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4027 Commits

Author SHA1 Message Date
Eric Christopher
6618a241f7 Add a new wrapper node for a DILexicalBlock that encapsulates it and a 
file. Since it should only be used when necessary propagate it through
the backend code generation and tweak testcases accordingly.

This helps with code like in clang's test/CodeGen/debug-info-line.c where
we have multiple #line directives within a single lexical block and want
to generate only a single block that contains each file change.

Part of rdar://10246360

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141729 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-11 22:59:11 +00:00
Andrew Trick
204494149b Move replaceCongruentIVs into SCEVExapander and bias toward "expanded" 
IVs.

Indvars previously chose randomly between congruent IVs. Now it will
bias the decision toward IVs that SCEVExpander likes to create. This
was not done to fix any problem, it's just a welcome side effect of
factoring code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141633 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-11 02:28:51 +00:00
Andrew Trick
94794dd8d3 Add an extra safety check in front of the optimization in r141442. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141470 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-08 02:16:39 +00:00
Andrew Trick
c570191060 LSR should only reuse phis that match its formula. 
Fixes rdar://problem/5064068


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141442 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-07 23:46:21 +00:00
Eli Friedman
8540101252 Remove the old atomic instrinsics. autoupgrade functionality is included with this patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141333 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-06 23:20:49 +00:00
Andrew Trick
ef8a4c2a65 Fixes PR11070 - assert in SCEV getConstantEvolvingPHIOperands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141219 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-05 22:06:53 +00:00
Andrew Trick
b73a8414a7 Typo. Thanks Bob. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141188 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-05 16:52:28 +00:00
Chandler Carruth
f3baa581e8 Fix a broken assert found by -Wparentheses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141168 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-05 07:02:23 +00:00
Andrew Trick
28ab7db2c3 Fix disabled SCEV analysis caused r141161 and add unit test. 
I noticed during self-review that my previous checkin disabled some
analysis. Even with the reenabled analysis the test case runs in about
5ms. Without the fix, it will take several minutes at least.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141164 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-05 05:58:49 +00:00
Andrew Trick
13d31e0368 Avoid exponential recursion in SCEV getConstantEvolvingPHI and EvaluateExpression. 
Note to compiler writers: never recurse on multiple instruction
operands without memoization.
Fixes rdar://10187945. Was taking 45s, now taking 5ms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141161 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-05 03:25:31 +00:00
Nick Lewycky
e97728ecf8 The product of two chrec's can always be represented as a chrec. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141066 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-04 06:51:26 +00:00
Nick Lewycky
1cbae18cf6 Reapply r140979 with fix! We never did get a testcase, but careful review of the 
logic by David Meyer revealed this bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140992 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-03 07:10:45 +00:00
Nick Lewycky
4fcc80a486 Revert r140979 due to reports of bootstrap failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140980 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-03 05:14:59 +00:00
Nick Lewycky
8fde4f5842 Add one more case we compute a max trip count. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140979 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-03 01:03:57 +00:00
Andrew Trick
b2ab2fa524 Inlining and unrolling heuristics should be aware of free truncs. 
We want heuristics to be based on accurate data, but more importantly
we don't want llvm to behave randomly. A benign trunc inserted by an
upstream pass should not cause a wild swings in optimization
level. See PR11034. It's a general problem with threshold-based
heuristics, but we can make it less bad.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140919 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-01 01:39:05 +00:00
Andrew Trick
5c655413cf whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140916 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-01 01:27:56 +00:00
Andrew Trick
f63ae2159d indvars: generalize SCEV getPreStartForSignExtend. 
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. 
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. 
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. 
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. 
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. 
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. 
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. 
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 
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. 
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. 
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. 
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. 
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 
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. 
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. 
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! 
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. 
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 
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. 
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! 
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 
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. 
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 
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. 
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 
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. 
- 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. 
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. 
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: 
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. 
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. 
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. 
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. 
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