Andrew Trick
f63ae2159d
indvars: generalize SCEV getPreStartForSignExtend.
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Handle general Add expressions to avoid leaving around redundant
32-bit IVs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140701 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-28 17:02:54 +00:00
Eli Friedman
e6fadced87
PR10628: Fix getModRefInfo so it queries the underlying alias() implementation correctly while checking nocapture calls.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140666 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-28 00:34:27 +00:00
Benjamin Kramer
a9390a4d5f
Stop emitting instructions with the name "tmp" they eat up memory and have to be uniqued, without any benefit.
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If someone prefers %tmp42 to %42, run instnamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140634 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-27 20:39:19 +00:00
Eli Friedman
46cb5afdcd
Enhance alias analysis for atomic instructions a bit. Upgrade a couple alias-analysis tests to the new atomic instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140557 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-26 20:15:28 +00:00
Galina Kistanova
ef01f32d07
Fix for DbgInfoPrinter.cpp:174:12: warning: ‘LineNo’ may be used uninitialized in this function.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140281 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-21 23:34:23 +00:00
Devang Patel
734a67cda5
Add support to emit debug info for C++0x nullptr type.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139751 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-14 23:13:28 +00:00
Eric Christopher
c27c7342aa
Fix typo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139530 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-12 19:58:22 +00:00
Devang Patel
811ae5b09c
Add asserts to keep front-ends honest while encoding debug info into LLVM IR using DIBuilder.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139515 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-12 18:26:08 +00:00
Andrew Trick
543376743c
Set NSW/NUW flags on SCEVAddExpr when the operation is flagged as
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such.
I'm doing this now for completeness because I can't think of/remember
any reason that it was left out. I'm not sure it will help anything,
but if we don't do it we need to explain why in comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139450 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-10 01:09:50 +00:00
Eli Friedman
184166da61
A couple minor corrections to r139276.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139277 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-08 02:37:07 +00:00
Eli Friedman
81ac8ddc67
Fix the logic in BasicAliasAnalysis::aliasGEP for comparing GEP's with variable differences so that it actually does something sane. Fixes PR10881.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139276 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-08 02:23:31 +00:00
Owen Anderson
e421ad64ff
memset_pattern16 uses a 16 BYTE pattern, not a 16 BIT pattern. Add comments to that effect.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139205 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 23:43:26 +00:00
Owen Anderson
69acc93b3d
Teach BasicAA about the aliasing properties of memset_pattern16.
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Fixes PR10872 and <rdar://problem/10065079>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139204 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 23:33:25 +00:00
Nick Lewycky
c103a08a11
This transform only handles two-operand AddRec's. Prevent it from trying to
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handle anything more complex. Fixes PR10383 again!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139186 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 21:42:18 +00:00
Devang Patel
fa515ecbca
Now, named mdnode llvm.dbg.cu keeps track of all compile units in a module. Update DebugInfoFinder to collect compile units from llvm.dbg.cu.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139147 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 17:40:08 +00:00
Nick Lewycky
ecd37bcd5c
Fix typo in comment again.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139139 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 07:02:40 +00:00
Nick Lewycky
9115fba853
Apparently we compile the code, not the comments. Thanks Eli!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139138 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 06:56:00 +00:00
Nick Lewycky
e6180992eb
Fix typo in comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139137 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 06:46:01 +00:00
Nick Lewycky
8cfb2f8bce
Nope! I had it right the first time. Revert the operative part of r139135 and
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add more showing of my work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139136 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 06:39:54 +00:00
Nick Lewycky
28682ae00f
Fix flipped sign. While there, show my math.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139135 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 05:33:18 +00:00
Nick Lewycky
980e9f399d
No no no, fix typo properly!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139134 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 05:08:09 +00:00
Nick Lewycky
fa151a79ed
The logic inside getMulExpr to simplify {a,+,b}*{c,+,d} was wrong, which was
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visible given a=b=c=d=1, on iteration #1 (the second iteration). Replace it with
correct math. Fixes PR10383!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139133 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 05:05:14 +00:00
Nick Lewycky
b2840fdcd8
Revert r139126 due to selfhost failures reported by buildbots.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139130 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06 02:43:13 +00:00
Nick Lewycky
77b7352db0
Teach SCEV to report a max backedge count in one interesting case in
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HowFarToZero; the case for a canonical loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139126 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-05 23:25:16 +00:00
Benjamin Kramer
ae707bd559
InstSimplify: Don't try to replace an extractvalue/insertvalue pair with the original value if types don't match.
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Fixes clang selfhost.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139120 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-05 18:16:19 +00:00
Duncan Sands
dabc280672
Add some simple insertvalue simplifications, for the purpose of cleaning
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up do-nothing exception handling code produced by dragonegg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139113 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-05 06:52:48 +00:00
Benjamin Kramer
26eb870d7e
Use canonical forms for the branch probability zero heutistic.
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- Drop support for X >u 0, it's equivalent to X != 0 and should be canonicalized into the latter.
- Add X < 1 -> unlikely, which is what instcombine canonicalizes X <= 0 into.
- Add X > -1 -> likely, which is what instcombine canonicalizes X >= 0 into.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139110 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-04 23:53:04 +00:00
Andrew Trick
252ef7a61a
Comment and clarifying assert.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139036 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-02 21:20:46 +00:00
Devang Patel
b71541a2db
After r138010, subroutine type does not have context info. Update type verifier accordingly.
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This fixes ptype.exp gdb testsuite regressions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138869 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31 18:04:31 +00:00
Nadav Rotem
89879ec76b
Fixes following the CR by Chris and Duncan:
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Optimize chained bitcasts of the form A->B->A.
Undo r138722 and change isEliminableCastPair to allow this case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138756 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-29 19:58:36 +00:00
Andrew Trick
0e122d1c24
Reapply r138695. Fix PassManager stack depths.
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Patch by Xiaoyi Guo!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138737 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-29 17:07:00 +00:00
Nadav Rotem
be6ceb6ebc
Bitcasts are transitive. Bitcast-Bitcast-X becomes Bitcast-X.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138722 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-28 11:51:08 +00:00
Andrew Trick
8592a0cda4
Reverting r138695 to see if it fixes clang self host.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138701 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-27 06:10:16 +00:00
Andrew Trick
b846192230
Fix PassManager stack depths.
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Patch by Xiaoyi Guo!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138695 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-27 02:11:03 +00:00
Eric Christopher
6c0046f5d4
Whitespace and 80-col.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138654 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 21:02:40 +00:00
Andrew Trick
5434c1e73b
LoopInfo::updateUnloop fix, and verify Block->Loop maps.
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Fixes an oversight, and adds verification to catch it in the unloop.ll tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138622 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 03:06:34 +00:00
Bill Wendling
a4c86ab073
Skip the landingpad instruction when determining the insertion point.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138481 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 21:06:46 +00:00
Nadav Rotem
4c7c0f2353
Implement Constant::isAllOnesValue(). Fix ConstantFolding to use the new api.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138469 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24 20:18:38 +00:00
Eric Christopher
acc8f2d938
Revert "Address Duncan's CR request:"
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This reverts commit 20a05be15e
. (svn rev 138340)
Conflicts:
test/Transforms/InstCombine/bitcast.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138366 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-23 20:11:10 +00:00
Nadav Rotem
20a05be15e
Address Duncan's CR request:
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1. Cleanup the tests in ConstantFolding.cpp
2. Implement isAllOnes for Constant, ConstantFP, ConstantVector
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138340 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-23 17:48:43 +00:00
Nadav Rotem
1c9fe0361b
Add constant folding support for bitcasts of splat vectors to integers.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138206 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-20 14:02:29 +00:00
Devang Patel
93d39be530
Do not use named md nodes to track variables that are completely optimized. This does not scale while doing LTO with debug info. New approach is to include list of variables in the subprogram info directly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138145 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-19 23:28:12 +00:00
Benjamin Kramer
a67f14bf53
Make a bunch of symbols private.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138025 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-19 01:42:18 +00:00
Benjamin Kramer
613d13beb0
C API functions must be able to see their extern "C" definitions, or it will be impossible to call them from C.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138022 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-19 01:36:54 +00:00
Devang Patel
2bd6269417
There is no need to add file as context for subroutine type. The subroutine type does not need any context.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138010 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-18 23:50:57 +00:00
Bill Wendling
c9b2a987a2
Revert r137655. There is some question about whether the 'landingpad'
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instruction should be marked as potentially reading and/or writing memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137863 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-17 20:36:44 +00:00
Eli Friedman
f23d4adbfa
Revert r137781; I agree with Duncan's comment that the situation in question is clearly impossible given the current structure of the code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137853 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-17 19:31:49 +00:00
Eli Friedman
207634263c
Extend the undef ^ undef idiom once more. No testcase: I can't figure out how to actually trigger the codepath in question at the moment, but it might get exposed in the future.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137781 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-16 22:38:34 +00:00
Devang Patel
94c7ddb6f5
Until now all debug info MDNodes referred to a root MDNode, a compile unit. This simplified handling of these needs in dwarf writer. However, one side effect of this is that during link time optimization all these MDNodes are _not_ uniqued. In other words there will be N number of MDNodes describing "int", "char" and all other types, which would suddenly grow when each object file starts using libraries like STL.
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MDNodes graph structure such that compiler unit keeps track of important MDNodes and update dwarf writer to process mdnodes top-down instead of bottom up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137778 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-16 22:09:43 +00:00
Bill Wendling
5b6f42f57e
Use the getFirstInsertionPt() method instead of getFirstNonPHI + an 'isa<>'
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check for a LandingPadInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137745 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-16 20:45:24 +00:00