Chris Lattner [Thu, 9 Oct 2003 20:41:16 +0000 (20:41 +0000)]
Change getConstantValue to throw an exception on error, not return null
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8988
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Chris Lattner [Thu, 9 Oct 2003 20:35:15 +0000 (20:35 +0000)]
Make getContainedType more efficient by not returning null if out of range!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8987
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Chris Lattner [Thu, 9 Oct 2003 20:31:18 +0000 (20:31 +0000)]
Do not read past the end of the contained type list
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8986
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Chris Lattner [Thu, 9 Oct 2003 20:30:04 +0000 (20:30 +0000)]
Remove potentially N^2 algorithm from symbol table reader. No speedup
in practice though
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8985
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Chris Lattner [Thu, 9 Oct 2003 20:22:47 +0000 (20:22 +0000)]
Major refactoring of the bytecode reader. This includes the following
changes:
* BytecodeReader::getType(...) used to return a null pointer
on error. This was only checked about half the time. Now we convert
it to throw an exception, and delete the half that checked for error.
This was checked in before, but psmith crashed and lost the change :(
* insertValue no longer returns -1 on error, so callers don't need to
check for it.
* Substantial rewrite of InstructionReader.cpp, to use more efficient,
simpler, data structures. This provides another 5% speedup. This also
makes the code much easier to read and understand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8984
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Chris Lattner [Thu, 9 Oct 2003 18:25:19 +0000 (18:25 +0000)]
Significantly clean up parsing of instructions. This exceptionizes and
simplifies the control flow a bit. This provides a small (~3%) speedup,
but it's primarily a cleanup exercise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8983
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Chris Lattner [Thu, 9 Oct 2003 16:10:15 +0000 (16:10 +0000)]
Include the new docs directory, whenever it gets added. www is gone
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8982
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John Criswell [Thu, 9 Oct 2003 15:44:28 +0000 (15:44 +0000)]
Added 177.mesa to the list of Makefiles to propogate to the object root.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8981
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Chris Lattner [Thu, 9 Oct 2003 06:14:26 +0000 (06:14 +0000)]
Eliminate the instruction placeholder. Simplify a bunch of code.
This results in no significant speedup, but does provide simpler code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8980
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Chris Lattner [Thu, 9 Oct 2003 06:05:40 +0000 (06:05 +0000)]
Eliminate the old LateResolveValues data structure, replacing it with a
new, simpler, ForwardReferences data structure. This is just the first
simple replacement, subsequent changes will improve the code more.
This simple change improves the performance of loading a file from HDF5
(contributed by Bill) from 2.36s to 1.93s, a 22% improvement. This
presumably has to do with the fact that we only create ONE placeholder for
a particular forward referenced values, and also may be because the data
structure is much simpler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8979
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Chris Lattner [Thu, 9 Oct 2003 05:25:34 +0000 (05:25 +0000)]
Remove a dead method
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8978
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Chris Lattner [Wed, 8 Oct 2003 22:52:54 +0000 (22:52 +0000)]
This patch substantially simplifies and cleans up handling of basic blocks
in the bytecode parser. Before we tried to shoehorn basic blocks into the
"getValue" code path with other types of values. For a variety of reasons
this was a bad idea, so this patch separates it out into its own data structure.
This simplifies the code, makes it fit in 80 columns, and is also much faster.
In a testcase provided by Bill, which has lots of PHI nodes, this patch speeds
up bytecode parsing from taking 6.9s to taking 2.32s. More speedups to
follow later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8977
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Chris Lattner [Wed, 8 Oct 2003 21:51:46 +0000 (21:51 +0000)]
Inline the postResolveValues method. It was poorly named anyway
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8976
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Brian Gaeke [Wed, 8 Oct 2003 21:48:26 +0000 (21:48 +0000)]
test/Programs/NoSource and www are gone from the tree; don't try to configure
their Makefiles.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8975
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Brian Gaeke [Wed, 8 Oct 2003 21:45:58 +0000 (21:45 +0000)]
Use 3-arg form of AC_DEFINE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8974
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Brian Gaeke [Wed, 8 Oct 2003 21:44:07 +0000 (21:44 +0000)]
Use 3-arg form of AC_DEFINE.
Check for strsignal(), which isn't found everywhere, and sys_siglist,
which can be used to implement it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8973
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Brian Gaeke [Wed, 8 Oct 2003 21:38:35 +0000 (21:38 +0000)]
I really meant to use that AUTOHEADER variable I put in there.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8972
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Chris Lattner [Wed, 8 Oct 2003 21:18:57 +0000 (21:18 +0000)]
Various cleanups and simplifications. This speeds up reading a bytecode file
Bill gave me from 8.69s to 6.90s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8971
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Misha Brukman [Wed, 8 Oct 2003 19:55:47 +0000 (19:55 +0000)]
Destroy allocated resources on exception.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8969
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Brian Gaeke [Wed, 8 Oct 2003 19:09:30 +0000 (19:09 +0000)]
Make more error messages have gccld's name in them.
Add a newline after "Cannot find <library>".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8968
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Chris Lattner [Wed, 8 Oct 2003 18:28:10 +0000 (18:28 +0000)]
old testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8967
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Chris Lattner [Wed, 8 Oct 2003 18:26:10 +0000 (18:26 +0000)]
Checkin an old bug, which appears to be fixed
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8966
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Chris Lattner [Wed, 8 Oct 2003 16:56:11 +0000 (16:56 +0000)]
Update comment
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8965
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Chris Lattner [Wed, 8 Oct 2003 16:55:34 +0000 (16:55 +0000)]
Use a set to keep track of which edges have been noticed as executable already
to avoid reprocessing PHI nodes needlessly. This speeds up the big bad PHI
testcase 43%: from 104.9826 to 73.5157s
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8964
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Chris Lattner [Wed, 8 Oct 2003 16:21:03 +0000 (16:21 +0000)]
Minor fixes here and there
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8963
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Chris Lattner [Wed, 8 Oct 2003 15:47:41 +0000 (15:47 +0000)]
Avoid building data structures we don't really need. This improves the runtime
of a test that Bill Wendling sent me from 228.5s to 105s. Obviously there is
more improvement to be had, but this is a nice speedup which should be "felt"
by many programs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8962
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Chris Lattner [Wed, 8 Oct 2003 06:01:38 +0000 (06:01 +0000)]
Convert over to short bug URLs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8961
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Alkis Evlogimenos [Wed, 8 Oct 2003 05:20:08 +0000 (05:20 +0000)]
Change MRegisterDesc::AliasSet, TargetInstrDescriptor::ImplicitDefs
and TargetInstrDescriptor::ImplicitUses to always point to a null
terminated array and never be null. So there is no need to check for
pointer validity when iterating over those sets. Code that looked
like:
if (const unsigned* AS = TID.ImplicitDefs) {
for (int i = 0; AS[i]; ++i) {
// use AS[i]
}
}
was changed to:
for (const unsigned* AS = TID.ImplicitDefs; *AS; ++AS) {
// use *AS
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8960
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Alkis Evlogimenos [Wed, 8 Oct 2003 05:09:52 +0000 (05:09 +0000)]
Properly close anchor tags in column descriptions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8959
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Alkis Evlogimenos [Wed, 8 Oct 2003 04:45:45 +0000 (04:45 +0000)]
Forward declare class Type since it is used in this class and Type.h is not included
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8958
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Brian Gaeke [Tue, 7 Oct 2003 23:44:10 +0000 (23:44 +0000)]
Add rule for regenerating config.h.in using autoheader.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8957
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Brian Gaeke [Tue, 7 Oct 2003 23:39:51 +0000 (23:39 +0000)]
Regenerated with (at top-level llvm directory):
% autoheader -I autoconf autoconf/configure.ac
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8956
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Chris Lattner [Tue, 7 Oct 2003 22:58:41 +0000 (22:58 +0000)]
whoops, don't accidentally lose variable names
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8955
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Chris Lattner [Tue, 7 Oct 2003 22:54:13 +0000 (22:54 +0000)]
Fix bug: InstCombine/cast.ll:test11 / PR#7
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8954
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Chris Lattner [Tue, 7 Oct 2003 22:53:46 +0000 (22:53 +0000)]
new testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8953
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Chris Lattner [Tue, 7 Oct 2003 22:32:43 +0000 (22:32 +0000)]
Refactor code a bit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8952
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Chris Lattner [Tue, 7 Oct 2003 22:19:19 +0000 (22:19 +0000)]
Add a sanity check for constant expression casts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8951
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Chris Lattner [Tue, 7 Oct 2003 22:14:37 +0000 (22:14 +0000)]
Add links to bugzilla
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8950
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John Criswell [Tue, 7 Oct 2003 21:57:39 +0000 (21:57 +0000)]
Renamed -use-spec to -use-spec2000.
The pathname to SPEC2000 is now given with the -use-spec2000 option.
On our machines, SPEC2000 will be enabled by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8949
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Chris Lattner [Tue, 7 Oct 2003 21:38:31 +0000 (21:38 +0000)]
Cleanups, include a list of passes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8948
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Brian Gaeke [Tue, 7 Oct 2003 21:33:27 +0000 (21:33 +0000)]
Fix bugs in mmap()-of-files test program on Mac OS X:
1) MAP_FAILED is declared to be a pointer
2) can't include sys/mman.h before sys/types.h without getting an error :-(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8947
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John Criswell [Tue, 7 Oct 2003 21:30:07 +0000 (21:30 +0000)]
Fixed the location of the expectations file.
Added the registration of the LLVM Database class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8946
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John Criswell [Tue, 7 Oct 2003 21:13:47 +0000 (21:13 +0000)]
Switching over to the new test database.
Adding new qmt files should no longer be necessary.
QMTest should know just "magically" know what sort of test each file is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8945
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Chris Lattner [Tue, 7 Oct 2003 20:50:29 +0000 (20:50 +0000)]
Add more credits
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8944
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Chris Lattner [Tue, 7 Oct 2003 20:36:00 +0000 (20:36 +0000)]
cleanup analyze documents
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8943
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Chris Lattner [Tue, 7 Oct 2003 20:35:55 +0000 (20:35 +0000)]
Ensure both columns take 50%
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8942
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Chris Lattner [Tue, 7 Oct 2003 20:33:52 +0000 (20:33 +0000)]
no this really isn't extract
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8941
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Chris Lattner [Tue, 7 Oct 2003 20:33:30 +0000 (20:33 +0000)]
initial checkin of the bugpoint doxs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8940
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Chris Lattner [Tue, 7 Oct 2003 20:17:24 +0000 (20:17 +0000)]
TTify, add links between pages
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8939
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Chris Lattner [Tue, 7 Oct 2003 20:12:05 +0000 (20:12 +0000)]
Consistently set the background color
Change the footer to include "maintained by"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8938
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Chris Lattner [Tue, 7 Oct 2003 20:09:21 +0000 (20:09 +0000)]
<tt>ify things
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8937
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Chris Lattner [Tue, 7 Oct 2003 20:05:23 +0000 (20:05 +0000)]
Make the index page a big more attractive
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8936
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Chris Lattner [Tue, 7 Oct 2003 20:01:09 +0000 (20:01 +0000)]
More changes and updates
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8935
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Chris Lattner [Tue, 7 Oct 2003 19:51:55 +0000 (19:51 +0000)]
<tt>ify, other minor cleanups
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8934
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Chris Lattner [Tue, 7 Oct 2003 19:48:25 +0000 (19:48 +0000)]
<tt> stuff
simplify a bit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8933
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Chris Lattner [Tue, 7 Oct 2003 19:46:37 +0000 (19:46 +0000)]
Add pointer to LLC for code generator options. <tt> a bunch of stuff which should be
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8932
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Chris Lattner [Tue, 7 Oct 2003 19:42:50 +0000 (19:42 +0000)]
separate options into X86 and sparc specific options
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8931
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Chris Lattner [Tue, 7 Oct 2003 19:33:31 +0000 (19:33 +0000)]
Fix bugzilla bug #5
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8930
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John Criswell [Tue, 7 Oct 2003 19:07:00 +0000 (19:07 +0000)]
These scripts are no longer needed. They have been replaced by QMTest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8929
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Chris Lattner [Tue, 7 Oct 2003 18:46:23 +0000 (18:46 +0000)]
Bill contributed this major rewrite of the -lowerswitch pass to make it generate
logarithmic conditional branch sequences instead of linear sequences. Thanks Bill!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8928
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Brian Gaeke [Tue, 7 Oct 2003 17:12:11 +0000 (17:12 +0000)]
Add target to regenerate top-level "configure" script.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8927
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Chris Lattner [Tue, 7 Oct 2003 16:36:25 +0000 (16:36 +0000)]
Wrap at 80 columns
remove -time-passes and -stats, because llvm-link doesn't really need them
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8926
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Chris Lattner [Tue, 7 Oct 2003 16:34:51 +0000 (16:34 +0000)]
Renamed llvmas.html llvmdis.html and llvmlink.html to have hyphens in them
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8925
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Chris Lattner [Tue, 7 Oct 2003 16:33:42 +0000 (16:33 +0000)]
remove options specific to the -internalize pass, add the -debug option
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8924
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Misha Brukman [Tue, 7 Oct 2003 15:24:23 +0000 (15:24 +0000)]
Depend on config.status instead of config.h, because config.h timestamp may not
change even though configure changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8923
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Chris Lattner [Tue, 7 Oct 2003 15:17:02 +0000 (15:17 +0000)]
Fix bug in previous checkin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8922
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John Criswell [Tue, 7 Oct 2003 14:16:44 +0000 (14:16 +0000)]
Added targets that force users to re-run autoconf when the script has been
updated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8921
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Chris Lattner [Tue, 7 Oct 2003 13:45:51 +0000 (13:45 +0000)]
This header file moved. Thanks to Bill and Nightly tester for noticing
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8920
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Brian Gaeke [Tue, 7 Oct 2003 06:01:34 +0000 (06:01 +0000)]
regenerated using autoconf-2.57.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8917
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Brian Gaeke [Tue, 7 Oct 2003 05:03:36 +0000 (05:03 +0000)]
Don't abort if dlopen cannot be found; it's not like it's going to break
everything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8916
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Brian Gaeke [Tue, 7 Oct 2003 03:56:29 +0000 (03:56 +0000)]
Check for functions: strtoq, strtoll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8915
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Chris Lattner [Tue, 7 Oct 2003 02:57:51 +0000 (02:57 +0000)]
new testcase, distilled by Brian
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8914
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Misha Brukman [Mon, 6 Oct 2003 19:26:00 +0000 (19:26 +0000)]
Break lines so that they fit within 80 columns.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8901
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Misha Brukman [Mon, 6 Oct 2003 19:23:34 +0000 (19:23 +0000)]
* Alphabetized order of tools
* Added blurb about `bugpoint'
* Fixed some grammar issues
* Added blurb about `llvm-link'
* Took out the part about the `lli debugger' which disappeared
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8900
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Chris Lattner [Mon, 6 Oct 2003 19:07:41 +0000 (19:07 +0000)]
Actually _PASS IN_ NO_RESERVE if we have it.
Thanks to Brian for fixing this obvious oops
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8899
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Misha Brukman [Mon, 6 Oct 2003 18:37:24 +0000 (18:37 +0000)]
ToolRunner.h has been moved from include/Support to include/llvm/Support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8898
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Misha Brukman [Mon, 6 Oct 2003 18:34:38 +0000 (18:34 +0000)]
Moved to llvm/include/llvm/Support because it is LLVM-specific.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8897
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Chris Lattner [Mon, 6 Oct 2003 17:36:49 +0000 (17:36 +0000)]
Remove unneeded dtors
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8896
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Chris Lattner [Mon, 6 Oct 2003 17:33:39 +0000 (17:33 +0000)]
Users can never be null
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8895
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Chris Lattner [Mon, 6 Oct 2003 17:11:01 +0000 (17:11 +0000)]
Minor speedups for the instcombine pass
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8894
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Chris Lattner [Mon, 6 Oct 2003 15:52:43 +0000 (15:52 +0000)]
Speed up the predicate used to decide when to inline by caching the size
of callees between executions.
On eon, in release mode, this changes the inliner from taking 11.5712s
to taking 2.2066s. In debug mode, it went from taking 14.4148s to
taking 7.0745s. In release mode, this is a 24.7% speedup of gccas, in
debug mode, it's a total speedup of 11.7%.
This also makes it slightly more aggressive. This could be because we
are not judging the size of the functions quite as accurately as before.
When we start looking at the performance of the generated code, this can
be investigated further.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8893
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Brian Gaeke [Mon, 6 Oct 2003 15:41:21 +0000 (15:41 +0000)]
Add # of printed instructions statistic to both the SPARC and X86 LLC backends.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8892
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Brian Gaeke [Mon, 6 Oct 2003 15:30:00 +0000 (15:30 +0000)]
I wanted to make the top of the page less verbose. Hope this helps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8891
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Chris Lattner [Mon, 6 Oct 2003 15:23:43 +0000 (15:23 +0000)]
Avoid doing pointless work. Amazingly, this makes us go faster.
Running the inliner on 252.eon used to take 48.4763s, now it takes 14.4148s.
In release mode, it went from taking 25.8741s to taking 11.5712s.
This also fixes a FIXME.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8890
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Chris Lattner [Mon, 6 Oct 2003 15:02:31 +0000 (15:02 +0000)]
Implement the NamedRegionTimer class
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8889
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Chris Lattner [Mon, 6 Oct 2003 15:02:16 +0000 (15:02 +0000)]
Doxygenize class comments. Add new NamedRegionTimer class
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8888
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Brian Gaeke [Mon, 6 Oct 2003 03:30:28 +0000 (03:30 +0000)]
All of our supported operating systems (so far) and FreeBSD technically
want you to include <sys/stat.h> for fstat(), struct stat, and friends.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8887
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Chris Lattner [Mon, 6 Oct 2003 02:13:00 +0000 (02:13 +0000)]
Hand update the configure script for moved directories
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8886
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Chris Lattner [Mon, 6 Oct 2003 02:09:25 +0000 (02:09 +0000)]
Changes for the move of the support directory back into utils
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8885
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Chris Lattner [Sun, 5 Oct 2003 22:19:20 +0000 (22:19 +0000)]
This changes the PromoteMemToReg function to create "pruned" SSA form, not
"minimal" SSA form (in other words, it doesn't insert dead PHIs). This
speeds up the mem2reg pass very significantly because it doesn't have to
do a lot of frivolous work in many common cases.
In the 252.eon function I have been playing with, this doesn't even insert
the 120 PHI nodes that it used to which were trivially dead (in the process
of promoting 356 alloca instructions overall). This speeds up the mem2reg
pass from 1.2459s to 0.1284s. More significantly, the DCE pass used to take
2.4138s to remove the 120 dead PHI nodes that mem2reg constructed, now it
takes 0.0134s (which is the time to scan the function and decide that there
is nothing dead). So overall, on this one function, we speed things up a
total of 3.5179s, which is a 24.8x speedup! :)
This change is tested by the Mem2Reg/2003-10-05-DeadPHIInsertion.ll test,
which now passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8884
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Chris Lattner [Sun, 5 Oct 2003 21:20:13 +0000 (21:20 +0000)]
Change the interface to PromoteMemToReg to also take a DominatorTree
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8883
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Chris Lattner [Sun, 5 Oct 2003 21:11:57 +0000 (21:11 +0000)]
new testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8882
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Chris Lattner [Sun, 5 Oct 2003 20:54:03 +0000 (20:54 +0000)]
Speed up the mem2reg transform for allocas which are only read/written in a single
basic block. This is amazingly common in code generated by the C/C++ front-ends.
This change makes it not have to insert ANY phi nodes, whereas before it would insert
a ton of dead ones which DCE would have to clean up.
Thus, this fix improves compile-time performance of these trivial allocas in two ways:
1. It doesn't have to do the walking and book-keeping for renaming
2. It does not insert dead phi nodes for them which would have to
subsequently be cleaned up.
On my favorite testcase from 252.eon, this special case handles 305 out of
356 promoted allocas in the function. It speeds up the mem2reg pass from 7.5256s
to 1.2505s. It inserts 677 fewer dead PHI nodes, which speeds up a subsequent
-dce pass from 18.7524s to 2.4806s.
There are still 120 trivially dead PHI nodes being inserted for variables used
in multiple basic blocks, but they are not handled by this patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8881
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Chris Lattner [Sun, 5 Oct 2003 19:33:27 +0000 (19:33 +0000)]
The support directory no longer exists
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8880
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Chris Lattner [Sun, 5 Oct 2003 19:32:56 +0000 (19:32 +0000)]
Oops, missed the . files
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8879
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Chris Lattner [Sun, 5 Oct 2003 19:32:12 +0000 (19:32 +0000)]
Move support/lib into lib/Support
Move support/tools into utils
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8878
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Chris Lattner [Sun, 5 Oct 2003 19:28:27 +0000 (19:28 +0000)]
Revert back to keeping Burg and TableGen in the utils directory
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8876
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Chris Lattner [Sun, 5 Oct 2003 19:27:59 +0000 (19:27 +0000)]
Move support/tools/* back into utils
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8875
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Chris Lattner [Sun, 5 Oct 2003 19:24:38 +0000 (19:24 +0000)]
Move support/lib/Support back to lib/Support
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8874
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Chris Lattner [Sun, 5 Oct 2003 19:17:10 +0000 (19:17 +0000)]
The sparc backend now support invoke, but still doesn't support unwind
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8873
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