Duncan Sands
f40708223e
Workaround for PR1508.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37597 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 19:04:19 +00:00
Dan Gohman
e19dd87598
Use SCEVConstant::get instead of SCEVUnknown::get to create an
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integer constant SCEV.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37596 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 18:00:55 +00:00
Owen Anderson
383bcb2e78
Fix test/Transforms/GVNPRE/2007-06-15-Looping.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37595 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 17:55:15 +00:00
Owen Anderson
0bee3f44ca
Add a testcase where GVNPRE what getting confused by a loop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37594 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 17:54:05 +00:00
Evan Cheng
9333545980
Extra edges are deleted later if needed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37593 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 17:34:48 +00:00
Duncan Sands
9d46cd5507
Use "ignore" rather than grep tricks.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37592 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 17:13:53 +00:00
Dan Gohman
d19534add9
Add a SCEV class and supporting code for sign-extend expressions.
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This created an ambiguity for expandInTy to decide when to use
sign-extension or zero-extension, but it turns out that most of its callers
don't actually need a type conversion, now that LLVM types don't have
explicit signedness. Drop expandInTy in favor of plain expand, and change
the few places that actually need a type conversion to do it themselves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37591 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 14:38:12 +00:00
Evan Cheng
2c8c3a4a0d
Allow small blocks to be duplicated to enable if-conversion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37590 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 07:36:12 +00:00
Chris Lattner
7cbe2ebb21
Generalize many transforms to work on ~ of vectors in addition to ~ of
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integer ops. This implements Transforms/InstCombine/and-or-not.ll
test3/test4, and finishes off PR1510
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37589 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 06:23:19 +00:00
Chris Lattner
3dcf510ba1
add vector versions of this test
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37588 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 06:22:32 +00:00
Chris Lattner
b0760c80b3
m_not should match vector not
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37587 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 06:13:47 +00:00
Chris Lattner
cef4b53a3e
add a Constant::getAllOnesValue helper function, which works on integers
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AND vectors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37586 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 06:10:53 +00:00
Chris Lattner
e20b7bec02
Enhance BinaryOperator::isNot to support vector not.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37585 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 06:04:24 +00:00
Chris Lattner
003b6200df
Implement two xforms:
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1. ~(~X | Y) === (X & ~Y)
2. (A|B) & ~(A&B) -> A^B
This allows us to transform ~(~(a|b) | (a&b)) -> a^b.
This implements PR1510 for scalar values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37584 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 05:58:24 +00:00
Chris Lattner
546fdae370
testcase for PR1510
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37583 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 05:57:20 +00:00
Chris Lattner
041a6c9048
delete some obviously dead vector operations, which deletes a few thousand
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operations from Duraids example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37582 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 05:26:55 +00:00
Evan Cheng
bc198eeba6
No really, clear predcessors states.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37581 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 23:34:09 +00:00
Evan Cheng
e37e24331c
If BB is predicated, invalidate its predecessor(s) which would if-convert it. It needs to be re-analyzed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37580 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 23:13:19 +00:00
Dan Gohman
51eaa86758
Rename MVT::getVectorBaseType to MVT::getVectorElementType.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37579 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 22:58:02 +00:00
Dale Johannesen
318093b6f8
Do not treat FP_REG_KILL as terminator in branch analysis (X86).
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37578 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 22:03:45 +00:00
Evan Cheng
b7c908bb81
Fix typo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37577 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 21:26:08 +00:00
Dan Gohman
c101e95cb6
Add a target hook to allow loads from constant pools to be rematerialized, and an
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implementation for x86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37576 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 20:50:44 +00:00
Evan Cheng
86ff296e63
Fix some stupid bugs that have effectively disabled if-conversion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37575 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 20:28:52 +00:00
Dan Gohman
af67ea7318
Eliminate some redundant newlines in asm output.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37574 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 15:00:27 +00:00
Duncan Sands
41783f0bc7
Fix typos.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37573 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 11:27:07 +00:00
Christopher Lamb
a321125e8b
Add support to tablegen for specifying subregister classes on a per register class basis.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37572 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-13 22:20:15 +00:00
Dale Johannesen
13e8b51e3e
Handle blocks with 2 unconditional branches in AnalyzeBranch.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37571 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-13 17:59:52 +00:00
Duncan Sands
ea632439d4
Only correctly lower exception handing intrinsics if exception handling is
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turned on. Likewise for scanning of invokes to mark landing pads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37570 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-13 16:53:21 +00:00
Dan Gohman
6595635175
Introduce new SelectionDAG node opcodes VEXTRACT_SUBVECTOR and
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VCONCAT_VECTORS. Use these for CopyToReg and CopyFromReg legalizing in
the case that the full register is to be split into subvectors instead
of scalars. This replaces uses of VBIT_CONVERT to present values as
vector-of-vector types in order to make whole subvectors accessible via
BUILD_VECTOR and EXTRACT_VECTOR_ELT.
This is in preparation for adding extended ValueType values, where
having vector-of-vector types is undesirable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37569 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-13 15:12:02 +00:00
Dan Gohman
2046e12f02
When creating CopyFromReg nodes, always use legal types. And use the
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correct types for the result vector, even though it is currently bitcasted
to a different type immediately.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37568 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-13 14:55:16 +00:00
Duncan Sands
f19f6bb31e
The fix that was applied for PR1224 stops the compiler
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crashing but breaks exception handling. The problem
described in PR1224 is that invoke is a terminator that
can produce a value. The value may be needed in other
blocks. The code that writes to registers values needed
in other blocks runs before terminators are lowered (in
this case invoke) so asserted because the value was not
yet available. The fix that was applied was to do invoke
lowering earlier, before writing values to registers.
The problem this causes is that the code to copy values
to registers can be output after the invoke call. If
an exception is raised and control is passed to the
landing pad then this copy-code will never execute. If
the value is needed in some code path reached via the
landing pad then that code will get something bogus.
So revert the original fix and simply skip invoke values
in the general copying to registers code. Instead copy
the invoke value to a register in the invoke lowering code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37567 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-13 05:51:31 +00:00
Evan Cheng
93a8e5ea0c
Typo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37566 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-13 00:04:00 +00:00
Evan Cheng
cc8fb46cdc
Now if-converting all 4 variants of triangles.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37565 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 23:54:05 +00:00
Owen Anderson
71fcebcf8a
Fix test/Transforms/GVNPRE/2007-06-12-PhiTranslate.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37564 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 22:43:57 +00:00
Owen Anderson
0f661dc957
Add a test where phi translation was producing a null result.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37563 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 22:42:35 +00:00
Devang Patel
d75405fe95
isReachableFromEntry() is not suitable for post dominator.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37562 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 17:50:25 +00:00
Devang Patel
de6e132055
Remove redundant check.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37561 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 17:35:20 +00:00
Devang Patel
6857e366f5
Protect updateDFSNumbers()
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37560 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 17:30:56 +00:00
Devang Patel
5fd306bf0d
Check A dominates B and vise versa first while searching for nearest
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common dominator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37559 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 17:17:57 +00:00
Chris Lattner
6c0955b9cb
one final bugfix
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37558 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 17:01:15 +00:00
Chris Lattner
a89e5f1fd5
modernize example
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37557 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 17:00:26 +00:00
Owen Anderson
239e71201e
Refactor some code, and fix test/Transforms/GVNPRE/2007-06-12-NoExit.ll by being more careful when using
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post-dominator information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37556 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 16:57:50 +00:00
Owen Anderson
93f905daef
Testcase where GVNPRE crashes on functions with no exit nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37555 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 16:56:00 +00:00
Dale Johannesen
ce0b23721e
Sink CmpInst's to their uses to reduce register pressure.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37554 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 16:50:17 +00:00
Devang Patel
9c7ee6b19f
Make DFS number manipulation methods private.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37553 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 05:49:31 +00:00
Owen Anderson
7706d23399
Make the run line for this test correct. Thanks to Chris for spotting it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37552 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 04:40:48 +00:00
Devang Patel
4d42dea253
Break DominatorTree from ETNode.
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Remove unused PostETForest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37551 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 00:54:38 +00:00
Owen Anderson
65d2862a60
Fix a few more bugs, including an instance of walking in reverse topological rather than topological order. This
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fixes a testcase extracted from llvm-test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37550 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 00:50:47 +00:00
Owen Anderson
95d5c34d3e
Add a GVN-PRE basic regression test.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37549 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 00:49:33 +00:00
Devang Patel
bdfa1f837c
Use SmallPtrSet instaed of std::set
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37548 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-12 00:40:51 +00:00