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Author SHA1 Message Date
Chris Lattner
405266a17c Add a flag 
llvm-svn: 23092
 2005-08-26 20:29:01 +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
17f0f9beae add a marker at the end of the instruction enum list 
llvm-svn: 23090
 2005-08-26 20:17:00 +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
Chris Lattner
3e0bfc0cc1 Revampt ReplaceAllUsesWith to be more efficient and easier to use. 
llvm-svn: 23087
 2005-08-26 18:36:28 +00:00
Chris Lattner
25b6e62a46 Add a new version of ReplaceAllUsesWith, make the comments more useful. 
llvm-svn: 23086
 2005-08-26 18:35:58 +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
439ef36320 Fix a bug in my previous checkin 
llvm-svn: 23082
 2005-08-26 17:18:44 +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
Jim Laskey
bf0a2d01be Changed unsigned long to unsigned. 
llvm-svn: 23078
 2005-08-26 09:25:54 +00:00
Jim Laskey
a841c4183a Change unsigned lng to unsigned. 
llvm-svn: 23077
 2005-08-26 09:24:46 +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
Chris Lattner
6d22117d76 the 5th operand is the 4th number 
llvm-svn: 23074
 2005-08-26 00:43:46 +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
f25ec1b7b9 Add support for targets that want to custom expand select_cc in some cases. 
llvm-svn: 23071
 2005-08-26 00:23:59 +00:00
Chris Lattner
7e68d39877 Allow LowerOperation to return a null SDOperand in case it wants to lower 
some things given to it, but not all.

llvm-svn: 23070
 2005-08-26 00:14:16 +00:00
Chris Lattner
2c3fbbab05 Fix a nasty bug from a previous patch of mine 
llvm-svn: 23069
 2005-08-26 00:13:12 +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
Jim Laskey
236ef88c39 Added cl::bits option type (bit vectors). See "Collecting options as a set 
of flags" in the Command Line doc.

llvm-svn: 23067
 2005-08-25 23:31:45 +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
Jim Laskey
05ed995816 Tweak of multiple occurance paragraph. 
llvm-svn: 23064
 2005-08-25 23:01:25 +00:00
Jim Laskey
524753c9f8 Documentation updated to include upcoming support for bit vector support 
(flags.)

llvm-svn: 23063
 2005-08-25 22:52:43 +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
54f44ad750 New fold for SELECT_CC 
llvm-svn: 23058
 2005-08-25 20:04:38 +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
18572f3c67 Don't auto-cse nodes that return flags 
llvm-svn: 23055
 2005-08-25 19:12:10 +00:00
Chris Lattner
cb3910fa74 add printer support for flag operands 
llvm-svn: 23054
 2005-08-25 17:59:23 +00:00
Chris Lattner
7c7a447220 simplify the code a bit using isOperationLegal 
llvm-svn: 23053
 2005-08-25 17:54:58 +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
7598a14e0c Add support for flag operands 
llvm-svn: 23050
 2005-08-25 17:48:54 +00:00
Chris Lattner
70cc927742 add a method 
llvm-svn: 23049
 2005-08-25 17:24:09 +00:00
Chris Lattner
713643bc71 add an enum value 
llvm-svn: 23048
 2005-08-25 17:07:09 +00:00
Jim Laskey
1d099e4e27 Remove Support/Search.h entry 
llvm-svn: 23047
 2005-08-25 16:44:13 +00:00
Jim Laskey
4878a218a4 Recommended to use std::algorithms instead. 
llvm-svn: 23046
 2005-08-25 16:21:56 +00:00
Jim Laskey
ee04e3e897 Added Support/Search.h to project. 
llvm-svn: 23045
 2005-08-25 13:42:04 +00:00
Jim Laskey
86cc9d4550 Added support for generic linear/binary search. 
llvm-svn: 23044
 2005-08-25 13:32:25 +00:00
Chris Lattner
165fcbcd64 Fix a problem Duraid noticed, where we weren't removing values from the kills 
list when doing two-address and phi node lowering during register allocation.

llvm-svn: 23043
 2005-08-25 05:45:31 +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