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Author SHA1 Message Date
Chris Lattner
e04cefc866 Force coallescing of live ranges that have a single definition, even if they 
interfere.  Because these intervals have a single definition, and one of them
is a copy instruction, they are always safe to merge even if their lifetimes
interfere.  This slightly reduces the amount of spill code, for example on
252.eon, from:

 12837 spiller               - Number of loads added
  7604 spiller               - Number of stores added
  5842 spiller               - Number of register spills
 18155 liveintervals         - Number of identity moves eliminated after coalescing

to:

  12754 spiller               - Number of loads added
   7585 spiller               - Number of stores added
   5803 spiller               - Number of register spills
  18262 liveintervals         - Number of identity moves eliminated after coalescing

The much much bigger win would be to merge intervals with multiple definitions
(aka phi nodes) but this is not that day.

llvm-svn: 15124
 2004-07-23 05:26:05 +00:00
Misha Brukman
2ad2adf8cb Bool alignment on MacOSX/PowerPC is 4 bytes. 
llvm-svn: 15122
 2004-07-23 01:11:46 +00:00
Misha Brukman
3f338d98a6 * Change class of BoolTy back to cInt 
* Fix indentation back to 2 spaces

llvm-svn: 15121
 2004-07-23 01:11:19 +00:00
Misha Brukman
2b0205b8ab * Add BoolAlignment to TargetData, default is 1 byte, size 1 byte 
* Convert tabs to spaces

llvm-svn: 15120
 2004-07-23 01:09:52 +00:00
Chris Lattner
9c326b6cc8 costmetic changes 
llvm-svn: 15118
 2004-07-22 23:05:12 +00:00
Chris Lattner
54f8932b3b Fix broken -debug printing 
llvm-svn: 15115
 2004-07-22 21:54:22 +00:00
Chris Lattner
0fbe7e1e60 The default has not been 'simple' for AGES! 
llvm-svn: 15114
 2004-07-22 21:46:02 +00:00
Chris Lattner
093d84c480 Remove some (LARGE) abandoned code for the release. If this is ever needed 
again in the future, it can be resurrected out of CVS

llvm-svn: 15112
 2004-07-22 21:30:35 +00:00
Chris Lattner
767638fe6d Make linear scan the default 
llvm-svn: 15111
 2004-07-22 18:42:00 +00:00
Misha Brukman
1109566c8d * Change bool from cInt to cByte (for now) 
* Don't allow negative immediates to users of unsigned immediates
* Fix long compares
* Support <const int>, op as a potential immediate candidate
* Fix sign extension of short and byte loads
* Fix and improve integer casts
* Fix passing of doubles as vararg functions

Patch contributed by Nate Begeman.

llvm-svn: 15109
 2004-07-22 15:58:04 +00:00
Alkis Evlogimenos
4b4712b58d Put variable name to a separate line. 
llvm-svn: 15108
 2004-07-22 15:30:33 +00:00
Misha Brukman
752cdcc2a5 Fix indentation and wrap code at 80 cols 
llvm-svn: 15107
 2004-07-22 15:26:23 +00:00
Alkis Evlogimenos
ba7fdf3568 Sorting is now handled by both linearscan and iterative scan so live 
intervals need not be sorted anymore. Removing this redundant step
improves LiveIntervals running time by 5% on 176.gcc.

llvm-svn: 15106
 2004-07-22 15:18:10 +00:00
Alkis Evlogimenos
717d6cd988 Fit to 80 columns. 
llvm-svn: 15105
 2004-07-22 14:29:31 +00:00
Alkis Evlogimenos
0292045897 Some compile time improvements resulting in a 1sec speedup in the 5sec 
compilation of gcc:

* Use vectors instead of lists for the intervals sets
* Use a heap for the unhandled set to keep intervals always sorted and
  makes insertions back to the heap very fast (compared to scanning a
  list)

llvm-svn: 15103
 2004-07-22 08:14:44 +00:00
Chris Lattner
7e9731bc4f This is a trivial dead store elimination pass. It very very simple and 
can be improved in many ways.  But: stop laughing, even with -basicaa it
deletes 15% of the stores in 252.eon :)

llvm-svn: 15101
 2004-07-22 08:00:28 +00:00
Chris Lattner
e3adc34ea7 Clean up reference counting to stop "leaking" alias sets 
llvm-svn: 15099
 2004-07-22 07:58:18 +00:00
Chris Lattner
21c0ddacf2 Remove extraneous punctuation 
llvm-svn: 15098
 2004-07-22 05:51:56 +00:00
Chris Lattner
7b301dfa9d Update GC intrinsics to take a pointer to the object as well as a pointer 
to the field being updated.  Patch contributed by Tobias Nurmiranta

llvm-svn: 15097
 2004-07-22 05:51:13 +00:00
Chris Lattner
59c0771263 Updates to gc intrinsics, contributed by Tobias Nurmiranta 
llvm-svn: 15096
 2004-07-22 05:50:01 +00:00
Alkis Evlogimenos
1cae25921d Use reverse iterators when updating the vector, since scanning from 
the end will reduce erase() runtimes.

llvm-svn: 15093
 2004-07-22 02:16:53 +00:00
Chris Lattner
25dd6b0a24 That funny 2-address lowering pass can also cause multiple definitions, 
fortunately, they are easy to handle if we know about them.  This patch fixes
some serious pessimization of code produced by the linscan register allocator.

llvm-svn: 15092
 2004-07-22 00:04:14 +00:00
Chris Lattner
eb21652fba Minor cleanups 
llvm-svn: 15091
 2004-07-21 23:17:57 +00:00
Chris Lattner
e3d3cd3e71 Fix cases where we generated horrible code like this: 
mov %EDI, 12
        add %EDI, %ECX
        mov %ECX, 12
        add %ECX, %EDX
        mov %EDX, 12
        add %EDX, %ESI

instead (really!) generate this:

        add %ECX, 12
        add %EDX, 12
        add %ESI, 12

llvm-svn: 15090
 2004-07-21 21:28:26 +00:00
Brian Gaeke
f18cdca667 These files don't need to include <iostream> since they include "Support/Debug.h". 
llvm-svn: 15089
 2004-07-21 20:50:33 +00:00
Misha Brukman
28e92a3fde * Add the lost fix to define the second reg of a 2-reg representation of longs 
* Fix opcode RLWNM -> RLWINM since it uses an immediate const shift value

llvm-svn: 15087
 2004-07-21 20:30:18 +00:00
Misha Brukman
9543849102 * Speed up canUseAsImmediateForOpcode() by comparing Operand before 
dyn_cast<>ing and checking Constant's value
* Convert tabs to spaces

llvm-svn: 15086
 2004-07-21 20:22:06 +00:00
Chris Lattner
b77bda4432 * Further cleanup. 
* Test for whether bits are shifted out during the optzn.

If so, the fold is illegal, though it can be handled explicitly for setne/seteq

This fixes the miscompilation of 254.gap last night, which was a latent bug
exposed by other optimizer improvements.

llvm-svn: 15085
 2004-07-21 20:14:10 +00:00
Misha Brukman
7507403c2b * Fix printing of signed immediate values (Nate Begeman) 
* Fix printing of `zeroinitializer'
* Fix printing of `linkonce' globals, complete with stubs

llvm-svn: 15084
 2004-07-21 20:11:11 +00:00
Misha Brukman
64f203922d * Fix printing of signed immediate values 
* Generation of opcodes that take 16 bit immediates
* Rewrote multiply to be correct for 64 bit values
* Rewrote all the long handling to be correct for PowerPC
* Fix visitSelectInst() to define the upper register of the pair of regs
  representing a long value

Patch contributed by Nate Begeman.

llvm-svn: 15083
 2004-07-21 20:09:08 +00:00
Chris Lattner
a3c10c2012 Make cast-cast code a bit more defensive 
"simplify" a bit of code for comparison/and folding

llvm-svn: 15082
 2004-07-21 19:50:44 +00:00
Misha Brukman
752584b520 Use addSImm() instead of addImm() for stack offsets, which may be negative. 
llvm-svn: 15081
 2004-07-21 19:36:57 +00:00
Alkis Evlogimenos
40d8d044fe Fix analysis name. 
llvm-svn: 15078
 2004-07-21 17:23:44 +00:00
Misha Brukman
3d395cbda3 Add SUBI instruction 
llvm-svn: 15077
 2004-07-21 15:53:04 +00:00
Alkis Evlogimenos
183f8af791 Clear spilled list at once. Remove unused vector. 
llvm-svn: 15073
 2004-07-21 12:00:10 +00:00
Alkis Evlogimenos
c767432a26 Change std::list into a std::vector for IntervalSets. This reduces 
compile time for 176.gcc from 5.6 secs to 4.7 secs.

llvm-svn: 15072
 2004-07-21 09:46:55 +00:00
Alkis Evlogimenos
8a162136e1 Improve file comment. 
llvm-svn: 15069
 2004-07-21 08:28:39 +00:00
Alkis Evlogimenos
b5f60641f4 Add Iterative scan register allocator. 
llvm-svn: 15068
 2004-07-21 08:24:35 +00:00
Alkis Evlogimenos
75dbcf6d06 Linearscan is no longer experimental. 
llvm-svn: 15067
 2004-07-21 08:18:50 +00:00
Chris Lattner
195950df76 Add capability to remove aliasing aliassets from an AST 
llvm-svn: 15066
 2004-07-21 07:04:26 +00:00
Chris Lattner
f9976c5dbf Make the AST interface a bit richer by returning whether an insertion caused 
an insertion or not (because the pointer set already existed).

llvm-svn: 15064
 2004-07-21 05:18:04 +00:00
Chris Lattner
62c40d3982 Remove special casing of pointers and treat them generically as integers of 
the appopriate size.  This gives us the ability to eliminate int -> ptr -> int

llvm-svn: 15063
 2004-07-21 04:27:24 +00:00
Chris Lattner
36940c22f7 Do not ignore casts unless they are pointer-pointer casts. This caused us 
to miscompile the SingleSource/Regression/C++/pointer_member.cpp program.

llvm-svn: 15062
 2004-07-21 03:56:54 +00:00
Brian Gaeke
1c49659e4f Solaris hack for isinf() 
llvm-svn: 15058
 2004-07-21 03:32:51 +00:00
Brian Gaeke
d8775ad4f1 Emit NaNs and INFs bit-identically to the bytecode file, if the system has 
printf("%a") support.
Patch contributed by Bill Wendling.

llvm-svn: 15056
 2004-07-21 03:15:26 +00:00
Brian Gaeke
be7ccca4ab Add platform-independent wrapper function for isinf(). 
Patch contributed by Bill Wendling.

llvm-svn: 15050
 2004-07-21 03:13:50 +00:00
Misha Brukman
3e3d141a92 Shorts are aligned to 2 bytes, bools to 1 byte (in structs). 
llvm-svn: 15048
 2004-07-20 20:59:57 +00:00
Misha Brukman
6283677946 Treat external variables similarly to those with weak linkage: load indirect. 
llvm-svn: 15047
 2004-07-20 20:43:05 +00:00
Misha Brukman
f47940855d Differentiate between global and weak symbol loads 
llvm-svn: 15037
 2004-07-20 15:52:25 +00:00
Misha Brukman
fe769110a0 * Differentiate between global and weak symbol loads 
* Fix functions that take more than 32 bytes of args
* Alignment of doubles in structs is 4 bytes, not 8
* Fix passing long args: rN = hi, rN+1 = lo
* Rewrite signed divide
* Rewrite Intrinsic::returnaddress

Patch courtesy of Nate Begeman.

llvm-svn: 15036
 2004-07-20 15:51:37 +00:00
Misha Brukman
5b5aff390a Differentiate between global and weak symbol loads 
llvm-svn: 15035
 2004-07-20 15:45:27 +00:00
Misha Brukman
1942534307 Double alignment in structs is 4 bytes, not 8. Patch by Nate Begeman. 
llvm-svn: 15034
 2004-07-20 15:43:25 +00:00
Alkis Evlogimenos
cb3b2fc439 Add function to clear all virtual->physical mappings but not assigned 
stack slots. This is in preparation for the iterative linear scan.

llvm-svn: 15032
 2004-07-20 13:28:17 +00:00
Alkis Evlogimenos
89ae43ca19 Remove unneeded functor. LiveInterval has a < operator. 
llvm-svn: 15031
 2004-07-20 10:20:03 +00:00
Chris Lattner
4e4b8b0ad2 Fix a serious code pessimization problem. If an inlined function has a single 
return, clone the 'ret' BB code into the block AFTER the inlined call, not the
other way around.

llvm-svn: 15030
 2004-07-20 05:45:24 +00:00
Chris Lattner
f8c20caf25 Implement Transforms/InstCombine/IntPtrCast.ll 
llvm-svn: 15029
 2004-07-20 05:21:00 +00:00
Chris Lattner
da83200d72 Ignore instructions that are in trivially dead functions. This allows us 
to constify 14 globals instead of 4 in a trivial C++ testcase.

llvm-svn: 15027
 2004-07-20 03:58:07 +00:00
Misha Brukman
0a12f91274 Fix stack frame layout in prologue/epilogue. Patch courtesy of Nate Begeman. 
llvm-svn: 15026
 2004-07-20 02:23:09 +00:00
Chris Lattner
f6eb30e9a8 Implement InstCombine/GEPIdxCanon.ll 
llvm-svn: 15024
 2004-07-20 01:48:15 +00:00
Chris Lattner
8277141f09 Implement SimplifyCFG/BrUnwind.ll 
llvm-svn: 15022
 2004-07-20 01:17:38 +00:00
Misha Brukman
6baf9045f6 Move handing of GlobalValues from getReg() to copyConstantToRegister(), this 
will avoid extra register-to-register copies.  Thanks to Chris for the idea.

llvm-svn: 15019
 2004-07-20 00:59:38 +00:00
Chris Lattner
d9c41a82a3 Rewrite cast->cast elimination code completely based on the information we 
actually care about.  Someday when the cast instruction is gone, we can do
better here, but this will do for now.  This implements
instcombine/cast.ll:test17/18 as well.

llvm-svn: 15018
 2004-07-20 00:59:32 +00:00
Misha Brukman
bec77933fa * Fn args passed in registers are now recorded as used by the call instruction 
`-> asm printer updated to not print out those registers with the call instr

All of Shootout tests now work.  Great thanks to Nate Begeman for the patch!

llvm-svn: 15015
 2004-07-20 00:42:19 +00:00
Misha Brukman
fdc633a29b * cFP class split into cFP32 and cFP64 
* Fn args passed in registers are now recorded as used by the call instruction
`-> asm printer updated to not print out those registers with the call instr
* Stack frame layout in prolog/epilog fixed, spills and vararg fns now work
* float/double to signed int codegen now correct
* various single precision float codegen bugs fixed
* const integer multiply codegen fixed
* select and setcc blocks inserted into the correct place in machine CFG
* load of integer constant code optimized

All of Shootout tests now work.  Great thanks to Nate Begeman for the patch!

llvm-svn: 15014
 2004-07-20 00:41:46 +00:00
Chris Lattner
e8b9b58454 While I'm at it, don't break codegen of mul by 3,5,9. 
llvm-svn: 15013
 2004-07-19 23:50:57 +00:00
Chris Lattner
f668465840 Generate better code for multiplies by negative constants like -4, -1, -9, etc. 
llvm-svn: 15012
 2004-07-19 23:47:21 +00:00
Alkis Evlogimenos
25fb592aa6 Remove dead code. 
llvm-svn: 15011
 2004-07-19 23:35:55 +00:00
Chris Lattner
c07b7fff45 Fix a bug that occurs when the last instruction in a range is dead 
llvm-svn: 15005
 2004-07-19 15:16:53 +00:00
Chris Lattner
bc53c119ac When joining intervals, join intervals in deeply nested loops first. This 
is a simple change, but seems to improve code a little.  For example, on
256.bzip2, we went from 75.0s -> 73.33s (2% speedup).

llvm-svn: 15004
 2004-07-19 14:40:29 +00:00
Chris Lattner
997f36e53f Split joinIntervals into two methods 
llvm-svn: 15003
 2004-07-19 14:08:10 +00:00
Reid Spencer
0bdb3605c7 bug 122: 
Simplify a conditional operator for a constant result from
GV->isNullValue()

llvm-svn: 15001
 2004-07-19 13:25:02 +00:00
Chris Lattner
7cdfccd573 Inline 4 methods 
llvm-svn: 15000
 2004-07-19 07:52:35 +00:00
Chris Lattner
22728e2f27 There is no need to store the MBB along with the MI any more, we can now 
ask instructions for their parent.

llvm-svn: 14998
 2004-07-19 07:04:55 +00:00
Chris Lattner
6c34920110 Simplify the interface to LiveVariables::addVirtualRegister(Killed|Dead) 
llvm-svn: 14997
 2004-07-19 06:55:21 +00:00
Chris Lattner
53fa752649 Remove the DefBlock element of VarInfo. DefBlock is always DefInst->getParent() 
llvm-svn: 14996
 2004-07-19 06:26:50 +00:00
Chris Lattner
5ef1aa2870 Err, fix last checkin 
llvm-svn: 14995
 2004-07-19 06:03:51 +00:00
Chris Lattner
b1e00216d7 Fix bugpoint miscompilation support on OS/X 
Patch contributed by the fabulous Nate Begeman.

llvm-svn: 14994
 2004-07-19 06:00:17 +00:00
Chris Lattner
e7104f6f7b Two changes, both very significant: 
* vreg <-> vreg joining now works, enable it unconditionally when joining
  is enabled (which is the default).
* Fix a serious pessimization of spill code where we were saying that a
  spilled DEF operand was live into the subsequent instruction.  This allows
  for substantially better code when spilling starts to happen.

llvm-svn: 14993
 2004-07-19 05:55:50 +00:00
Chris Lattner
70d06b5c25 See comments. The live intervals were not coming out of the spiller in sorted 
order, causing the inactive list in the linearscan list to get unsorted, which
basically fuxored everything up severely.

These seems to fix the joiner, so with more testing I will enable it by default.

llvm-svn: 14992
 2004-07-19 05:15:10 +00:00
Chris Lattner
f5bdaf62f8 Fix assertion to not dereference end! 
llvm-svn: 14991
 2004-07-19 05:02:09 +00:00
Chris Lattner
42b44d3d1c Add some asserts that the list of intervals returned by addIntervalsForSpills 
is sorted.  This is not the case currently, which is causing no end of
problems.

llvm-svn: 14990
 2004-07-19 04:47:36 +00:00
Chris Lattner
10caeead75 remove the mbbi2mbbMap_, which was just keeping track of mbb order anyway. 
Heavily refactor handleVirtualRegisterDef, adding comments and making it more
efficient.  It is also much easier to follow and convince ones self that it is
correct :)

Add -debug output to the joine, showing the result of joining the intervals.

llvm-svn: 14989
 2004-07-19 02:15:56 +00:00
Chris Lattner
caba8651cd fill comment to 80 cols 
remove map that is not needed

llvm-svn: 14988
 2004-07-19 02:13:59 +00:00
Chris Lattner
6dbdddfa28 classof implementations are now inlined 
llvm-svn: 14987
 2004-07-19 00:59:10 +00:00
Chris Lattner
1353dd5917 Method now returns null, dtor is inlined 
llvm-svn: 14983
 2004-07-19 00:55:35 +00:00
Reid Spencer
5be5bc8453 A description of what this library is about, reference to the documentation 
and a list of don'ts for the library. All so future maintainers don't
break the important contract this library has with its user: LLVM.

llvm-svn: 14979
 2004-07-18 22:33:08 +00:00
Reid Spencer
27fc19e4fc Initiali Makefile for this library. 
llvm-svn: 14977
 2004-07-18 22:31:28 +00:00
Chris Lattner
9d3ff75eba Add a workaround for a GCC 3.3.2 bug 
llvm-svn: 14976
 2004-07-18 21:56:20 +00:00
Chris Lattner
ffc1df7399 Fix a performance regression from the CPR patch, simplify code 
llvm-svn: 14974
 2004-07-18 21:34:16 +00:00
Chris Lattner
9de817e13e Strip out and simplify some code. This also fixes the regression last 
night compiling cfrac.  It did not realize that code like this:

int G; int *H = &G;

takes the address of G.

llvm-svn: 14973
 2004-07-18 19:56:20 +00:00
Chris Lattner
8c4d6aa7e8 Minor cleanup, no functionality change 
llvm-svn: 14972
 2004-07-18 18:59:44 +00:00
Chris Lattner
8eb32809bc Fix infinite loop 
llvm-svn: 14971
 2004-07-18 18:45:01 +00:00
Reid Spencer
7b03169e0e Remove an if statement that would never be reached. 
llvm-svn: 14968
 2004-07-18 08:41:47 +00:00
Reid Spencer
6d26720976 Delete a redundant if branch. 
llvm-svn: 14967
 2004-07-18 08:34:52 +00:00
Reid Spencer
3a18547fcb Expand the coercion of constants to include the newly constant Globals. 
llvm-svn: 14966
 2004-07-18 08:34:19 +00:00
Reid Spencer
2b7bae6b4f Delete a no-op loop. 
llvm-svn: 14965
 2004-07-18 08:32:43 +00:00
Reid Spencer
7236678c32 Expand the scope to include global values because they are now constants 
too.

llvm-svn: 14964
 2004-07-18 08:32:10 +00:00
Reid Spencer
90795f0825 Avoid an unnecessary isa<Constant>. 
llvm-svn: 14963
 2004-07-18 08:31:18 +00:00
Chris Lattner
80105701f5 Fix infinite loop gccld'ing povray 
llvm-svn: 14962
 2004-07-18 08:12:57 +00:00
Chris Lattner
c62e642a1a CPR Fixes 
llvm-svn: 14961
 2004-07-18 07:29:35 +00:00
Chris Lattner
b56b3b5eeb CPR fixes 
llvm-svn: 14960
 2004-07-18 07:26:17 +00:00
Chris Lattner
71f281984d Remove useless statistic, fix some slightly broken logic 
llvm-svn: 14958
 2004-07-18 07:22:58 +00:00
Chris Lattner
99e46b2e81 Fix a rather serious bug in previous checkin 
llvm-svn: 14957
 2004-07-18 06:56:58 +00:00
Reid Spencer
78477eb62b Shrink some code. 
llvm-svn: 14956
 2004-07-18 01:04:19 +00:00
Reid Spencer
7f33869f9b bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage

llvm-svn: 14953
 2004-07-18 00:44:37 +00:00
Reid Spencer
b6c894409b bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14951
 2004-07-18 00:41:27 +00:00
Reid Spencer
14243817ec bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14950
 2004-07-18 00:38:32 +00:00
Reid Spencer
2610477ab2 bug 122: 
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14949
 2004-07-18 00:37:35 +00:00
Reid Spencer
51149979ce bug 122: 
- Minimize redundant isa<GlobalValue> usage

llvm-svn: 14948
 2004-07-18 00:32:14 +00:00
Reid Spencer
2a8914b64b bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14947
 2004-07-18 00:31:05 +00:00
Reid Spencer
66f4e3dc24 bug 122: 
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14946
 2004-07-18 00:29:57 +00:00
Reid Spencer
2bfe4ec3cf bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Rename methods to get ride of ConstantPointerRef usage

llvm-svn: 14945
 2004-07-18 00:25:04 +00:00
Reid Spencer
55d436cc07 bug 122: 
- Excise dead CPR procesing.

llvm-svn: 14944
 2004-07-18 00:23:51 +00:00
Reid Spencer
56ec516cb4 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct test ordering for GlobalValue subclass

llvm-svn: 14943
 2004-07-18 00:19:45 +00:00
Reid Spencer
b339652b44 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14942
 2004-07-18 00:18:30 +00:00
Reid Spencer
f460e10236 bug 122: 
- Correct ordering of tests because for GlobalValue isa Constant

llvm-svn: 14941
 2004-07-18 00:16:21 +00:00
Reid Spencer
4cb4f5f488 User ValueListTy as the type of the ValueList. This avoides the ValueList 
from being treated like a Function which can cause the contents of the list
to be come invalidated.

llvm-svn: 14940
 2004-07-18 00:13:12 +00:00
Reid Spencer
99ac617179 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14939
 2004-07-18 00:12:03 +00:00
Reid Spencer
b320f8eb03 bug 122: 
- Update for BytecodeHandler interface change resuing from CPRs going away

llvm-svn: 14938
 2004-07-18 00:10:36 +00:00
Reid Spencer
6ed43e1320 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass
- Remove tabs
- Fix coments refering to ConstantPointerRef

llvm-svn: 14937
 2004-07-18 00:08:11 +00:00
Reid Spencer
4a586ee919 bug 122: 
- Move these functions from other places
- Provide implementations of Constant class overrides in GlobalValue

llvm-svn: 14936
 2004-07-18 00:06:26 +00:00
Reid Spencer
ad3ee0e6bb bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Replace tabs.

llvm-svn: 14935
 2004-07-18 00:03:48 +00:00
Reid Spencer
873e776581 bug 122: 
- Correct an assert to not have redundant isa<GlobalValue>

llvm-svn: 14934
 2004-07-18 00:02:41 +00:00
Reid Spencer
27b74ad249 bug 122: 
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14933
 2004-07-18 00:01:50 +00:00
Reid Spencer
4005f11ca3 bug 122: 
- Correct isa<Constant> for GlobalValue subclass
- Fix some tabs and indentation.

llvm-svn: 14932
 2004-07-17 23:57:36 +00:00
Reid Spencer
d83e76d112 bug 122: 
- Module doesn't need to manage ConstantPointerRefs any more.

llvm-svn: 14931
 2004-07-17 23:53:23 +00:00
Reid Spencer
0e268122cc bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14930
 2004-07-17 23:50:57 +00:00
Reid Spencer
daba673c69 bug 122: 
- Move GlobalValue and GlobalVariable implementations to Globals.cpp

llvm-svn: 14929
 2004-07-17 23:50:19 +00:00
Reid Spencer
56e2bed436 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass
- Delete ConstantPointerRef member function implementations

llvm-svn: 14928
 2004-07-17 23:48:33 +00:00
Reid Spencer
bc38cd572f bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14927
 2004-07-17 23:47:01 +00:00
Chris Lattner
a2b1dbead8 It looks like physref->virtreg joining is working fine. Enable it by default 
but make virtreg->virtreg joining stay off by default

llvm-svn: 14916
 2004-07-17 21:51:25 +00:00
Chris Lattner
9bcf258cc3 Make sure to emit the immediate byte for instructions like: 
shrd [mem], reg, imm

This fixes the jit-ls failure on 186.crafty.

llvm-svn: 14914
 2004-07-17 20:26:14 +00:00
Chris Lattner
d7905d828b Reserve the correct amt of space. 
llvm-svn: 14913
 2004-07-17 20:24:05 +00:00
Misha Brukman
c52cf4db44 We don't really need to #include IPO.h into this file. 
llvm-svn: 14911
 2004-07-17 18:37:46 +00:00
Chris Lattner
74807fe1a3 Fix incorrect computation of mod/ref sets. Do not ask for mod/ref information 
for objects of size 0.

llvm-svn: 14908
 2004-07-17 07:40:34 +00:00
Chris Lattner
2b68acbfe0 Print modref information in a useful way. 
llvm-svn: 14907
 2004-07-17 06:43:20 +00:00
Chris Lattner
49fd294675 Cleanups: fold two loops into one 
New features: -print-all-alias-modref-info option, print more info

llvm-svn: 14906
 2004-07-17 06:28:49 +00:00
Misha Brukman
36bf6aa37c * Use LI(S) to copy constants into registers intead of ADDI(S) as the latter is 
a funky way to "use" R0 for a 0-valued operand
* Add IMPLICIT_DEFs for incoming function arguments via registers to help the
  register allocator not clobber those registers
* Implement comparisons with longs
* Teach emitSelectOperation() to fold the SetCC operation

Patch contributed by Nate Begeman

llvm-svn: 14901
 2004-07-16 21:06:24 +00:00
Misha Brukman
3a720bbeaa * Store all non-volatile int registers R13-31 on the stack, restore on exit 
* Fix comment formatting

llvm-svn: 14900
 2004-07-16 20:55:20 +00:00
Misha Brukman
2fd8a66d40 Fix code formatting 
llvm-svn: 14899
 2004-07-16 20:54:25 +00:00
Misha Brukman
d2ddc81a25 Implement PowerPCInstrInfo::isMoveInstr(), patch by Nate Begeman 
llvm-svn: 14898
 2004-07-16 20:51:55 +00:00
Misha Brukman
2bfd750278 Add prototype for TargetInstrInfo::isMoveInstr() 
llvm-svn: 14897
 2004-07-16 20:50:55 +00:00
Misha Brukman
468900296b * Enable allocation of registers r2-r10 
* Allocate registers 13-31 backwards (to be able to store them all at once)

llvm-svn: 14896
 2004-07-16 20:35:20 +00:00
Misha Brukman
f93e5532d5 Add IMPLICIT_DEFS pseudo-instruction; patch by: Nate Begeman 
llvm-svn: 14895
 2004-07-16 20:33:41 +00:00
Misha Brukman
4b944fcdf9 The generated instruction selector isn't (yet) functional 
llvm-svn: 14894
 2004-07-16 20:31:13 +00:00
Misha Brukman
c3c9dc04ac * Output non-lazy linking stubs for external global variables 
* Get rid of dead and #if 0'd code
* Minor for loop speed-up: save end iterator instead of querying every time

llvm-svn: 14893
 2004-07-16 20:29:04 +00:00
Misha Brukman
ae7301c8b1 Correctly build shared objects on MacOS X for debugging code generators 
llvm-svn: 14892
 2004-07-16 19:45:45 +00:00
Misha Brukman
0d35548f37 Define double alignment as 8 bytes now that assert(DoubleAlignment == PointerSize) 
has been eliminated

llvm-svn: 14891
 2004-07-16 19:32:12 +00:00
Misha Brukman
0a92212542 * Add spaces between words and numbers in comments printed out for longs/floats 
* Print out IMPLICIT_DEFS as comments in the assembly, patch by Nate Begeman

llvm-svn: 14890
 2004-07-16 19:01:13 +00:00
Misha Brukman
dffcb6ec61 Fix grammar. 
llvm-svn: 14888
 2004-07-16 17:40:28 +00:00
Alkis Evlogimenos
ddd1db50f9 Add convinience constructor for function calls with two args. 
llvm-svn: 14885
 2004-07-16 12:04:28 +00:00
Brian Gaeke
b2af4f47b6 Add a class for pseudo-instructions. Use it. 
Add IMPLICIT_USE and IMPLICIT_DEF, a la X86.

llvm-svn: 14884
 2004-07-16 10:32:10 +00:00
Brian Gaeke
ec53196516 Add what will eventually be the TSFlags. Big switch(opcode) statements are bad. 
llvm-svn: 14883
 2004-07-16 10:31:59 +00:00
Brian Gaeke
0d262c839f Add special handling for pseudo-instructions (print them as comments). 
llvm-svn: 14882
 2004-07-16 10:31:47 +00:00
Brian Gaeke
11c7052fb5 Add to-do list. 
llvm-svn: 14881
 2004-07-16 10:31:36 +00:00
Brian Gaeke
53dc31efcd Do IMPLICIT_DEFs on incoming args' hard regs, to avoid confusing the regalloc. 
Support single-fp incoming args.
Support single-fp outgoing args ('call' operands).
Support double-fp return values.

llvm-svn: 14880
 2004-07-16 10:31:25 +00:00
Chris Lattner
60fb3d60a8 The powerpc is now gone. However it is now just known as the Skeleton target. 
llvm-svn: 14877
 2004-07-16 07:14:34 +00:00
Chris Lattner
9fa6dd88db Build the skeleton target 
llvm-svn: 14875
 2004-07-16 07:11:53 +00:00
Chris Lattner
d7e3eac718 Initial checkin of the rest of the skeleton target 
llvm-svn: 14874
 2004-07-16 07:11:15 +00:00
Chris Lattner
e06b3075f2 Initial skeleton tablegen files 
llvm-svn: 14873
 2004-07-16 06:29:19 +00:00
Chris Lattner
dc42265d57 Add skeleton makefile 
llvm-svn: 14872
 2004-07-16 06:20:55 +00:00
Chris Lattner
a413633d66 Initial readme 
llvm-svn: 14871
 2004-07-16 06:12:28 +00:00
Chris Lattner
f849543948 Fix the regressions handling unnamed global variables 
llvm-svn: 14870
 2004-07-16 01:18:09 +00:00
Chris Lattner
9b03d18729 IA64 compat 
llvm-svn: 14867
 2004-07-16 00:08:28 +00:00
Chris Lattner
c014005d53 Fix IA64 compatibility 
llvm-svn: 14866
 2004-07-16 00:06:01 +00:00
Chris Lattner
53c9460cde Use new macro 
llvm-svn: 14865
 2004-07-16 00:04:54 +00:00
Chris Lattner
763d51409f Be compatible with IA64 
llvm-svn: 14864
 2004-07-16 00:04:13 +00:00
Chris Lattner
952bbd726b This patch was contributed by Daniel Berlin! 
Speed up SCCP substantially by processing overdefined values quickly.  This
patch speeds up SCCP by about 30-40% on large testcases.

llvm-svn: 14861
 2004-07-15 23:36:43 +00:00
Chris Lattner
0193bbef1f Fix PR404 try #2 
This version takes about 1s longer than the previous one (down to 2.35s),
but on the positive side, it actually works :)

llvm-svn: 14856
 2004-07-15 08:20:22 +00:00
Chris Lattner
36f2a4eb77 Nuke a clearly bogus assertion 
llvm-svn: 14854
 2004-07-15 07:44:34 +00:00
Chris Lattner
fde0e6bb95 Revert previous patch until I get a bug fixed 
llvm-svn: 14853
 2004-07-15 05:36:31 +00:00
Chris Lattner
9896dfb8e7 Fix PR404: Loop simplify is really slow on 252.eon 
This eliminates an N*N*logN algorithm from the loop simplify pass, replacing
it with a much simpler and faster alternative.  In a debug build, this reduces
gccas time on eon from 85s to 42s.

llvm-svn: 14851
 2004-07-15 04:27:04 +00:00
Chris Lattner
d7870e4b1a Fixes for PR341 
llvm-svn: 14848
 2004-07-15 02:51:32 +00:00
Chris Lattner
94212f7102 Fixes for PR341 
llvm-svn: 14847
 2004-07-15 02:51:31 +00:00
Chris Lattner
47c6a06211 Fix for PR341 
llvm-svn: 14845
 2004-07-15 02:40:04 +00:00
Chris Lattner
b9ec0b791c Revert stuff that I didn't mean to checkin 
llvm-svn: 14844
 2004-07-15 02:33:38 +00:00
Chris Lattner
bb7fe18493 Fixes for PR341 
llvm-svn: 14843
 2004-07-15 02:31:46 +00:00
Chris Lattner
d7d7bc70fd Fix for PR341 
llvm-svn: 14842
 2004-07-15 02:26:49 +00:00
Chris Lattner
c4888ccda7 Patches towards fixing PR341 
llvm-svn: 14841
 2004-07-15 02:14:30 +00:00
Chris Lattner
2db1894038 Progress on PR341 
llvm-svn: 14840
 2004-07-15 02:06:12 +00:00
Chris Lattner
0f61d55197 Fixes working towards PR341 
llvm-svn: 14839
 2004-07-15 01:50:47 +00:00
Chris Lattner
ffd5effa5f Bug fixes for PR341 
llvm-svn: 14838
 2004-07-15 01:29:12 +00:00
Chris Lattner
d1b726d18f Implement folding of expressions like 'uint cast (int* getelementptr (int* 
null, uint 1) to uint)' to a constant integer.  We can only do this with
primitive LLVM types, because other types have target-specific sizes.

llvm-svn: 14837
 2004-07-15 01:16:59 +00:00
Chris Lattner
de4449ef34 Now that we codegen the portable "sizeof" efficiently, we can use it for 
malloc lowering.  This means that lowerallocations doesn't need targetdata
anymore.  yaay.

llvm-svn: 14835
 2004-07-15 01:08:08 +00:00
Chris Lattner
210ffe4b77 Improve codegen for the LLVM offsetof/sizeof "operator". Before we compiled 
this LLVM function:

int %foo() {
        ret int cast (int** getelementptr (int** null, int 1) to int)
}

into:

foo:
        mov %EAX, 0
        lea %EAX, DWORD PTR [%EAX + 4]
        ret

now we compile it into:

foo:
        mov %EAX, 4
        ret

This sequence is frequently generated by the MSIL front-end, and soon the malloc lowering pass and
Java front-ends as well..

-Chris

llvm-svn: 14834
 2004-07-15 00:58:53 +00:00
Chris Lattner
7397a61a7f This is logically part of the last patch. Just more really horrible code 
that is made unnecessary by it.

llvm-svn: 14831
 2004-07-14 23:07:13 +00:00
Chris Lattner
d81b8323ee ** Finally DeclareNewGlobalValue is dead! 
* Simplify a lot of code because type's cannot be in function symbol tables
* Fix memory leaks in handling of redefined function prototypes
* Don't use SymbolTable directly for stuff that we can go through the Module
  for.
* Fix some minor bugs on obscure testcases like:
      test/Feature/globalredefinition.ll
* Do not create GlobalVariable objects for forward referenced Functions!
* When forward referencing a function in a constant expression, do not create
  a placeholder, add a bunch of references to it, then turn around and
  replaceAllUsesOfWith on it with a new global, deleting the placeholder.
  Instead, when we find the real definition of the global, just use the
  placeholder instead of creating a new object.

This substantially simplifies the asmwriter and should even speed it up on
cases heavy in constantexprs (like C++, Java, MSIL)...

llvm-svn: 14830
 2004-07-14 23:03:46 +00:00
Chris Lattner
7bef7be4c4 * Fairly substantial change. Instead of creating new globalvariables, then 
replaceAllUsesWith'ing any forward references, just use the forward
  reference if it exists.

This introduces GetForwardRefForGlobal, which will eventually completely
replace the horrible DeclareNewGlobalValue function.

llvm-svn: 14828
 2004-07-14 21:44:00 +00:00
Chris Lattner
5b80b7157a Fold setValueNameMergingDuplicates into ParseGlobalVariable, allowing us 
to substantially simplify the result.  In particular, we no longer create
GlobalVariables and then immediately destroy them when they are duplciate
definitions.

The real point of this patch though is that it gets us closer to the
DeclareNewGlobalValue calls...

llvm-svn: 14827
 2004-07-14 20:42:57 +00:00
Brian Gaeke
d8746a7ab6 Actually set the endian/pointersize flags on the module being read in! 
llvm-svn: 14826
 2004-07-14 20:33:13 +00:00
Chris Lattner
fb6e1c2007 Simplify logic. 
llvm-svn: 14825
 2004-07-14 20:27:12 +00:00
Chris Lattner
7044b0d4e1 Fix a regression from last night. Apparently the CFE is broken and outputs 
functions multiple times, expecting them to be merged.  This should be fixed
in the CFE, then here.

llvm-svn: 14823
 2004-07-14 19:33:47 +00:00
Misha Brukman
d6a9646f29 Make sure MTSPR instruction is inserted into the BasicBlock 
llvm-svn: 14822
 2004-07-14 18:26:31 +00:00
Chris Lattner
74bd192fba Implement new helper methods for creating two-index GEP instructions 
llvm-svn: 14821
 2004-07-14 18:14:33 +00:00
Misha Brukman
0f42826f30 Don't define the same register twice when loading a ConstantPointerRef to a reg 
llvm-svn: 14819
 2004-07-14 17:57:04 +00:00
Misha Brukman
73d729838f * Fix multiplication by powers of two and otherwise 
* Clarify variable name (StoreInst SI instead of LI)

llvm-svn: 14818
 2004-07-14 15:29:51 +00:00
Chris Lattner
6472a6b770 Pull out code shared between GV forward-decl and definition processing. 
This gives us only a single call site for setValueNameMergingDuplicates.
The next stage is the start merging them together.

llvm-svn: 14811
 2004-07-14 08:23:52 +00:00
Chris Lattner
9827ad9f08 Simplify code. Do not allow functions to be redefined more than once. 
Since the stupid '%X = const int 4' thing is gone, we can now simplify
setValueNameMergingDuplicates a bit more.

llvm-svn: 14810
 2004-07-14 07:12:48 +00:00
Chris Lattner
fafef8ecd1 Remove a gross and crufty "feature" that was never documented and doesn't work. 
llvm-svn: 14809
 2004-07-14 06:44:56 +00:00
Chris Lattner
633e78c5c6 Finegrainify namespacification 
llvm-svn: 14808
 2004-07-14 06:39:48 +00:00