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9788 Commits

Author SHA1 Message Date
Nate Begeman
b2e5a962ff Full varargs support. All of UnitTests now passes 
llvm-svn: 21070
 2005-04-03 23:11:17 +00:00
Nate Begeman
1a5aaf6009 Pass the correct value for the chain to the store 
llvm-svn: 21066
 2005-04-03 22:22:56 +00:00
Nate Begeman
82d17d0e70 Fix SHL_PARTS 
Start implementation of integer varargs

llvm-svn: 21065
 2005-04-03 22:13:27 +00:00
Andrew Lenharth
320fff1cbe is this simpler? I think it is simpler. 
llvm-svn: 21064
 2005-04-03 20:35:21 +00:00
Andrew Lenharth
4be5502eb4 fix 101 regressions 
llvm-svn: 21063
 2005-04-03 18:24:50 +00:00
Duraid Madina
bfbfb0e4c7 .bss is no problem here. 
llvm-svn: 21061
 2005-04-03 14:52:01 +00:00
Nate Begeman
127bd62534 Keeping up with the Joneses. 
Implement not, nor, nand, and eqv

llvm-svn: 21060
 2005-04-03 11:20:20 +00:00
Andrew Lenharth
c16ede8779 Select optimization 
llvm-svn: 21051
 2005-04-02 22:32:39 +00:00
Andrew Lenharth
bd19c1d25f Try several things. 1) drop /i from FP ops 2) factor out FP to Int moves and provide 21264 support for those 3) match not 4) match ornot andnot xornot 
llvm-svn: 21046
 2005-04-02 21:06:51 +00:00
Chris Lattner
0938200804 fix some VC compilation problems, thanks to Jeff C for pointing this out! 
llvm-svn: 21044
 2005-04-02 20:17:09 +00:00
Chris Lattner
e6d28e8aac EquivClassGraphs is now in DataStructure.h 
llvm-svn: 21042
 2005-04-02 20:08:17 +00:00
Chris Lattner
54ab60f08d use a callee_iterator typedef. 
llvm-svn: 21038
 2005-04-02 20:02:41 +00:00
Chris Lattner
23ef46ddca Change the ActualCallees callgraph from hash_multimap<Instruction,Function> 
to std::set<std::pair<Inst,Func>> to avoid duplicate entries.

This speeds up the CompleteBU pass from 1.99s to .15s on povray and the
eqgraph passes from 1.5s to .16s on the same.

llvm-svn: 21031
 2005-04-02 19:17:18 +00:00
Andrew Lenharth
08e5b4f996 FNEG/FABS/UNDEF 
llvm-svn: 21029
 2005-04-02 19:11:07 +00:00
Andrew Lenharth
04fd317736 FNEG/FABS 
llvm-svn: 21028
 2005-04-02 19:04:58 +00:00
Duraid Madina
63f75bdf49 ia64 asmprinter fixes: 
- turn off assembler's autoalignment
  - set FunctionAddrPrefix/Suffix so that .data8 entries pointing to
    functions have their value wrapped in @fptr(), so that a function
    descriptor will be materialized for that function.

llvm-svn: 21025
 2005-04-02 12:30:47 +00:00
Duraid Madina
3a10f491f0 add support for prefix/suffix strings to go around GlobalValue(s) 
(which may or be function pointers) in the asmprinter. For the moment,
this changes nothing, except the IA64 backend which can use this to write:

  data8.ua  @fptr(blah__blah__mangled_function_name)

  (by setting FunctionAddrPrefix/Suffix to "@fptr(" / ")")

llvm-svn: 21024
 2005-04-02 12:21:51 +00:00
Duraid Madina
5367cc3b49 support IDEF, fnegabs (thanks sampo) 
llvm-svn: 21023
 2005-04-02 10:33:53 +00:00
Duraid Madina
81675e4031 add fnegabs op 
llvm-svn: 21022
 2005-04-02 10:06:27 +00:00
Nate Begeman
402c04ff16 Set shift amount to Extend 
Implement ISD::FABS and ISD::FNEG nodes
Implement SHL_PARTS, SRL_PARTS, and SRA_PARTS
Generate PowerPC 'fneg', 'fabs', and 'fnabs' instructions

llvm-svn: 21018
 2005-04-02 05:59:34 +00:00
Chris Lattner
8f30d63c1a add support for FABS and FNEG 
llvm-svn: 21015
 2005-04-02 05:30:17 +00:00
Chris Lattner
1a15f58a92 transform fabs/fabsf calls into FABS nodes. 
llvm-svn: 21014
 2005-04-02 05:26:53 +00:00
Chris Lattner
206a694a7b Expand fabs into fneg 
llvm-svn: 21013
 2005-04-02 05:26:37 +00:00
Duraid Madina
333132da85 add support FNEG and FABS 
llvm-svn: 21012
 2005-04-02 05:18:38 +00:00
Chris Lattner
fcf6ee0a8b Turn -0.0 - X -> fneg 
llvm-svn: 21011
 2005-04-02 05:04:50 +00:00
Chris Lattner
a5d4718875 This target doesn't support fabs/fneg yet. 
llvm-svn: 21010
 2005-04-02 05:03:24 +00:00
Chris Lattner
8644181cd6 Several changes mixed up here. First when legalizing a DAG with pcmarker, 
dont' regen the whole dag if unneccesary.  Second, fix and ugly bug with
the _PARTS nodes that caused legalize to produce multiples of them.
Finally, implement initial support for FABS and FNEG.  Currently FNEG is
the only one to be trusted though.

llvm-svn: 21009
 2005-04-02 05:00:07 +00:00
Chris Lattner
c8f36868e6 print fneg/fabs 
llvm-svn: 21008
 2005-04-02 04:58:41 +00:00
Chris Lattner
71434aa2dd add an fabs instr 
llvm-svn: 21006
 2005-04-02 04:31:56 +00:00
Chris Lattner
8ee783d9f0 Add support for 64-bit shifts. 
llvm-svn: 21005
 2005-04-02 04:01:14 +00:00
Chris Lattner
8be5696874 fix some bugs in the implementation of SHL_PARTS and friends. 
llvm-svn: 21004
 2005-04-02 04:00:59 +00:00
Chris Lattner
964ab5d408 Turn expanded shift operations into (e.g.) SHL_PARTS if the target supports it. 
llvm-svn: 21002
 2005-04-02 03:38:53 +00:00
Chris Lattner
33ca1ce8e0 Print some new nodes 
llvm-svn: 21001
 2005-04-02 03:30:42 +00:00
Chris Lattner
20027c6b30 Fix a bug when inserting a libcall into a function with no other calls. 
llvm-svn: 20999
 2005-04-02 03:22:40 +00:00
Nate Begeman
8d60ca616f Fix i64 returns 
Generate PowerPC 'subfic' instruction when appropriate

llvm-svn: 20995
 2005-04-02 00:42:16 +00:00
Nate Begeman
893f5729ce Fix a warning about an unhandled switch case 
llvm-svn: 20994
 2005-04-02 00:41:14 +00:00
Chris Lattner
67da3fdb70 Add support for ISD::UNDEF to the X86 be 
llvm-svn: 20990
 2005-04-01 22:46:45 +00:00
Nate Begeman
4034852ba9 Add ISD::UNDEF node 
Teach the SelectionDAG code how to expand and promote it
Have PPC32 LowerCallTo generate ISD::UNDEF for int arg regs used up by fp
  arguments, but not shadowing their value.  This allows us to do the right
  thing with both fixed and vararg floating point arguments.

llvm-svn: 20988
 2005-04-01 22:34:39 +00:00
Chris Lattner
375f5e6ed5 Fix another PATypeHolder error, contributed by Bill Wendling! 
llvm-svn: 20983
 2005-04-01 15:41:30 +00:00
Duraid Madina
48ef32d6d3 repair mindless SELECT waste. 
llvm-svn: 20982
 2005-04-01 10:35:00 +00:00
Nate Begeman
244b36582a Fix Olden/bh, CR0 was being set in the wrong order 
LowerCallTo and ISD::CALL are going to need to be modified, regs are being
set in the wrong order.

llvm-svn: 20981
 2005-04-01 08:57:43 +00:00
Nate Begeman
f3ead25b68 Also apply Chris's fix to FP select and SETCC 
llvm-svn: 20979
 2005-04-01 07:21:30 +00:00
Chris Lattner
0cd0036523 Move the selection of the arms of the select operation up to the conditional 
part to make sure we get the side effects and to avoid confusing the CFG.

llvm-svn: 20977
 2005-04-01 07:10:02 +00:00
Chris Lattner
c81870e4e6 print the machine CFG in the -print-machineinstrs dump 
llvm-svn: 20976
 2005-04-01 06:48:38 +00:00
Nate Begeman
e82a2d7373 Fix stores to global addresses 
Fix calls with no arguments

llvm-svn: 20975
 2005-04-01 05:57:17 +00:00
Nate Begeman
9d224ae29b Support indexed loads and stores. This drops Shootout/matrix time from 
18.8 to 14.8 seconds.  The Pattern ISel is now often faster than the
Simple ISel, esp. on memory intensive code.

llvm-svn: 20973
 2005-04-01 04:45:11 +00:00
Nate Begeman
af7c6366d7 Implement FP_TO_SINT and FP_TO_UINT 
llvm-svn: 20972
 2005-04-01 02:59:27 +00:00
Nate Begeman
552f6f5f4e Add support for adding 0.0 and -0.0 to the constant pool, since we lie and 
say that we support them, for the purposes of generating fsel instructions.

llvm-svn: 20970
 2005-04-01 01:08:07 +00:00
Nate Begeman
18b3394f4d Factor out common code, support FP comparison in folded SetCC 
llvm-svn: 20969
 2005-04-01 00:32:34 +00:00
Nate Begeman
fc89059914 fsel generation for f32 and f64 select 
generate compare immediate for integer compare with constant
fold setcc into branch
fold setcc into select

Code generation quality for Shootout is now on par with the Simple ISel

llvm-svn: 20968
 2005-03-31 23:55:40 +00:00
Andrew Lenharth
1ba016ab6f make fp div trick dependend on flag 
llvm-svn: 20967
 2005-03-31 22:02:25 +00:00
Andrew Lenharth
7db3834ecf PCMarker support for DAG and Alpha 
llvm-svn: 20965
 2005-03-31 21:24:06 +00:00
Duraid Madina
47fed18416 Assorted fixes: 
* Stop being pessimistic about output register allocation
  * Start to handle function descriptors: compute target GPs and so on
  when doing indirect calls etc. Not there yet, though. For the moment,
  we try to use _indirect_ branches wherever possible, to stress test
  function descriptors.
  * FP divide-by-zero should work now
  * add varargs (it doesn't work, though)

At this point, all of SingleSource passes (modulo C++ tests that are due
to issues with the CFE, see note in the README.) Much of MultiSource also
passes although there's still a ton of bugs around. Something for me to
work on tomorrow, then. :)

llvm-svn: 20960
 2005-03-31 12:31:11 +00:00
Duraid Madina
f2d1865c74 * declare local common symbols as such (.lcomm, not merely .common) 
* begin great adventure into correct function descriptor materialization

llvm-svn: 20956
 2005-03-31 07:40:24 +00:00
Duraid Madina
03efd3bea9 daintyness 
llvm-svn: 20955
 2005-03-31 07:36:43 +00:00
Duraid Madina
11ff0a2a5f add what we need to fudge a 'floating point conditional move', this is 
used to get FP div-by-zero working properly (shunt the right answer
depending on how frcpa sets its predicate output)

llvm-svn: 20954
 2005-03-31 07:32:32 +00:00
Nate Begeman
17ff2b3a87 Pass the correct values to the chain argument for node construction during 
LowerCallTo.
Handle ISD::ADD in SelectAddr, allowing us to have nonzero immediates for
loads and stores, amazing!

llvm-svn: 20946
 2005-03-31 02:05:53 +00:00
Nate Begeman
de4aac1374 Rewrite LowerCallTo and Select(ISD::CALL) to properly handle float varargs 
Tell the SelectionDAG ISel to expand SEXTLOAD of i1 and i8, rather than
  complicate the code in ISD::SEXTLOAD to do it by hand
Combine the FP and Int ISD::LOAD codegen
Generate better code for constant pool loads

As a result, all of Shootout, and likely many other programs are now
working.

llvm-svn: 20945
 2005-03-31 00:15:26 +00:00
Nate Begeman
9c5480beeb Fix calls whose arguments fit entirely in registers to not break the Chain. 
Implement SINT_TO_FP and UINT_TO_FP
Remove some dead code from the simple ISel

llvm-svn: 20944
 2005-03-30 19:38:35 +00:00
Andrew Lenharth
91bd9033c6 yea, fine Duraid 
llvm-svn: 20942
 2005-03-30 18:22:52 +00:00
Nate Begeman
c877844625 Fix frame index code to generate legal PowerPC instructions. About half of 
Shootout now works.

llvm-svn: 20940
 2005-03-30 02:23:08 +00:00
Nate Begeman
ec87399dac Fix external symbol printing in the AsmPrinter. Tell the ISel that we 
don't support things like memcpy directly.  This allows a handful of the
Shootout programs to work, yay!

llvm-svn: 20939
 2005-03-30 01:45:43 +00:00
Chris Lattner
abb59a3c21 Instead of setting up the CFG edges at selectiondag construction time, set 
them up after the code has been emitted.  This allows targets to select one
mbb as multiple mbb's as needed.

llvm-svn: 20937
 2005-03-30 01:10:47 +00:00
Chris Lattner
46c4246df1 don't depend on the cfg being set up yet 
llvm-svn: 20936
 2005-03-30 01:10:00 +00:00
Nate Begeman
8eddad3985 Fix BranchCC (it's still dumb), and implement FP select (also dumb) 
llvm-svn: 20935
 2005-03-29 22:48:55 +00:00
Nate Begeman
43b127ca0a Implement integer select and i1 sign extend 
llvm-svn: 20934
 2005-03-29 22:24:51 +00:00
Nate Begeman
d5d90ec76b Implement SetCC, fix ZERO_EXTEND_INREG 
llvm-svn: 20933
 2005-03-29 21:54:38 +00:00
Chris Lattner
761bb09edb import all of the rest of the stubs that dsa uses for direct comparison 
llvm-svn: 20932
 2005-03-29 20:36:05 +00:00
Tanya Lattner
bc14e623e3 Compare dependence analysis with llvm instructions versus machine instrutions. the problem with using machine instructions and alias analysis is that aa does not handle tmp instructions. 
llvm-svn: 20931
 2005-03-29 20:35:10 +00:00
Tanya Lattner
7edde71619 Dependence analyzer that just determines dependences within a loop for loads and stores using alias analysis. 
llvm-svn: 20930
 2005-03-29 20:33:42 +00:00
Chris Lattner
94ea4d104c learn about some more functions. 
llvm-svn: 20929
 2005-03-29 20:04:24 +00:00
Andrew Lenharth
21c4590f96 Fix up some types and constants 
llvm-svn: 20928
 2005-03-29 19:24:04 +00:00
Chris Lattner
cc1644eb2c Fix a problem where we not marking incoming arguments to functions with 
external linkage as incomplete.

llvm-svn: 20927
 2005-03-29 19:16:59 +00:00
Chris Lattner
02a4d3bd9b Fix a bug that andrew noticed where we do not correctly sign/zero extend 
returned integer values all of the way to 64-bits (we only did it to 32-bits
leaving the top bits undefined).  This causes problems for targets like alpha
whose ABI's define the top bits too.

llvm-svn: 20926
 2005-03-29 19:09:56 +00:00
Chris Lattner
39064a8ca0 there is no point comparing against null pointer. 
llvm-svn: 20925
 2005-03-29 17:44:52 +00:00
Chris Lattner
5ceaf630ab Fix a major problem with global variable initializers. This could cause 
us to have stuff pointing to the null pointer, which makes no sense
(the null ptr is an ssa value, not the null object)

llvm-svn: 20922
 2005-03-29 17:21:53 +00:00
Chris Lattner
3759d20b0f fix a warning in the optimized build 
llvm-svn: 20920
 2005-03-29 15:13:27 +00:00
Chris Lattner
4f9c2cde55 add some more functions, ignore setcc for constraints! 
llvm-svn: 20917
 2005-03-29 06:52:20 +00:00
Chris Lattner
9b3adb88b8 disable this transformation in the one obscure case that really pessimizes 
pointer analysis.

llvm-svn: 20916
 2005-03-29 06:37:47 +00:00
Chris Lattner
813ef90a12 Handle "known" external calls context sensitively, add support for realloc 
and a couple of other functions that are important.

Handle aggregate undef values for gv initializers

llvm-svn: 20914
 2005-03-29 06:09:07 +00:00
Nate Begeman
62e458272f Implement div, rem, and frameindex 
llvm-svn: 20907
 2005-03-29 00:03:27 +00:00
Nate Begeman
734a61f057 Pattern ISel: fix argument loading for i64s (thanks chris) 
Simple  ISel: fix i64 subtract

llvm-svn: 20903
 2005-03-28 23:08:54 +00:00
Nate Begeman
32d1caae6d Remove fake instruction 'subc' (mnemonic for subfc). 
More pattern isel updates

llvm-svn: 20902
 2005-03-28 22:28:37 +00:00
Chris Lattner
185e7e2c22 implement legalization of build_pair for nate 
llvm-svn: 20901
 2005-03-28 22:03:13 +00:00
Andrew Lenharth
c287cd1e4e First step in adding pcmarker intrinsic. Second step (soon) is adding backend support. 
llvm-svn: 20900
 2005-03-28 20:05:49 +00:00
Nate Begeman
2ab66f55b6 Implement proper loads and zero-extends of all types 
llvm-svn: 20897
 2005-03-28 19:36:43 +00:00
Duraid Madina
7b5f67baf9 Emit .global @function and .global @object entries so the Intel ias 
assembler may be used; identify LLVM output as such.

llvm-svn: 20892
 2005-03-28 15:21:43 +00:00
Chris Lattner
47fcba56f8 Teach andersens that non-escaping memory cannot be mod/ref'd by external fn calls. 
llvm-svn: 20891
 2005-03-28 06:21:17 +00:00
Misha Brukman
b97b449309 Fix grammar 
llvm-svn: 20890
 2005-03-28 04:32:12 +00:00
Chris Lattner
abb512a593 Make anders-aa much more precise by not being completely pessimistic about 
external functions.  Teach it about a few important ones.

llvm-svn: 20889
 2005-03-28 04:03:52 +00:00
Alkis Evlogimenos
e0e628a401 Rename createPromoteMemoryToRegister() to 
createPromoteMemoryToRegisterPass() to be consistent with other pass
creation functions.

llvm-svn: 20885
 2005-03-28 02:01:12 +00:00
Chris Lattner
691b1987e1 wrap some long lines 
llvm-svn: 20884
 2005-03-27 22:03:46 +00:00
Chris Lattner
6b31704450 remove ... 
llvm-svn: 20883
 2005-03-27 21:57:09 +00:00
Chris Lattner
15741f8877 speed up steens by using spliceFrom, improve its precision by realizing that 
an incomplete node cannot alias a complete node.

llvm-svn: 20882
 2005-03-27 21:56:55 +00:00
Chris Lattner
7f0903e187 teach andersens about undef 
llvm-svn: 20881
 2005-03-27 18:58:23 +00:00
Chris Lattner
de6cc372e3 Don't give up completely, maybe other AA can say something about this. 
llvm-svn: 20873
 2005-03-27 00:02:33 +00:00
Chris Lattner
3a88055932 Factor out percentage printing into its own function. Make two changes to 
the function: print more precision XX.X% instead of XX%, and cast to ULL
before scaling by 100/1000 to avoid wrap around for large numbers of queries
(such as occur for 253.perlbmk and 176.gcc)

llvm-svn: 20872
 2005-03-26 23:56:33 +00:00
Chris Lattner
b84076a278 Cache mapping information for a call site after computing it for a mod/ref 
query.  If the next mod/ref query happens to be for the same call site
(which is extremely likely), use the cache instead of recomputing the
callee/caller mapping.  This makes -aa-eval ***MUCH*** faster with
ds-aa

llvm-svn: 20871
 2005-03-26 23:29:03 +00:00
Chris Lattner
21d25dd835 Remove more long dead code: dsa doesn't provide must alias info 
llvm-svn: 20870
 2005-03-26 22:54:46 +00:00
Chris Lattner
8638fbf4d6 remove some unsafe code that has long been dead 
llvm-svn: 20869
 2005-03-26 22:48:42 +00:00
Chris Lattner
ee96215ded slightly improve mod/ref for DSAA by checking the globals graph for fallback 
llvm-svn: 20868
 2005-03-26 22:47:03 +00:00
Chris Lattner
02275101be Teach steens-aa two things about mod/ref information: 
1. If memory never escapes the program, it cannot be mod/ref'd by external
     functions.
  2. If memory is global never mod/ref'd in the program, it cannot be mod/ref'd
     by any call.

llvm-svn: 20867
 2005-03-26 22:43:20 +00:00
Chris Lattner
bbec058833 Interchange this loop so that we test all pointers against one call site 
before moving on to the next call site.  This will be a more efficient way
to compute the mod/ref set for AA implementations like DSA.

llvm-svn: 20866
 2005-03-26 22:16:44 +00:00
Nate Begeman
6b0fbf811f Fix that pesky floats in integer regs problem by assigning the f32 type to 
the correct register class.  Also remove the loading of float data into int
regs part of varargs; it will need to be implemented differently later.

llvm-svn: 20857
 2005-03-26 08:25:22 +00:00
Nate Begeman
31d175d1e5 Get closer to having varargs working. There's still something strange 
going on with copies between floating point and integer register files
being generated.  Once that is solved, varargs will be done.

llvm-svn: 20856
 2005-03-26 07:46:36 +00:00
Nate Begeman
69742e6ea1 Make 64bit args and float args work correct with calls. Thanks to Chris 
for explaining EXTRACT_ELEMENT to me.

llvm-svn: 20847
 2005-03-26 02:17:46 +00:00
Nate Begeman
f821401825 Change interface to LowerCallTo to take a boolean isVarArg argument. 
llvm-svn: 20842
 2005-03-26 01:29:23 +00:00
Nate Begeman
d3b5925b38 Next round of pattern isel changes, mostly dealing with calls. 
llvm-svn: 20841
 2005-03-26 01:28:53 +00:00
Nate Begeman
4106e81966 Correct a documention link 
llvm-svn: 20840
 2005-03-26 01:28:05 +00:00
Chris Lattner
d11e075664 no really, don't double count these nodes either! 
llvm-svn: 20837
 2005-03-25 20:54:45 +00:00
Chris Lattner
81e77226bb Don't count all of the nodes in the SCC once for each function in the SCC. 
llvm-svn: 20836
 2005-03-25 20:37:32 +00:00
Chris Lattner
14fd1844ba Grow the EQ classes for globals at the end of the BU pass. This shrinks 
memory usage in the TD pass for 254.gap from 31.3MB to 3.9MB.

llvm-svn: 20834
 2005-03-25 16:45:43 +00:00
Nate Begeman
ba1cd37734 Support global addresses and fix call returns. Varargs still aren't 
handled correctly for floating point arguments, or more than 8 arguemnts.
This does however, allow hello world to run.

llvm-svn: 20832
 2005-03-25 08:34:25 +00:00
Chris Lattner
8e8b8bb133 Enhance loopsimplify to preserve alias analysis instead of clobbering it. 
This prevents crashes on some programs when using -ds-aa -licm.

llvm-svn: 20831
 2005-03-25 06:37:22 +00:00
Chris Lattner
549f99e537 Treat free operations as volatile, since they cannot be moved. This fixes 
Transforms/LICM/2005-03-24-LICM-Aggregate-Crash.ll

llvm-svn: 20830
 2005-03-25 05:49:37 +00:00
Chris Lattner
4f4fa287ee Fix a bug where LICM was not updating AA information properly when sinking 
a pointer value out of a loop causing it to be duplicated.

llvm-svn: 20828
 2005-03-25 00:22:36 +00:00
Chris Lattner
52e28abe6e remove a debugging timer. 
llvm-svn: 20827
 2005-03-25 00:06:09 +00:00
Chris Lattner
5d60f10a1d Two changes here: 
1. Instead of copying Local graphs to the BU graphs to start with, use
     spliceFrom to do the job (which is constant time in this case).  On
     176.gcc, this chops off .17s from the bu pass.
  2. When building SCC graphs, simplify the logic and use spliceFrom to
     do the heavy lifting, instead of cloneInto/delete.  This slices
     another .14s off 176.gcc.

llvm-svn: 20826
 2005-03-25 00:05:04 +00:00
Chris Lattner
02206c42f2 Make the spliceFrom case where one graph is completely empty be constant time. 
llvm-svn: 20825
 2005-03-25 00:02:41 +00:00
Chris Lattner
a90eb0ff31 add a new DSGraph::spliceFrom method, which violently takes the content of 
one graph and plops it into another, without breaking a sweat.

llvm-svn: 20824
 2005-03-24 23:46:04 +00:00
Nate Begeman
6b11098886 Implement next round of Pattern ISel fixes 
1. void returns
2. multiplies
3. calls

llvm-svn: 20822
 2005-03-24 23:35:30 +00:00
Nate Begeman
613e54d5f0 Fix an incorrect argument being passed to BuildMI for indirect calls. 
llvm-svn: 20821
 2005-03-24 23:34:38 +00:00
Chris Lattner
5f6b30b7c0 This replaces the correct but slow code with a more aggressive scc-finder 
based approach to find globals and call sites that need to be copied.  This
speeds up the BU pass on 176.gcc from 22s back up to 2.3s.  Not as good
as 1.5s, but at least it's correct :)

llvm-svn: 20820
 2005-03-24 23:06:02 +00:00
Chris Lattner
dec4b495c9 only look at successors of globals. This gets us down to "only" 22s in the 
bu pass for 176.gcc

llvm-svn: 20818
 2005-03-24 21:17:27 +00:00
Chris Lattner
0a5c8b7f21 Unfortunately, a previous patch was not safe. Revert it, reimplement 
something correct. Unfortunately this takes 176.gcc's BU phase back
up to 29s from 1.5.  This fixes DSGraph/2005-03-24-Global-Arg-Alias.ll

llvm-svn: 20817
 2005-03-24 21:07:47 +00:00
Nate Begeman
4584ca0554 Commit Gabor Greif's patch to use iterators in lowering intrinsics. 
llvm-svn: 20816
 2005-03-24 20:07:16 +00:00
Chris Lattner
32dc61b75e don't bother |'ing in 0's 
llvm-svn: 20815
 2005-03-24 18:42:51 +00:00
Chris Lattner
0530cce5a5 be more aggressive about incompleteness marking 
llvm-svn: 20814
 2005-03-24 18:42:28 +00:00
Chris Lattner
ad07b1bc54 eliminate dead variables, patch contributed by Gabor Greif! 
llvm-svn: 20812
 2005-03-24 17:32:20 +00:00
Nate Begeman
833c1d0994 Implement more of the PPC32 Pattern ISel: 
1) dynamic stack alloc
2) loads
3) shifts
4) subtract
5) immediate form of add, and, or, xor
6) change flag from -pattern-isel to -enable-ppc-pattern-isel

Remove dead arguments from getGlobalBaseReg in the simple ISel

llvm-svn: 20810
 2005-03-24 06:28:42 +00:00
Chris Lattner
a42c4a0874 Fix silly "no newline at end of file" warning 
llvm-svn: 20809
 2005-03-24 06:16:18 +00:00
Chris Lattner
56f3525a1d Fix compilation errors, patch contributed by the fabulous Bill Wendling! 
llvm-svn: 20808
 2005-03-24 05:13:53 +00:00
Chris Lattner
2e2035aa72 fix a compilation error, patch contributed by Bill Wendling! 
llvm-svn: 20807
 2005-03-24 05:12:48 +00:00
Nate Begeman
0e77845b7e Addition of the PPC32 Pattern ISel. While it is far from complete, it will 
be brought up to parity with the current simple ISel in the coming days.
Currently, -pattern-isel is required to trigger it.

llvm-svn: 20805
 2005-03-24 04:41:43 +00:00
Nate Begeman
175a9f1cc6 Remove comments that are now meaningless from the pattern ISels, at Chris's 
request.

llvm-svn: 20804
 2005-03-24 04:39:54 +00:00
Chris Lattner
120bfecc01 Fix a crash while promoting a value out of a loop from a global variable 
when using ds-aa

llvm-svn: 20802
 2005-03-24 04:22:04 +00:00
Chris Lattner
586f97a8b6 teach ds-aa about mod/ref for external function calls. 
llvm-svn: 20801
 2005-03-24 03:04:50 +00:00
Chris Lattner
1a860712dc Simplify dead code into a fixme :) 
llvm-svn: 20800
 2005-03-24 02:41:19 +00:00
Chris Lattner
1dfea3e0f7 fix a compiler crash in runtime/libprofile 
llvm-svn: 20799
 2005-03-24 01:22:52 +00:00
Chris Lattner
be7663e15e wrap a long line 
llvm-svn: 20797
 2005-03-23 23:51:12 +00:00
Chris Lattner
78ee200153 If we are calling an external function, chain to another AA to potentially 
decide, don't just immediately give up.

This implements GlobalsModRef/chaining-analysis.ll

llvm-svn: 20796
 2005-03-23 23:49:47 +00:00
Chris Lattner
e64b77f6c3 Make this more efficient by only making one virtual method call. 
llvm-svn: 20793
 2005-03-23 23:26:58 +00:00
Chris Lattner
db762dadcb Make this a bit more aggressive 
llvm-svn: 20792
 2005-03-23 22:06:41 +00:00
Chris Lattner
03631d6bc4 a hack to allow count-aa to work with ds-aa :( 
llvm-svn: 20791
 2005-03-23 21:59:34 +00:00
Chris Lattner
0fa70f79a6 Add two options to allow -count-aa to print queries either (1) all queries, 
or (2) only queries that are not successful (e.g. return may alias)

llvm-svn: 20790
 2005-03-23 21:59:07 +00:00
Chris Lattner
1dbe1592ed enable -debug-only=licm 
llvm-svn: 20788
 2005-03-23 21:00:12 +00:00
Chris Lattner
06fa97abf9 turn a dead conditional into an assert. 
llvm-svn: 20787
 2005-03-23 20:12:08 +00:00
Chris Lattner
543acffe45 Totally gut mergeInGraph. There is absolutely no reason to be merging 
global roots in from callees to callers.  The BU graphs do not have accurate
globals information and all of the clients know it.  Instead, just make sure
the GG is up-to-date, and they will be perfectly satiated.

This speeds up the BU pass on 176.gcc from 5.5s to 1.5s, and Loc+BU+TD
from 7s to 2.7s.

llvm-svn: 20786
 2005-03-23 20:08:59 +00:00
Chris Lattner
08302340ff wrap a long line 
llvm-svn: 20785
 2005-03-23 16:43:11 +00:00
Andrew Lenharth
b1bd2e2900 don't lie to the register allocator 
llvm-svn: 20784
 2005-03-23 15:20:01 +00:00
Chris Lattner
6222df7351 Make -steens-aa more conservative (aka correct) by making sure to obey 
incompleteness flags.

Make it more aggressive by taking field sensitive information into
account.

llvm-svn: 20781
 2005-03-23 01:48:09 +00:00
Tanya Lattner
d7b8fb8263 Added alias analysis. 
Fixed many many bugs.
This now works on almost all Singlesource , and most of MultiSource.

llvm-svn: 20780
 2005-03-23 01:47:20 +00:00
Chris Lattner
995ce252d8 implement Analysis/DSGraph/field-sensitive.ll 
llvm-svn: 20779
 2005-03-23 01:47:19 +00:00
Chris Lattner
8fa2449908 don't crash in some bad cases. 
llvm-svn: 20776
 2005-03-23 01:29:26 +00:00
Chris Lattner
6d9578f11d Several changes here: 
1. Increase max node size from 64->256 to avoid collapsing an important
   structure in 181.mcf
2. If we have multiple calls to an indirect call node with an indirect
   callee, fold these call nodes together, to avoid DSA turning apoc into
   a flaming fireball of death when analyzing 176.gcc.
  With this change, 176.gcc now takes ~7s to analyze for loc+bu+td, with
  5.7s of that in the BU pass.

llvm-svn: 20775
 2005-03-22 23:54:52 +00:00
Chris Lattner
6736ff36a1 Mark external globals incomplete in the BU Globals graph, fixing 
Analysis/DSGraph/2005-03-22-IncompleteGlobal.ll

llvm-svn: 20773
 2005-03-22 22:10:22 +00:00
Andrew Lenharth
61312ca088 hum, it is good to use real instructions 
llvm-svn: 20769
 2005-03-22 16:42:52 +00:00
Chris Lattner
f975e2350a Directly count the number of memory instructions. 
llvm-svn: 20766
 2005-03-22 03:55:10 +00:00
Chris Lattner
b847572d0e Timers SHOULD NOT record the time taken to count the bytes allocated in the heap! 
llvm-svn: 20765
 2005-03-22 03:20:38 +00:00
Chris Lattner
361cab323a Remove an iteration pass over the entire scalarmap for each function created 
by not allowing integer constants to get into the scalar map in the first
place.

llvm-svn: 20764
 2005-03-22 02:45:13 +00:00
Chris Lattner
d1e1c51e8e When making a clone of a DSGraph from the BU pass, make sure to remember that 
this clone is supposed to be used for *ALL* of the functions in the SCC.

This fixes the memory explosion problem the TD pass was having, reducing the
memory growth from 24MB -> 3.5MB on povray and 270MB ->8.3MB on perlbmk!
This obviously also speeds up the TD pass *a lot*.

llvm-svn: 20763
 2005-03-22 01:50:42 +00:00
Chris Lattner
d36dab8b4c Don't use operator[], use the new method instead, which is faster. This speeds 
up the TD pass about 30% for povray and perlbmk.  It's still not clear why
copying a 5MB set of graphs turns into a 25MB set of graphs though :(

llvm-svn: 20762
 2005-03-22 01:42:59 +00:00
Chris Lattner
0ed923c45a Now that the dead ctor is gone, nothing uses the old node mapping exported by 
cloneInto: make it an internally used mapping.

llvm-svn: 20760
 2005-03-22 00:36:51 +00:00
Chris Lattner
4264b1d97e remove a dead ctor 
llvm-svn: 20759
 2005-03-22 00:33:35 +00:00
Chris Lattner
81a96c578c now that the second argument is always this->ReturnNodes, don't bother passing it. 
llvm-svn: 20758
 2005-03-22 00:29:44 +00:00
Chris Lattner
4c9d4fe24f instead of using a local RetValMap, just use the graph we are cloning into 
for the return node map.

llvm-svn: 20757
 2005-03-22 00:25:52 +00:00
Andrew Lenharth
5bd65ee784 two things: 1)evilness reduction patch, reduces the number of instructions hiding in the small jump CC moving code. 2)implement div of small data types by FP DIV (also reduces evilness and should speed things up) 
llvm-svn: 20756
 2005-03-22 00:24:07 +00:00
Chris Lattner
bd9d33173c now that the valuemapping is always the local scalar map, we can eliminate 
this identity merge.

llvm-svn: 20755
 2005-03-22 00:22:45 +00:00
Chris Lattner
ffa612a1fd remove the second argument to cloneInto 
llvm-svn: 20754
 2005-03-22 00:21:05 +00:00
Chris Lattner
940600a185 add some timers, don't clone aux nodes 
llvm-svn: 20752
 2005-03-22 00:12:00 +00:00
Chris Lattner
21b3519b2e move this out of line 
llvm-svn: 20751
 2005-03-22 00:09:45 +00:00
Chris Lattner
e1c098449c don't generate temporary scalarmaps. 
llvm-svn: 20749
 2005-03-22 00:04:21 +00:00
Chris Lattner
1ce92ebd00 allow passing clone flags down to cloneInto 
llvm-svn: 20748
 2005-03-21 22:49:53 +00:00
Chris Lattner
97fc8f85d1 Enhance the TD pass to build composite graphs when we have indirect call 
sites that target multiple callees.  If we have a function table, for
example, with N callees, and M callers call through it, we used to have
to perform O(M*N) graph inlinings.  Now we perform O(M+N) inlinings.

This speeds up the td pass on perlbmk from 36.26s to 25.75s.

llvm-svn: 20743
 2005-03-21 20:31:29 +00:00
Chris Lattner
8b4af69d5b make this const correct 
llvm-svn: 20741
 2005-03-21 20:28:50 +00:00
Chris Lattner
15ab6ab0c1 Fix a major problem where we didn't add call graph edges for call sites with 
more than 1 callee.  This fixes Analysis/DSGraph/FunctionPointerTable-const.ll

llvm-svn: 20740
 2005-03-21 20:20:49 +00:00
Misha Brukman
04d6d0666d We may be adding functions to the Module during initialization, so 
conservatively, it's modified

llvm-svn: 20735
 2005-03-21 19:22:14 +00:00
Chris Lattner
7c6e697cc6 Ugh, for some reason, I can't call this unless the reference is const!?!?!? 
llvm-svn: 20732
 2005-03-21 10:00:45 +00:00
Chris Lattner
83ce1e319c The reachability cloner should add arguments to merged calls when the RHS of 
the merge has more operands than the LHS.

llvm-svn: 20731
 2005-03-21 09:39:51 +00:00
Chris Lattner
3dd7af56a4 'note to self' 
llvm-svn: 20727
 2005-03-21 08:43:32 +00:00
Chris Lattner
ce471ff361 Remove a bunch of cruft and dead code for handling the case when types were 
defined in function constant pools.  The assembler grammar has long
disallowed functions from having constant pools, so all of this stuff is
dead.

This makes it an immediate error for functions to refer to nonexisting
types, fixing Regression/Verifier/2005-03-21-UndefinedTypeReference.ll.

Before, references to non-existing types in functions would only be
detected when the subsequent function was parsed, due to the call to
"ResolveTypes".  "ResolveTypes" has not resolved any types for a long time,
instead it emitted an error message if no resolved types are left.  Since
the only caller of this method is in the module code, just inline it.

llvm-svn: 20726
 2005-03-21 06:27:42 +00:00
Tanya Lattner
156e5a6897 Make this method non-const. Making it const causes the const version of 
getIGroup to be called instead of the non-const one.  These two methods
have (??) different behavior, so this change fixes bugs.

llvm-svn: 20724
 2005-03-21 06:07:43 +00:00
Chris Lattner
1f266b60f8 Change the way that the TD pass inlines graphs. Instead of inlining each 
graph into all of the functions it calls when we visit a graph, change it so
that the graph visitor inlines all of the callers of a graph into the current
graph when it visits it.

While we're at it, inline global information from the GG instead of from each
of the callers.  The GG contains a superset of the info that the callers do
anyway, and this way we only need to do it one time (not one for each caller).

This speeds up the TD pass substantially on several programs, and there is
still room for improvement.  For example, the TD pass used to take 147s
on perlbmk, it now takes 36s.  On povray, we went from about 5s to 1.97s.
134.perl is down from ~1s for Loc+BU+TD to .6s.

The TD pass needs a lot of improvement though, which will occur with later
patches.

llvm-svn: 20723
 2005-03-21 04:55:35 +00:00
Chris Lattner
85387b86fa Don't strip modref bits when inlining down the call graph. This fixes 
the DSGraph/2003-06-30-TopDownResolve.ll regression from last night.

llvm-svn: 20717
 2005-03-20 18:02:56 +00:00
Chris Lattner
da405e3c5d Remove the ability to keep track of inlined globals, which is always dead. 
llvm-svn: 20716
 2005-03-20 04:30:30 +00:00
Chris Lattner
0d3ba2a064 This call is always a noop, remove it. 
llvm-svn: 20714
 2005-03-20 04:29:54 +00:00
Chris Lattner
715493901e remove some pointless asserts 
llvm-svn: 20713
 2005-03-20 04:29:39 +00:00
Chris Lattner
a09de3da5d -steens doesn't use the inlined globals facility. 
llvm-svn: 20712
 2005-03-20 04:23:57 +00:00
Chris Lattner
cb59ad59dc Build EC's for globals twice. The first is after constructing the initial 
Globals Graph for the local pass, the second is after all of the locals
graphs have been constructed.  This allows for many additional global EC's
to be recognized that weren't before.  This speeds up analysis of programs
like 177.mesa, where it changes DSA from taking 0.712s to 0.4018s.

llvm-svn: 20711
 2005-03-20 03:32:35 +00:00
Chris Lattner
4928678f91 Add a new DSNode::removeGlobal method. 
llvm-svn: 20710
 2005-03-20 03:29:54 +00:00
Chris Lattner
f61874f79a Transform BU pass to not use the horrible DSCallSiteIterator class. 
llvm-svn: 20708
 2005-03-20 02:42:07 +00:00
Chris Lattner
1648378d0e Implement new methods for dealing with DSNode global lists, rename uses of 
old methods.

llvm-svn: 20707
 2005-03-20 02:41:38 +00:00
Chris Lattner
2a3687ecb0 use simpler methods. 
llvm-svn: 20706
 2005-03-20 02:41:16 +00:00
Chris Lattner
dddb514aa9 method was renamed. 
llvm-svn: 20705
 2005-03-20 02:40:27 +00:00
Chris Lattner
4c11b8e07d print out equiv class info. 
llvm-svn: 20704
 2005-03-20 02:40:11 +00:00
Chris Lattner
73ae41b317 some methods got renamed 
llvm-svn: 20703
 2005-03-20 02:40:04 +00:00
Chris Lattner
da7b948969 Make use of simpler DSNode methods. 
llvm-svn: 20702
 2005-03-20 02:39:49 +00:00
Chris Lattner
51f7c8a068 #ifdef out a function only used by #ifdef'd code. 
llvm-svn: 20700
 2005-03-20 02:14:15 +00:00
Chris Lattner
904a0ddcc5 comment cleanup 
llvm-svn: 20699
 2005-03-20 01:18:00 +00:00
Chris Lattner
f17cd879c0 Create an equivalence class of global variables that DSA will never be able 
to tell apart anyway, and only track the leader for of these equivalence
classes in our graphs.

This dramatically reduces the number of GlobalValue*'s that appear in scalar
maps, which A) reduces memory usage, by eliminating many many scalarmap entries
and B) reduces time for operations that need to execute an operation for each
global in the scalar map.

As an example, this reduces the memory used to analyze 176.gcc from 1GB to
511MB, which (while it's still way too much) is better because it doesn't hit
swap anymore.  On eon, this shrinks the local graphs from 14MB to 6.8MB,
shrinks the bu+td graphs of povray from 50M to 40M, shrinks the TD graphs of
130.li from 8.8M to 3.6M, etc.

This change also speeds up DSA on large programs where this makes a big
difference.  For example, 130.li goes from 1.17s -> 0.56s, 134.perl goes
from 2.14 -> 0.93s, povray goes from 15.63s->7.99s (!!!).

This also apparently either fixes the problem that caused DSA to crash on
perlbmk and gcc, or it hides it, because DSA now works on these.  These
both take entirely too much time in the TD pass (147s for perl, 538s for
gcc, vs 7.67/5.9s in the bu pass for either one), but this is a known
problem that I'll deal with later.

llvm-svn: 20696
 2005-03-19 22:23:45 +00:00