lattner
04b88ca768 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
0d2ee60c48 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
2d90a50778 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
Nate Begeman
1c59e5bdd5 Remove some code made dead by the fsel patch 
llvm-svn: 23085
 2005-08-26 17:45:06 +00:00
Chris Lattner
a1c6bad722 now that fsel is formed during legalization, this code is dead 
llvm-svn: 23084
 2005-08-26 17:40:39 +00:00
Chris Lattner
007e1e07e3 implement the other half of the select_cc -> fsel lowering, which handles 
when the RHS of the comparison is 0.0.  Turn this on by default.

llvm-svn: 23083
 2005-08-26 17:36:52 +00:00
Chris Lattner
a31708e6b3 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
97a34c653d Fix some warnings in an optimized build 
llvm-svn: 23080
 2005-08-26 16:38:51 +00:00
Chris Lattner
929c00e9e9 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
2d6f0e333a Fix JIT encoding of conditional branches 
llvm-svn: 23076
 2005-08-26 04:11:42 +00:00
Chris Lattner
dae9a4899f add initial support for converting select_cc -> fsel in the legalizer 
instead of in the backend.  This currently handles fsel cases with registers,
but doesn't have the 0.0 and -0.0 optimization enabled yet.

Once this is finished, special hack for fp immediates can go away.

llvm-svn: 23075
 2005-08-26 00:52:45 +00:00
Nate Begeman
254ecb7886 SUBFIC produces two results, not one. 
llvm-svn: 23073
 2005-08-26 00:34:06 +00:00
Nate Begeman
0619930d74 Implement SHL_PARTS and SRL_PARTS 
llvm-svn: 23072
 2005-08-26 00:28:00 +00:00
Chris Lattner
578b7f212f Emit the lo/hi parts in the right order :) 
llvm-svn: 23068
 2005-08-25 23:36:49 +00:00
Chris Lattner
4433d74ea5 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
e4cf3ab5d4 simplify the add/sub_parts code 
llvm-svn: 23065
 2005-08-25 23:19:58 +00:00
Chris Lattner
e33ad38b02 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
dc8ebb9302 Simplify some code. It's not clear why the UDIV expanded sequence 
doesn't work for large uint constants, but we'll keep the current behavior

llvm-svn: 23061
 2005-08-25 22:03:50 +00:00
Chris Lattner
32600ecfeb Implement setcc correctly for G5 and non-G5 systems 
llvm-svn: 23060
 2005-08-25 21:39:42 +00:00
Chris Lattner
b9c2c40046 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
Nate Begeman
0f60221f2e Remove option to make SetCC illegal on PowerPC after long discussion with 
Chris.  This will be accomplished through correctly modeling CR's and
subregs.

llvm-svn: 23056
 2005-08-25 20:01:10 +00:00
Chris Lattner
a79c58d1e4 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
8ee8270e31 fit in 80 cols 
llvm-svn: 23051
 2005-08-25 17:49:31 +00:00
Chris Lattner
77350a373e 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
2296582d06 Add support for FP constants, fixing UnitTests/2004-02-02-NegativeZero 
llvm-svn: 23038
 2005-08-25 04:47:18 +00:00
Chris Lattner
f36622ea2e 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
c9cc2b0acd implement unconditional branches, fixing UnitTests/2003-05-02-DependentPHI.c 
llvm-svn: 23034
 2005-08-25 00:29:58 +00:00
Chris Lattner
36715208c4 LFS/STFS load and store FP values, not integer ones. This change allows us 
to codegen this: float foo() { return 1.245; }

into this:

_foo:
        lis r2, ha16(.CPI_foo_0)
        lfs f1, lo16(.CPI_foo_0)(r2)
        blr

instead of this:

_foo:
        lis r2, ha16(.CPI_foo_0)
        lfs r2, lo16(.CPI_foo_0)(r2)   <-- ouch
        or f1, r2, r2                  <-- ouch
        blr

with the dag isel.

llvm-svn: 23033
 2005-08-25 00:26:22 +00:00
Chris Lattner
286b85144c Fix a broken assertion 
llvm-svn: 23032
 2005-08-25 00:19:12 +00:00
Chris Lattner
8f595df1a6 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
5efe9406a6 implement support for calls 
llvm-svn: 23026
 2005-08-24 22:45:17 +00:00
Chris Lattner
8824bd228b Remove some dead cases. 
Emit the indcall sequence as:

mtctr inreg
mr R12, inreg
btctr

If inreg and R12 aren't coallesced, this reduces the odds of having the mtctr
and btctr in the same dispatch group.  :)

llvm-svn: 23023
 2005-08-24 22:21:47 +00:00
Chris Lattner
8d151627a8 add an idea 
llvm-svn: 23020
 2005-08-24 18:15:24 +00:00
Nate Begeman
326b3809f4 Whoops, fix a thinko. All cases except SETNE are now handled by the 
target independent code in SelectionDAG.cpp

llvm-svn: 23002
 2005-08-24 05:06:48 +00:00
Nate Begeman
8e1c08e083 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
Nate Begeman
5d3e28b04c Add the "ppc specific" setcc-equivalent select_cc cases 
Prefer 'neg X' to 'subfic 0, X' since it does not set XER[CA]

llvm-svn: 23000
 2005-08-24 04:59:21 +00:00
Chris Lattner
f034da3bd4 Add callseq_begin/end support 
Call stil not supported yet

llvm-svn: 22998
 2005-08-24 00:47:15 +00:00
Chris Lattner
86a4a4745c add a note 
llvm-svn: 22982
 2005-08-23 06:27:59 +00:00
Nate Begeman
a8ec868347 Ack, typo 
llvm-svn: 22981
 2005-08-23 05:45:10 +00:00
Nate Begeman
0ac8bb2fe1 Add an option to make SetCC illegal as a beta option 
llvm-svn: 22979
 2005-08-23 05:42:36 +00:00
Nate Begeman
383c7553a6 Remove some instructions we no longer generate 
llvm-svn: 22976
 2005-08-23 01:16:46 +00:00
Chris Lattner
86ab578e3e Remove some regs that are not used. 
llvm-svn: 22975
 2005-08-22 22:32:13 +00:00
Chris Lattner
362eff4ccd Nate noticed that 30% of the malloc/frees in llc come from calls to LowercaseString 
in the asmprinter.  This changes the .td files to use lower case register names,
avoiding the need to do this call.  This speeds up the asmprinter from 1.52s
to 1.06s on kc++ in a release build.

llvm-svn: 22974
 2005-08-22 22:00:02 +00:00
Chris Lattner
4c9d1715ff Implement stores. 
llvm-svn: 22963
 2005-08-22 01:27:59 +00:00
Chris Lattner
86aceaf749 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
81cde8c7b6 Make sure expressions only have one use before emitting them into a place that is conditionally executed 
llvm-svn: 22960
 2005-08-22 00:47:28 +00:00