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Author SHA1 Message Date
Jakob Stoklund Olesen
6b705d4825 Add a hidden command line option to display edge bundle graphs as they are 
calculated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122912 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 21:50:24 +00:00
Jakob Stoklund Olesen
7008f1e9ab Silence a warning from non-standard warning avoidance code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122911 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 21:50:21 +00:00
Eric Christopher
762a17a040 80-cols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122909 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 21:45:56 +00:00
Owen Anderson
be41901d5a When computing the value on an edge, in certain cases LVI would fail to compute the value range 
in the predecessor block, leading to an incorrect conclusion for the edge value.  Found by inspection.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122908 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 21:37:18 +00:00
Bob Wilson
bfb7dd9e9e Revert svn 122743, removing the instcombine pass that was replaced by earlycse. 
My i386 llvm-gcc nightly tester found a regression for
SingleSource/Benchmarks/McGill/chomp that a bisect blamed on 122743.
That seems strange but apparently the combination of earlycse and instcombine
did something bad.  Chris says he intended to remove the instcombine pass, so
let's go ahead and try that.  We'll see if there are any performance losses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122907 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 21:16:50 +00:00
Owen Anderson
89778462c0 Re-convert several of LazyValueInfo's internal maps to Dense{Map|Set}, and fix the issue in 
hasBlockValue() that was causing iterator invalidations.  Many thanks to Dimitry Andric for
tracking down those invalidations!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122906 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 21:15:29 +00:00
Chris Lattner
54c6d6f42d fix some -Wself-assign warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122893 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 18:41:05 +00:00
Cameron Zwarich
073057f0d0 Add some more statistics to CodeGenPrepare. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122891 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 17:47:38 +00:00
Wesley Peck
3d2148f5ac Commit 122778 broke DWARF debug output when using the MBlaze backend. Fixed by overriding TargetFrameInfo::getFrameIndexOffset to take into account the new frame index information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122889 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 17:34:20 +00:00
Cameron Zwarich
31ff1333e0 Add some stats to CodeGenPrepare to make it easier to speed it up without 
regressing code quality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122887 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 17:27:27 +00:00
Wesley Peck
4351bfbd4d Fix small bug in setDebugInfoAvailability. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122886 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 17:01:57 +00:00
Michael J. Spencer
f94f7325ad UnitTests/Path: Fix typo, add error number, and enable the directory cleanup code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122885 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 16:39:46 +00:00
Michael J. Spencer
7fd682aaf2 Support/PathV2: Implement remove_all. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122884 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 16:39:38 +00:00
Michael J. Spencer
277fa1047b Support/Windows/PathV2: Make directory iteration ignore . and .. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122883 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 16:39:30 +00:00
Michael J. Spencer
abce07328c Support/Windows/PathV2: Fix remove to handle both files and directories. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122882 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 16:39:22 +00:00
Michael J. Spencer
5bcdc7f7c4 Support/PathV2: Implement directory_entry::status. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122881 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 16:39:13 +00:00
Michael J. Spencer
2558516859 UnitTests/PathV2: Setup a test fixture to make tracking created file system 
entities easier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122880 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 16:39:05 +00:00
Michael J. Spencer
da7c1cab8c Support/PathV2: Implement directory iteration on POSIX. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122879 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 16:38:57 +00:00
Cameron Zwarich
1901925b78 Use pop_back_val instead of back followed by pop_back. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122876 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 16:08:47 +00:00
Frits van Bommel
c95ff3c422 Fix lit for people whose LLVM path contains 'opt', which is a common directory name on Unix-like systems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122873 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 15:10:24 +00:00
Cameron Zwarich
08602ab1b4 Use a worklist for later iterations just like ordinary instsimplify. The next 
step is to only process instructions in subloops if they have been modified by
an earlier simplification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122869 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 05:47:47 +00:00
Cameron Zwarich
e389ab16f3 Change LoopInstSimplify back to a LoopPass. It revisits subloops rather than 
skipping them, but it should probably use a worklist and only revisit those
instructions in subloops that have actually changed. It should probably also
use a worklist after the first iteration like instsimplify now does. Regardless,
it's only 0.3% of opt -O2 time on 403.gcc if it replaces the instcombine placed
in the middle of the loop passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122868 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 05:15:53 +00:00
Chris Lattner
be478819cb Fix PR8906: -fno-builtin should disable loop-idiom recognition. 
It forms memset and memcpy's, and will someday form popcount and
other stuff.  All of this is bad when compiling the implementation
of memset, memcpy, popcount, etc.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122854 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 01:03:32 +00:00
Eric Christopher
2d31d14bac Remove TODO, these appear to be implemented. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122849 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 22:31:50 +00:00
Owen Anderson
2cf7537dc6 Don't bother value numbering instructions with void types in GVN. In theory this should allow us to insert 
fewer things into the value numbering maps, but any speedup is beneath the noise threshold on my machine
on 403.gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122844 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 22:15:21 +00:00
Jakob Stoklund Olesen
631ee4b89f Use the EdgeBundles analysis in X86FloatingPoint instead of recomputing CFG 
bundles in the pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122833 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 21:10:11 +00:00
Jakob Stoklund Olesen
8dd070edc2 Turn the EdgeBundles class into a stand-alone machine CFG analysis pass. 
The analysis will be needed by both the greedy register allocator and the
X86FloatingPoint pass. It only needs to be computed once when the CFG doesn't
change.

This pass is very fast, usually showing up as 0.0% wall time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122832 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 21:10:05 +00:00
Dale Johannesen
1e08cd1eae Eliminate a warning compiling with llvm-gcc. (IMO the 
warning is overzealous but gcc is what it is.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122829 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:31:24 +00:00
Owen Anderson
b1602abe63 Complete the NumberTable --> LeaderTable rename. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122828 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:29:46 +00:00
Owen Anderson
a0709acd6f Fix typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122827 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:25:18 +00:00
Owen Anderson
465942d008 Prune #include's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122826 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:24:57 +00:00
Owen Anderson
7a75d6108e Clarify terminology, settling on referring to what was the "number table" as the "leader table", and 
rename methods to make it much more clear what they're doing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122823 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:13:25 +00:00
Owen Anderson
680ac4ff4e When removing a value from GVN's leaders list, don't drop the Next pointer in a corner case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122822 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:10:54 +00:00
Dale Johannesen
c84e3c0c03 Improve the accuracy of the inlining heuristic looking for the 
case where a static caller is itself inlined everywhere else, and
thus may go away if it doesn't get too big due to inlining other
things into it.  If there are references to the caller other than
calls, it will not be removed; account for this.
This results in same-day completion of the case in PR8853.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122821 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:01:54 +00:00
Owen Anderson
c2146a6abc Branch instructions don't produce values, so there's no need to generate a value number for them. This 
avoids adding them to the various value numbering tables, resulting in a minor (~3%) speedup for GVN
on 40.gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122819 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 18:54:18 +00:00
Owen Anderson
2802c7536f Remove commented out code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122817 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 18:22:08 +00:00
Owen Anderson
19af2ed415 Give MachineFunctionAnalysis a getPassName() implementation to make timing reports prettier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122816 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 18:21:18 +00:00
Cameron Zwarich
64573aecb6 Switch to the new style of asterisk placement. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122815 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 18:19:19 +00:00
Chris Lattner
43b40a4620 fix an off-by-one bug that caused a crash analyzing 
ashr's with huge shift amounts, PR8896


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122814 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 18:19:15 +00:00
Michael J. Spencer
ba64b9706a UnitTests/Path: Produce useful diagnostics on error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122812 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 17:00:18 +00:00
Cameron Zwarich
26db45818a Switch to path halving from path compression for a small speedup. This also 
makes getLeader() nonrecursive.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122811 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 16:24:51 +00:00
Tobias Grosser
ee38f85104 Include llvm-gcc dir before llvm_tools_dir 
This ensures that always the recently compiled tools are picked for testing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122810 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 16:01:17 +00:00
Duncan Sands
c449a224bb These methods should be "const"; make them so. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122809 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 12:52:29 +00:00
Francois Pichet
ba69d3f6d4 Disable r122754 on Windows: was causing all lit tests to fail. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122808 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 10:23:42 +00:00
Chris Lattner
e41d3c015c Teach loop-idiom to turn a loop containing a memset into a larger memset 
when safe.

The testcase is basically this nested loop:
void foo(char *X) {
  for (int i = 0; i != 100; ++i) 
    for (int j = 0; j != 100; ++j)
      X[j+i*100] = 0;
}

which gets turned into a single memset now.  clang -O3 doesn't optimize
this yet though due to a phase ordering issue I haven't analyzed yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122806 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 07:46:33 +00:00
Chris Lattner
b7e9ef0ed1 restructure this a bit. Initialize the WeakVH with "I", the 
instruction *after* the store.  The store will always be deleted
if the transformation kicks in, so we'd do an N^2 scan of every
loop block.  Whoops.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122805 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 07:27:30 +00:00
Cameron Zwarich
645b1d2f12 Eliminate repeated allocation of a per-BB DenseMap for a 4.6% reduction of time 
spent in StrongPHIElimination on 403.gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122803 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 06:42:27 +00:00
Cameron Zwarich
95bb00414e Avoid finding loop back edges when we are not splitting critical edges in 
CodeGenPrepare (which is the default behavior).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122801 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 04:43:31 +00:00
David Greene
70ecc97550 Don't pattern match "/clang" so we don't mangle directory names. Some 
tests use absolute paths to clang.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122796 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 01:05:30 +00:00
Owen Anderson
fa3306af82 Clean up a funky pass registration that got passed over when I got rid of static constructors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122795 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 00:55:21 +00:00