Bob Wilson
b29d7d2542
Revert r97245 which seems to be causing performance problems.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97366 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 05:34:05 +00:00
Bob Wilson
8561dcd730
Move the EnableFullLoadPRE flag from a separate command-line option to an
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argument of createGVNPass and set it automatically for -O3.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97245 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26 19:09:47 +00:00
Bob Wilson
60df9077eb
Remove unused "NoPRE" parameter in GVN and createGVNPass().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97235 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26 18:35:19 +00:00
Bob Wilson
ae23daf63a
Rename SuccessorNumber to GetSuccessorNumber.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96387 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 21:06:42 +00:00
Bob Wilson
adb6f22671
Refactor to share code to find the position of a basic block successor in the
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terminator's list of successors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96377 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 19:49:17 +00:00
Eric Christopher
d2592ff69b
Pull these back out, they're a little too aggressive and time
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consuming for a simple optimization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95671 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09 17:29:18 +00:00
Eric Christopher
1926b648e1
Add a new pass to do llvm.objsize lowering using SCEV.
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Initial skeleton and SCEVUnknown lowering implemented,
the rest should come relatively quickly. Move testcase
to new directory.
Move pass to right before SimplifyLibCalls - which is
moved down a bit so we can take advantage of a few opts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95628 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09 00:35:38 +00:00
Jakob Stoklund Olesen
570a4a5d9c
Reintroduce the InlineHint function attribute.
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This time it's for real! I am going to hook this up in the frontends as well.
The inliner has some experimental heuristics for dealing with the inline hint.
When given a -respect-inlinehint option, functions marked with the inline
keyword are given a threshold just above the default for -O3.
We need some experiments to determine if that is the right thing to do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95466 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06 01:16:28 +00:00
Jakob Stoklund Olesen
58e9ee85fd
Teach SimplifyCFG about magic pointer constants.
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Weird code sometimes uses pointer constants other than null. This patch
teaches SimplifyCFG to build switch instructions in those cases.
Code like this:
void f(const char *x) {
if (!x)
puts("null");
else if ((uintptr_t)x == 1)
puts("one");
else if (x == (char*)2 || x == (char*)3)
puts("two");
else if ((intptr_t)x == 4)
puts("four");
else
puts(x);
}
Now becomes a switch:
define void @f(i8* %x) nounwind ssp {
entry:
%magicptr23 = ptrtoint i8* %x to i64 ; <i64> [#uses=1]
switch i64 %magicptr23, label %if.else16 [
i64 0, label %if.then
i64 1, label %if.then2
i64 2, label %if.then9
i64 3, label %if.then9
i64 4, label %if.then14
]
Note that LLVM's own DenseMap uses magic pointers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95439 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05 22:03:18 +00:00
Bob Wilson
49db68fba0
Check alignment of loads when deciding whether it is safe to execute them
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unconditionally. Besides checking the offset, also check that the underlying
object is aligned as much as the load itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-30 04:42:39 +00:00
Bob Wilson
3eb4f7e2dd
Improve isSafeToLoadUnconditionally to recognize that GEPs with constant
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indices are safe if the result is known to be within the bounds of the
underlying object.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94829 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29 19:19:08 +00:00
Benjamin Kramer
5deb57c685
Don't bother with sprintf, just pass the Twine through.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94684 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27 19:58:47 +00:00
Victor Hernandez
6c146eefbf
DbgInfoIntrinsics no longer appear in an instruction's use list; so clean up looking for them in use iterations and remove OnlyUsedByDbgInfoIntrinsics()
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94111 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21 23:05:53 +00:00
Jakob Stoklund Olesen
f8526cb711
Move per-function inline threshold calculation to a method.
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No functional change except the forgotten test for
InlineLimit.getNumOccurrences() == 0 in the CurrentThreshold2 calculation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94007 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-20 17:51:28 +00:00
Chris Lattner
e234a30a28
add a helper function.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93251 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-12 19:40:54 +00:00
Dan Gohman
90fe0bd68c
Make RecursivelyDeleteTriviallyDeadInstructions,
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RecursivelyDeleteDeadPHINode, and DeleteDeadPHIs return a flag
indicating whether they made any changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92732 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 15:45:31 +00:00
Chris Lattner
43fd9017a6
convert various IntrinsicInst's to use class instead of struct.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92681 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 05:21:26 +00:00
Devang Patel
44a29e066a
Remove dead debug info intrinsics.
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Intrinsic::dbg_stoppoint
Intrinsic::dbg_region_start
Intrinsic::dbg_region_end
Intrinsic::dbg_func_start
AutoUpgrade simply ignores these intrinsics now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92557 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 01:10:40 +00:00
Chris Lattner
5fadf17709
remove the random sampling framework, which is not maintained anymore.
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If there is interest, it can be resurrected from SVN. PR4912.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92422 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-02 20:07:03 +00:00
Chris Lattner
a25bc44663
comment fix: weakvh -> tracking vh
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91867 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-22 00:51:57 +00:00
Dan Gohman
43ea505fb0
Eliminate unnecessary LLVMContexts.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91729 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-18 23:42:08 +00:00
Nick Lewycky
ce2c51b670
Pull LLVMContext out of PromoteMemToReg.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89645 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 03:50:44 +00:00
Jim Grosbach
20f4d34fe3
Make EliminateDuplicatePHINodes() available as a utility function
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89297 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19 02:02:10 +00:00
Dan Gohman
4ec01b268e
Add an option for running GVN with redundant load processing disabled.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88742 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14 02:27:51 +00:00
Chris Lattner
f8fb7c26ee
remove the now dead condprop pass, PR3906.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86810 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-11 05:56:35 +00:00
Devang Patel
53bb5c95af
Implement support to debug inlined functions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86748 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10 23:06:00 +00:00
Chris Lattner
40d8c28b27
move some generally useful functions out of jump threading
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into libanalysis and transformutils.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86735 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10 22:26:15 +00:00
Chris Lattner
dce94d92df
refactor TryToSimplifyUncondBranchFromEmptyBlock out of SimplifyCFG.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86666 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10 05:59:26 +00:00
Douglas Gregor
0c8ae782cb
Make a few more LLVM headers parsable as standalone headers.
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Fix some problems with the hidden copy constructors for
ImmutableMap/ImmutableSet found by Clang++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86186 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-05 23:01:30 +00:00
Duncan Sands
857e9996c7
Improve the other instance of the comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85733 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 19:16:21 +00:00
Chris Lattner
1b98ff3e4f
update the comment above llvm::SplitCriticalEdge, and make
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it abort on IndirectBrInst as describe in the comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85688 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 21:51:10 +00:00
Dan Gohman
438b583dbd
Revert r85667. LoopUnroll currently can't call utility functions which
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auto-update the DominatorTree because it doesn't keep the DominatorTree
current while it works.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85670 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 17:33:01 +00:00
Dan Gohman
f230d8ad15
Merge the enhancements from LoopUnroll's FoldBlockIntoPredecessor into
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MergeBlockIntoPredecessor. This makes SimplifyCFG slightly more aggressive,
and makes it unnecessary for LoopUnroll to have its own copy of this code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85667 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 16:08:00 +00:00
Dan Gohman
9f476e3179
Remove CodeGenLICM. It's largely obsoleted by MachineLICM's new ability
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to unfold loop-invariant loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85657 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 14:35:41 +00:00
Evan Cheng
2f192c256c
Add option to createGVNPass to disable PRE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85609 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30 20:12:24 +00:00
Nick Lewycky
40cc524ede
Add ABCD, a generalized implementation of the Elimination of Array Bounds
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Checks on Demand algorithm which looks at arbitrary branches instead of loop
iterations. This is GSoC work by Andre Tavares with only editorial changes
applied!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85382 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28 07:03:15 +00:00
Owen Anderson
8b251c25b2
Forgot to commit these.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85180 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 23:56:52 +00:00
Victor Hernandez
046e78ce55
Remove FreeInst.
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Remove LowerAllocations pass.
Update some more passes to treate free calls just like they were treating FreeInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85176 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 23:43:48 +00:00
Dan Gohman
6000e253d4
Check in the experimental GEP splitter pass. This pass splits complex
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GEPs (more than one non-zero index) into simple GEPs (at most one
non-zero index). In some simple experiments using this it's not
uncommon to see 3% overall code size wins, because it exposes
redundancies that can be eliminated, however it's tricky to use
because instcombine aggressively undoes the work that this pass does.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85144 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 19:12:14 +00:00
Dan Gohman
5fa75b0fa4
MapValue doesn't needs its LLVMContext argument.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85020 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24 23:37:16 +00:00
Dan Gohman
bfd5e3d7b1
Add an explicit keyword.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85009 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24 19:56:23 +00:00
Victor Hernandez
66284e063a
Auto-upgrade free instructions to calls to the builtin free function.
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Update all analysis passes and transforms to treat free calls just like FreeInst.
Remove RaiseAllocations and all its tests since FreeInst no longer needs to be raised.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84987 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-24 04:23:03 +00:00
Chris Lattner
98b532cf33
remove the IndMemRemPass, which only made sense for when malloc/free were intrinsic
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instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84404 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18 05:02:09 +00:00
Victor Hernandez
a276c603b8
Remove MallocInst from LLVM Instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84299 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-17 01:18:07 +00:00
Duncan Sands
ed90342d8a
Strip trailing white space.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84256 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16 15:20:13 +00:00
Dan Gohman
e4aeec003f
Move the InlineCost code from Transforms/Utils to Analysis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83998 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13 18:30:07 +00:00
Dan Gohman
9b39cf5ac8
Start refactoring the inline cost estimation code so that it can be used
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for purposes other than inlining.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83997 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13 18:24:11 +00:00
Chris Lattner
0bef562ea2
add a simple helper method.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83745 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 23:41:48 +00:00
Chris Lattner
f5a1fb6b24
add ability for clients of SSAUpdater to find out about the
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PHI nodes inserted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83744 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 23:15:24 +00:00
Chris Lattner
1a8d4de397
add the ability to get a rewritten value from the middle of a block,
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not just at the end. Add a big comment explaining when this could
be useful (which never happens for jump threading).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83741 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10 23:00:11 +00:00