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15059 Commits

Author SHA1 Message Date
Evan Cheng
b5aaee0027 Remove extra spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30025 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 18:45:22 +00:00
Evan Cheng
78050d6cbe Last check-in was a mistake... 
I've been told apple gcc version number is not guaranteed to increase
monotonically. Change the preprocess condition to make it less risky.

The configuration change is done during the middle 10.4 life cycle so we have
to check __APPLE_CC. For future OS X release, we should be able to assume
-fenable-cxa-atexit is the default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30024 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 18:42:59 +00:00
Evan Cheng
4f260b4efa *** empty log message *** 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30023 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 18:40:46 +00:00
Evan Cheng
3f4fd0fd64 Allow legalizer to expand ISD::MUL using only MULHS in the rare case that is 
possible and the target only supports MULHS.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30022 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 18:17:58 +00:00
Jim Laskey
3ebe71db6b Corrections. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30021 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 12:55:05 +00:00
Evan Cheng
fb9c0d7e31 Better comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30017 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 07:09:56 +00:00
Evan Cheng
5f271aff5c Yikes. This requires checking apple gcc version. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30016 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 07:00:46 +00:00
Chris Lattner
8a67f6e848 Pull some code out of a hot recursive function because the common case doesn't 
need recursion.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30015 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 07:00:23 +00:00
Chris Lattner
238416c99b Reserve space in the ValueNumberInfo vector. This speeds up live interval 
analysis 16% on crafty.

Wrap long lines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30012 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 06:10:18 +00:00
Chris Lattner
a2a8f0919d Iterative coallescing doesn't buy us anything (we get identical results on 
crafty with and without it).  Removing it speeds up live intervals 6%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30010 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 04:02:42 +00:00
Nick Lewycky
7218c28822 Don't confuse canonicalize and lookup. Fixes predsimplify.reg4.ll. Also 
corrects missing optimization opportunity removing cases from a switch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30009 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-01 03:26:35 +00:00
Evan Cheng
dfcfacb0cb DAG combiner fix for rotates. Previously the outer-most condition checks 
for ROTL availability. This prevents it from forming ROTR for targets that
has ROTR only.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29997 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-31 07:41:12 +00:00
Chris Lattner
2ebfa0c618 Add a special case that speeds up coallescing a bit, but not enough. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29996 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-31 06:48:26 +00:00
Chris Lattner
bfe180af9e Delete copies as they are coallesced instead of waiting until the end. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29995 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-31 05:58:59 +00:00
Chris Lattner
91725b7585 avoid calling the virtual isMoveInstr method endlessly by caching its results. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29994 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-31 05:54:43 +00:00
Nick Lewycky
6e39c7ed1e Properties where both Values weren't in the union (as being equal to 
another Value) weren't being found by findProperties.

This fixes predsimplify.ll test6, a missed optimization opportunity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29991 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-31 00:39:16 +00:00
Chris Lattner
ba256037ce Fix a compiler crash bootstrapping llvm-gcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29989 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-30 23:02:29 +00:00
Chris Lattner
9b0d6f4ca6 Guess what happens when asserts are disabled. :( 
Also, the assert could never fire due to || instead of &&.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29977 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-30 20:37:06 +00:00
Chris Lattner
52c917190a Instantiate Statistic<> in one place, not in every .o file that uses it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29971 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-30 04:17:00 +00:00
Nick Lewycky
3947a76e21 Move to using the EquivalenceClass ADT. Removes SynSets. 
If a branch's condition has become a ConstantBool, simplify it immediately.
Removing the edge saves work and exposes up more optimization opportunities
in the pass.
Add support for SelectInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29970 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-30 02:46:48 +00:00
Chris Lattner
6d8fbef015 Teach the coallescer to coallesce live intervals joined by an arbitrary 
number of copies, potentially defining live ranges that appear to have
differing value numbers that become identical when coallsced.  Among other
things, this fixes CodeGen/X86/shift-coalesce.ll and PR687.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29968 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 23:18:15 +00:00
Devang Patel
4b8f36f106 Do not rely on std::sort and std::erase to get list of unique 
exit blocks. The output is dependent on addresses of basic block.

Add and use Loop::getUniqueExitBlocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29966 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 22:29:16 +00:00
Evan Cheng
c9676deb23 Minor asm fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29965 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 22:14:48 +00:00
Evan Cheng
4a888584ea Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29962 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 21:42:58 +00:00
Evan Cheng
780413d462 Don't performance load/op/store transformation if op produces a floating point 
or vector result. X86 does not have load/mod/store variants of those
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29957 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 18:37:37 +00:00
Evan Cheng
e50794adda - Enable x86 isel preprocessing by default unless -fast is specified. 
- Also disable isel load folding if -fast.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29956 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 18:28:33 +00:00
Jim Laskey
ce50a165c7 Handle callee saved registers in dwarf frame info (lead up to exception 
handling.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29954 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 16:24:26 +00:00
Jim Laskey
85aaf9088e Tidy up options. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29953 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 15:13:10 +00:00
Evan Cheng
82a35b34fb Avoid making unneeded load/mod/store transformation which can hurt performance. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29952 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 06:44:17 +00:00
Evan Cheng
1efba0ecb4 Move isCommutativeBinOp from SelectionDAG.cpp and DAGCombiner.cpp out. Make it a static method of SelectionDAG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29951 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 06:42:35 +00:00
Owen Anderson
d648e140a5 Clean up a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29950 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 06:10:56 +00:00
Nate Begeman
06abd22b1a Make ppc64 jit kinda work right. About 2/3 of Olden passes with this, 
there are clearly some encoding bugs lurking in there somewhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29949 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-29 02:30:59 +00:00
Nick Lewycky
05450ae128 Add PredicateSimplifier pass. Collapses equal variables into one form 
and simplifies expressions. This implements the optimization described
in PR807.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29947 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 22:44:55 +00:00
Evan Cheng
67afeceaf0 On Mac, print jump table entries after the function to work around a linker issue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29946 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 22:14:16 +00:00
Evan Cheng
70e674e95e Add an optional pass to preprocess the DAG before x86 isel to allow selecting more load/mod/store instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29943 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 20:10:17 +00:00
Owen Anderson
59312b19a6 Make LoopUnroll fold excessive BasicBlocks. This results in a significant speedup of 
gccas on 252.eon


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29936 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 02:09:46 +00:00
Reid Spencer
3a9ec2463d For PR387: 
Close out this long standing bug by removing the remaining overloaded
virtual functions in LLVM. The -Woverloaded-virtual option is now turned on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29934 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 01:02:49 +00:00
Chris Lattner
a5370172b6 simplify AnalysisGroup registration, eliminating one typeid call. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29932 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 00:42:29 +00:00
Chris Lattner
6e60002a73 Silence -Woverloaded-virtual warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29929 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-28 00:09:00 +00:00
Chris Lattner
7f8897f22e eliminate RegisterOpt. It does the same thing as RegisterPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29925 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 22:42:52 +00:00
Chris Lattner
43d64b8526 Fit to 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29922 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 22:31:12 +00:00
Chris Lattner
5d8925c7c5 Eliminate RegisterAnalysis. RegisterPass now does all that is necessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29921 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 22:30:17 +00:00
Chris Lattner
2dd3d423aa We no longer care whether something is an opt vs analysis pass, only whether 
something is a pass vs an analysis group now.  Simplify interfaces.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29920 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 22:21:55 +00:00
Chris Lattner
232885873f Minor code cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29917 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 22:10:29 +00:00
Chris Lattner
a4f0b3a084 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h| 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29911 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 12:54:02 +00:00
Chris Lattner
c9d94d1290 typo fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29910 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 12:47:48 +00:00
Chris Lattner
7422a76100 Add external definitions for commonly-used template specializations and add 
anchor methods to others.  This eliminates the vtable/template method bloat
in .o files that defining a cl::opt used to impose (~4K per .o file for one
cp::opt<unsigned>).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29909 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 12:45:47 +00:00
Evan Cheng
0b828e08f9 Do not use getTargetNode() and SelectNodeTo() which takes more than 3 
SDOperand arguments. Use the variants which take an array and number instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29907 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 08:14:06 +00:00
Evan Cheng
694481ee01 Eliminate SelectNodeTo() and getTargetNode() variants which take more than 
3 SDOperand operands. They are replaced by versions which take an array
of SDOperand and the number of operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29905 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 08:08:54 +00:00
Chris Lattner
16c7fe5ca3 Fix target matching weights, so that ppc-darwin modules are codegen with the 
ppc target, not the itanium target, when run on an itanium machine.
This should fix the CodeGen/PowerPC regtest failures on itanium.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29903 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 21:33:05 +00:00
Nate Begeman
d2030e6c99 Properly size the string table, and emit symbol table and string table 
entries in the correct order, fixing several fixmes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29902 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 15:46:34 +00:00
Evan Cheng
95514bae73 SelectNodeTo now returns a SDNode*. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29901 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 08:00:10 +00:00
Evan Cheng
9ade218533 Select() no longer require Result operand by reference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29898 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 05:34:46 +00:00
Chris Lattner
e7f729b42b Simplifications to liveinterval analysis, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29896 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 01:28:16 +00:00
Evan Cheng
6da2f3268d Match tblgen changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29895 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 01:07:58 +00:00
Evan Cheng
0469990e79 Match tblgen changes; clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29894 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 01:05:16 +00:00
Chris Lattner
8d3e1d6613 Give a good error message when we try to jit inline asm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29891 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-26 00:47:03 +00:00
Chris Lattner
c114b2cad7 Completely change the way that joining with physregs is implemented. This 
paves the way for future changes, increases coallescing opportunities (in
theory, not witnessed in practice), and eliminates the really expensive
LiveIntervals::overlapsAliases method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29890 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 23:41:24 +00:00
Evan Cheng
1822ffbab7 Add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29889 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 23:29:06 +00:00
Jim Laskey
08ede262a7 Tidy up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29888 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 22:56:30 +00:00
Owen Anderson
203572552d Fix a crash related to updating Phi nodes in the original header block. This was 
causing a crash in 175.vpr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29887 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 22:13:55 +00:00
Owen Anderson
eb70591492 Add an assertion to check that we're really preserving LCSSA. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29886 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 22:12:36 +00:00
Evan Cheng
b9ca92661c Encode pc-relative conditional branch offset as pc+(num of bytes / 4). The 
asm printer will print it as offset*4. e.g. bne cr0, $+8.

The PPC code emitter was expecting the offset to be number of instructions, not
number of bytes. This fixes a whole bunch of JIT failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29885 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 21:54:44 +00:00
Reid Spencer
0554575567 For PR797: 
Make the Win32 code exception free (untested/uncompiled) which forced some
interface changes which had ripple effect. This should be the last of 797.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29884 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 21:37:17 +00:00
Reid Spencer
99655e16a6 For PR797: 
Final commit for this bug. This removes the last EH holdouts in LLVM
and turns off exception support by using the -fno-exceptions option. This
leads to the following reduction in library and executable sizes:
                DEBUG BUILD                RELEASE BUILD
         before     after   delta     before   after    delta
lib    162,328K  157,616K   4,712    17,864K  16,416K  1,448K
bin    571,444K  557,156K  14,288    63,296K   56,996K 6,300K

Debug   Improvement: 19,000K (2.59%)
Release Improvement:  7,748K (9.55%)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29882 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 19:54:53 +00:00
Jim Laskey
f3e4f0e615 Consolidate callee saved register information so that it can me used by debug 
information and exception handling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29881 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 19:45:51 +00:00
Jim Laskey
4c2c9031ac Fix some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29880 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 19:40:59 +00:00
Jim Laskey
3d3d404b8a Allow for register numbers > 31. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29879 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 19:39:52 +00:00
Rafael Espindola
755be9b3de use @ for comments 
store LR in an arbitrary stack slot
add support for writing varargs functions


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29876 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 17:55:16 +00:00
Reid Spencer
0b5a504d10 For PR797: 
Remove exception throwing/handling from lib/Bytecode, and adjust its users
to compensate for changes in the interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29875 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 17:43:11 +00:00
Owen Anderson
ac12322710 Reapply the indvars patch, since nothing blew up last night. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29874 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 17:41:25 +00:00
Nate Begeman
f8f2c5a172 Get closer to handling globals correctly. We now generally get them in the 
right section.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29871 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 06:36:58 +00:00
Owen Anderson
b397d81f03 Revert my previous patch. Since there are some major changes that went in today, 
I'm going to wait to put this in HEAD until tomorrow, so as not to clutter the nightly
tester.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29868 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 03:45:57 +00:00
Owen Anderson
8a24749cb8 Specify that indvars actually preserve LCSSA. This has been done for a while, but I 
forgot to put in the analysis usage.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29867 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 03:32:13 +00:00
Reid Spencer
0ff2d31766 For PR797: 
Remove exception handling from the bytecode archiver and adjust the llvm-ar
tool to accommodate the new interfaces.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29866 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 23:45:08 +00:00
Chris Lattner
c82b3aab65 When replacing value numbers, make sure to compactify the value # space. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29865 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 23:22:59 +00:00
Chris Lattner
bf16982e86 We compile this into: 
_swap_16:
        slwi r2, r3, 24
        rlwimi r2, r3, 8, 8, 15
        srwi r3, r2, 16
        blr

now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29864 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 23:06:02 +00:00
Chris Lattner
ad69970c4a Owen implemented this. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29863 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 23:03:33 +00:00
Chris Lattner
f7da2c7b0c Take advantage of the recent improvements to the liveintervals set (tracking 
instructions which define each value#) to simplify and improve the coallescer.
In particular, this patch:

1. Implements iterative coallescing.
2. Reverts an unsafe hack from handlePhysRegDef, superceeding it with a
   better solution.
3. Implements PR865, "coallescing" away the second copy in code like:

   A = B
   ...
   B = A

This also includes changes to symbolically print registers in intervals
when possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29862 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 22:43:55 +00:00
Reid Spencer
7b7a1be856 Remove a character to avoid line exceeding 80 cols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29860 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 22:39:25 +00:00
Owen Anderson
3b53c4ee91 Implement unrolling of multiblock loops. This significantly improves the 
utility of the LoopUnroll pass.

Also, add a testcase for multiblock-loop unrolling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29859 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 21:28:19 +00:00
Reid Spencer
30300996b3 For PR797: 
Adjust implementation to match the new interface after exception handling
was removed in the Unix verison. NOTE: this hasn't been compiled yet!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29858 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 18:58:37 +00:00
Rafael Espindola
cdda88cd12 add the "eq" condition code 
implement a movcond instruction


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29857 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 17:19:08 +00:00
Rafael Espindola
6f602de3b6 create a generic bcond instruction that has a conditional code argument 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29856 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 16:13:15 +00:00
Rafael Espindola
687bc49d1a initial support for branches 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29854 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-24 13:45:55 +00:00
Nate Begeman
eb883af390 Initial checkin of the Mach-O emitter. There's plenty of fixmes, but it 
does emit linkable .o files in very simple cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29850 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 21:08:52 +00:00
Reid Spencer
81bc5088dd For PR797: 
This library no longer throws nor handles exceptions, so turn off the
REQUIRES_EH flag.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29849 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 20:39:25 +00:00
Reid Spencer
30493372f3 For PR797: 
Final remove of exception handling from this file. lib/System can no longer
throw exceptions so there's no need for try/catch blocks here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29848 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 20:37:59 +00:00
Reid Spencer
4c97bed5d9 Turn off exception handling for this library. It no longer throws nor 
handles exceptions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29847 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 20:35:51 +00:00
Reid Spencer
51c5a286ba For PR797: 
Final removal of exceptions from lib/System and adjustment of users to
accommodate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29846 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 20:34:57 +00:00
Reid Spencer
5a060775da For PR797: 
Eliminate exception throwing from Path::renamePathOnDisk and adjust its
users correspondingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29843 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 07:30:48 +00:00
Reid Spencer
6f4c60770c Make the ProgramName variable a std::string so we can eliminate the path 
portion fo the program name via sys::Path().getLast(). This makes error
messages more readable since this is invariably used only in error
messages.  Instead of:
  /path/to/llvm/bin/directory/toolname: error message
we will now get:
  toolname: error message
Also, since we always have a program name (even if its defaulted), don't
check to see if it is set or not when generating error messages. This
eliminates a bunch of constant strings, saving a little under 1K of data.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29842 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 07:10:06 +00:00
Reid Spencer
142ca8e818 For PR797: 
Remove exception throwing from Path::getDirectoryContents and its users.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29841 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 06:56:27 +00:00
Reid Spencer
e5c9cb5eb6 For PR797: 
Remove exceptions from the Path::create*OnDisk methods. Update their users
to handle error messages via arguments and result codes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29840 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-23 00:39:35 +00:00
Reid Spencer
a34a15765d For PR797: 
Adjust code to compensate for Path class interface change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29837 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-22 23:54:35 +00:00
Reid Spencer
e1647f4698 For PR797: 
Change the Path::make*OnDisk methods exception free and adjust their usage.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29836 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-22 23:27:23 +00:00
Reid Spencer
cab0e43829 Update for changes in Path class interface for exception removal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29834 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-22 22:46:39 +00:00
Reid Spencer
487447626c Make the sys::Path::GetTemporaryDirectory method not throw exceptions and 
adjust users of it to compensate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29831 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-22 19:01:30 +00:00
Chris Lattner
be4f88a8b8 Improve the LiveInterval class to keep track of which machine instruction 
defines each value# tracked by the interval.  This will be used to improve
coallescing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29830 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-22 18:19:46 +00:00
Reid Spencer
1cb6057bf3 Fix another occurrence of inverted logic on the result of MappedFile::map 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29828 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-22 18:03:02 +00:00