Owen Anderson
3688f268cb
Remove GCSE, ValueNumbering, and LoadValueNumbering. These have been deprecated for almost a year; it's finally time for them to go away.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54822 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-15 21:31:02 +00:00
Nick Lewycky
a11e2eb845
Add a value range analysis that lazily computes ranges using ScalarEvolutions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52885 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-30 00:04:21 +00:00
Owen Anderson
5771d6c16d
Force postdom to be linked into opt and bugpoint, even though it is no longer used by any passes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51686 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-29 17:00:13 +00:00
Chris Lattner
029840c935
Add a new LibCallAliasAnalysis pass, which is parameterized
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by an instance of LibCallInfo to provide mod/ref info of
standard library functions. This is powerful enough to
say that 'sqrt' is readonly except that it modifies errno,
or that "printf doesn't store to memory unless the %n
constraint is present" etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50827 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 19:53:05 +00:00
Owen Anderson
0396cd33ca
Rename DeadLoopElimination to LoopDeletion, part 2.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50437 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-29 20:06:54 +00:00
Owen Anderson
0ff7708a5b
Add dead loop elimination, which removes dead loops for which we can compute
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the trip count.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50382 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-29 00:38:34 +00:00
Chris Lattner
8383a7b7a6
Add a new Jump Threading pass, which will handle cases
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such as those in PR2235. Right now the pass is not very
effective. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50000 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-20 20:35:01 +00:00
Owen Anderson
a723d1e48f
Factor a bunch of functionality related to memcpy and memset transforms out of
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GVN and into its own pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49419 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-09 08:23:16 +00:00
Devang Patel
c6791d9fca
Add new sretpromotion pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48032 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-07 21:07:34 +00:00
Devang Patel
5f2e4681ce
Add StripDeadPrototypes pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47488 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 18:39:29 +00:00
Chris Lattner
75542bd56b
remove the LowerSelect pass. The last client was the old Sparc backend, which is long dead by now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47323 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 07:49:17 +00:00
Chris Lattner
15f166c7b6
remove the lower packed pass. It can never work and even the parts that
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could work don't work fully. This fixes PR1705. Oh yeah, we don't have
packed types anymore either ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47322 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 07:39:17 +00:00
Bill Wendling
beefd3d0f8
The CorrelatedExpressionElimination pass is known to be buggy. Remove it.
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This fixes PR1769.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46408 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27 06:11:41 +00:00
Gordon Henriksen
8fa8929177
With this patch, the LowerGC transformation becomes the
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ShadowStackCollector, which additionally has reduced overhead with
no sacrifice in portability.
Considering a function @fun with 8 loop-local roots,
ShadowStackCollector introduces the following overhead
(x86):
; shadowstack prologue
movl L_llvm_gc_root_chain$non_lazy_ptr, %eax
movl (%eax), %ecx
movl $___gc_fun, 20(%esp)
movl $0, 24(%esp)
movl $0, 28(%esp)
movl $0, 32(%esp)
movl $0, 36(%esp)
movl $0, 40(%esp)
movl $0, 44(%esp)
movl $0, 48(%esp)
movl $0, 52(%esp)
movl %ecx, 16(%esp)
leal 16(%esp), %ecx
movl %ecx, (%eax)
; shadowstack loop overhead
(none)
; shadowstack epilogue
movl 48(%esp), %edx
movl %edx, (%ecx)
; shadowstack metadata
.align 3
___gc_fun: # __gc_fun
.long 8
.space 4
In comparison to LowerGC:
; lowergc prologue
movl L_llvm_gc_root_chain$non_lazy_ptr, %eax
movl (%eax), %ecx
movl %ecx, 48(%esp)
movl $8, 52(%esp)
movl $0, 60(%esp)
movl $0, 56(%esp)
movl $0, 68(%esp)
movl $0, 64(%esp)
movl $0, 76(%esp)
movl $0, 72(%esp)
movl $0, 84(%esp)
movl $0, 80(%esp)
movl $0, 92(%esp)
movl $0, 88(%esp)
movl $0, 100(%esp)
movl $0, 96(%esp)
movl $0, 108(%esp)
movl $0, 104(%esp)
movl $0, 116(%esp)
movl $0, 112(%esp)
; lowergc loop overhead
leal 44(%esp), %eax
movl %eax, 56(%esp)
leal 40(%esp), %eax
movl %eax, 64(%esp)
leal 36(%esp), %eax
movl %eax, 72(%esp)
leal 32(%esp), %eax
movl %eax, 80(%esp)
leal 28(%esp), %eax
movl %eax, 88(%esp)
leal 24(%esp), %eax
movl %eax, 96(%esp)
leal 20(%esp), %eax
movl %eax, 104(%esp)
leal 16(%esp), %eax
movl %eax, 112(%esp)
; lowergc epilogue
movl 48(%esp), %edx
movl %edx, (%ecx)
; lowergc metadata
(none)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45670 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:30:53 +00:00
Chris Lattner
f07b9a76e5
fix an accidental commit that broke all the testers :(
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45659 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 19:18:52 +00:00
Chris Lattner
2e48a70b35
rename isStore -> mayStore to more accurately reflect what it captures.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45656 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 08:36:04 +00:00
Owen Anderson
699f5faed5
Didn't mean to commit this.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45606 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 00:42:45 +00:00
Owen Anderson
d94b6a16fe
Move some more functionality from MRegisterInfo to TargetInstrInfo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45603 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 23:57:37 +00:00
Chris Lattner
7ed47a1335
Don't attribute in file headers anymore. See llvmdev for the
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discussion of this change. Boy are my fingers tired. ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 19:59:42 +00:00
Owen Anderson
7e9edda51d
Remove RLE from the headers, since the pass itself is gone now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41971 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-14 22:54:46 +00:00
Devang Patel
fee76bd9ba
Begin loop index split pass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40883 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-07 00:25:56 +00:00
Owen Anderson
f6a05f949f
Rename FastDSE to just DSE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40668 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-01 06:36:51 +00:00
Owen Anderson
1ad2cb7555
Add a GVN pass, using the value numbering code I developed for GVNPRE and the
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load elimination code from RedundantLoadElimination.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40469 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-24 17:55:58 +00:00
Owen Anderson
a7f98e2919
Rename a lot of things to change FastDLE to RedundantLoadElimination.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40457 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-24 00:17:04 +00:00
Owen Anderson
fb80b6e056
Forgot to commit this file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40447 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-23 22:00:03 +00:00
Owen Anderson
b77c457cc8
Add FastDSE, a new algorithm for doing dead store elimination. This algorithm is not as accurate
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as the current DSE, but it only a linear scan over each block, rather than quadratic. Eventually
(once it has been improved somewhat), this will replace the current DSE.
NOTE: This has not yet been extensively tested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38517 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11 00:46:18 +00:00
Owen Anderson
1f476f4d84
Put GVN-PRE in all the right places.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37352 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-29 23:36:32 +00:00
Owen Anderson
3dc6776b33
Remove ImmediateDominator analysis. The same information can be obtained from DomTree. A lot of code for
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constructing ImmediateDominator is now folded into DomTree construction.
This is part of the ongoing work for PR217.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36063 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-15 08:47:27 +00:00
Owen Anderson
ba43963e96
Completely purge DomSet. This is the (hopefully) final patch for PR1171.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35731 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-07 07:17:27 +00:00
Chris Lattner
6116fb1035
add loop rot
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35722 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-07 04:43:02 +00:00
Chris Lattner
dbe0deca33
Split the sdisel code munging stuff out into its own opt-pass, CodeGenPrepare.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35528 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-31 04:06:36 +00:00
Chris Lattner
a9a23d8faf
remove some passes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34437 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-20 05:31:04 +00:00
Reid Spencer
ef9b9a7939
For PR411:
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This patch replaces the SymbolTable class with ValueSymbolTable which does
not support types planes. This means that all symbol names in LLVM must now
be unique. The patch addresses the necessary changes to deal with this and
removes code no longer needed as a result. This completes the bulk of the
changes for this PR. Some cleanup patches will follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33918 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-05 20:47:22 +00:00
Reid Spencer
7ba98a9000
For PR1072:
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Removing -raise has neglible positive or negative side effects so we are
opting to remove it. See the PR for comparison details.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33844 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-03 23:15:56 +00:00
Chris Lattner
fd0cf61670
remove an old instrumentation pass that is not used anymore.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32997 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-07 18:12:13 +00:00
John Criswell
bc80038791
Remove DSA header files.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32552 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-13 19:55:53 +00:00
John Criswell
e026c070c4
Remove DSA.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32542 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-13 16:54:24 +00:00
Andrew Lenharth
472c7918b0
A shim over other AA impls to catch incorrect uses
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31724 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-14 05:21:04 +00:00
Nick Lewycky
05450ae128
Add PredicateSimplifier pass. Collapses equal variables into one form
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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
Reid Spencer
037ce981d8
Fix the documentation for this file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29788 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-21 05:37:03 +00:00
Reid Spencer
62c5105adc
For PR885:
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Consolidate the LinkAllAnalyses.h and LinkAllPasses.h headers into one
so there is no dupliation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29787 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-21 05:34:03 +00:00