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3968 Commits

Author SHA1 Message Date
Galina Kistanova
5d64adbe43 Fix for DbgInfoPrinter.cpp:174:12: warning: ‘LineNo’ may be used uninitialized in this function. 
llvm-svn: 140281
 2011-09-21 23:34:23 +00:00
Devang Patel
e5dc3a1f1e Add support to emit debug info for C++0x nullptr type. 
llvm-svn: 139751
 2011-09-14 23:13:28 +00:00
Eric Christopher
665ace6bce Fix typo. 
llvm-svn: 139530
 2011-09-12 19:58:22 +00:00
Devang Patel
c7a1210467 Add asserts to keep front-ends honest while encoding debug info into LLVM IR using DIBuilder. 
llvm-svn: 139515
 2011-09-12 18:26:08 +00:00
Andrew Trick
8af62b87e4 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.

llvm-svn: 139450
 2011-09-10 01:09:50 +00:00
Eli Friedman
c933295353 A couple minor corrections to r139276. 
llvm-svn: 139277
 2011-09-08 02:37:07 +00:00
Eli Friedman
6e9cab83b0 Fix the logic in BasicAliasAnalysis::aliasGEP for comparing GEP's with variable differences so that it actually does something sane. Fixes PR10881. 
llvm-svn: 139276
 2011-09-08 02:23:31 +00:00
Owen Anderson
9ae90800a2 memset_pattern16 uses a 16 BYTE pattern, not a 16 BIT pattern. Add comments to that effect. 
llvm-svn: 139205
 2011-09-06 23:43:26 +00:00
Owen Anderson
483f94e8d1 Teach BasicAA about the aliasing properties of memset_pattern16. 
Fixes PR10872 and <rdar://problem/10065079>.

llvm-svn: 139204
 2011-09-06 23:33:25 +00:00
Nick Lewycky
8203bcfd03 This transform only handles two-operand AddRec's. Prevent it from trying to 
handle anything more complex. Fixes PR10383 again!

llvm-svn: 139186
 2011-09-06 21:42:18 +00:00
Devang Patel
2c2dd9114e 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. 
llvm-svn: 139147
 2011-09-06 17:40:08 +00:00
Nick Lewycky
e1c0b41d41 Fix typo in comment again. 
llvm-svn: 139139
 2011-09-06 07:02:40 +00:00
Nick Lewycky
700f71a0ac Apparently we compile the code, not the comments. Thanks Eli! 
llvm-svn: 139138
 2011-09-06 06:56:00 +00:00
Nick Lewycky
4add6eec38 Fix typo in comment. 
llvm-svn: 139137
 2011-09-06 06:46:01 +00:00
Nick Lewycky
0c9df5d6c2 Nope! I had it right the first time. Revert the operative part of r139135 and 
add more showing of my work.

llvm-svn: 139136
 2011-09-06 06:39:54 +00:00
Nick Lewycky
39b165bb7d Fix flipped sign. While there, show my math. 
llvm-svn: 139135
 2011-09-06 05:33:18 +00:00
Nick Lewycky
fdc650ea7a No no no, fix typo properly! 
llvm-svn: 139134
 2011-09-06 05:08:09 +00:00
Nick Lewycky
3823432a57 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!

llvm-svn: 139133
 2011-09-06 05:05:14 +00:00
Nick Lewycky
18c0b01a56 Revert r139126 due to selfhost failures reported by buildbots. 
llvm-svn: 139130
 2011-09-06 02:43:13 +00:00
Nick Lewycky
30dcc754df Teach SCEV to report a max backedge count in one interesting case in 
HowFarToZero; the case for a canonical loop.

llvm-svn: 139126
 2011-09-05 23:25:16 +00:00
Benjamin Kramer
ec933b857e InstSimplify: Don't try to replace an extractvalue/insertvalue pair with the original value if types don't match. 
Fixes clang selfhost.

llvm-svn: 139120
 2011-09-05 18:16:19 +00:00
Duncan Sands
a74d10bb60 Add some simple insertvalue simplifications, for the purpose of cleaning 
up do-nothing exception handling code produced by dragonegg.

llvm-svn: 139113
 2011-09-05 06:52:48 +00:00
Benjamin Kramer
0c1a5d2067 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.

llvm-svn: 139110
 2011-09-04 23:53:04 +00:00
Andrew Trick
43d88c3879 Comment and clarifying assert. 
llvm-svn: 139036
 2011-09-02 21:20:46 +00:00
Devang Patel
26f7aeed7c After r138010, subroutine type does not have context info. Update type verifier accordingly. 
This fixes ptype.exp gdb testsuite regressions.

llvm-svn: 138869
 2011-08-31 18:04:31 +00:00
Nadav Rotem
43912ff374 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.

llvm-svn: 138756
 2011-08-29 19:58:36 +00:00
Andrew Trick
026fa4da72 Reapply r138695. Fix PassManager stack depths. 
Patch by Xiaoyi Guo!

llvm-svn: 138737
 2011-08-29 17:07:00 +00:00
Nadav Rotem
6280c8eecc Bitcasts are transitive. Bitcast-Bitcast-X becomes Bitcast-X. 
llvm-svn: 138722
 2011-08-28 11:51:08 +00:00
Andrew Trick
65754eb3f7 Reverting r138695 to see if it fixes clang self host. 
llvm-svn: 138701
 2011-08-27 06:10:16 +00:00
Andrew Trick
e38568bc07 Fix PassManager stack depths. 
Patch by Xiaoyi Guo!

llvm-svn: 138695
 2011-08-27 02:11:03 +00:00
Eric Christopher
09fd6a961c Whitespace and 80-col. 
llvm-svn: 138654
 2011-08-26 21:02:40 +00:00
Andrew Trick
504187a152 LoopInfo::updateUnloop fix, and verify Block->Loop maps. 
Fixes an oversight, and adds verification to catch it in the unloop.ll tests.

llvm-svn: 138622
 2011-08-26 03:06:34 +00:00
Bill Wendling
15062f817a Skip the landingpad instruction when determining the insertion point. 
llvm-svn: 138481
 2011-08-24 21:06:46 +00:00
Nadav Rotem
43673d6d0b Implement Constant::isAllOnesValue(). Fix ConstantFolding to use the new api. 
llvm-svn: 138469
 2011-08-24 20:18:38 +00:00
Eric Christopher
aa4993b9aa Revert "Address Duncan's CR request:" 
This reverts commit 20a05be15ea5271ab6185b83200fa88263362400. (svn rev 138340)

Conflicts:

	test/Transforms/InstCombine/bitcast.ll

llvm-svn: 138366
 2011-08-23 20:11:10 +00:00
Nadav Rotem
d449bc9bff Address Duncan's CR request: 
1. Cleanup the tests in ConstantFolding.cpp
2. Implement isAllOnes for Constant, ConstantFP, ConstantVector

llvm-svn: 138340
 2011-08-23 17:48:43 +00:00
Nadav Rotem
1dc1eb1ae0 Add constant folding support for bitcasts of splat vectors to integers. 
llvm-svn: 138206
 2011-08-20 14:02:29 +00:00
Devang Patel
e4127d626e 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. 
llvm-svn: 138145
 2011-08-19 23:28:12 +00:00
Benjamin Kramer
0d60a5573c Make a bunch of symbols private. 
llvm-svn: 138025
 2011-08-19 01:42:18 +00:00
Benjamin Kramer
c5a90f3683 C API functions must be able to see their extern "C" definitions, or it will be impossible to call them from C. 
llvm-svn: 138022
 2011-08-19 01:36:54 +00:00
Devang Patel
9fa42d022b There is no need to add file as context for subroutine type. The subroutine type does not need any context. 
llvm-svn: 138010
 2011-08-18 23:50:57 +00:00
Bill Wendling
3566980062 Revert r137655. There is some question about whether the 'landingpad' 
instruction should be marked as potentially reading and/or writing memory.

llvm-svn: 137863
 2011-08-17 20:36:44 +00:00
Eli Friedman
6da9a85aaa Revert r137781; I agree with Duncan's comment that the situation in question is clearly impossible given the current structure of the code. 
llvm-svn: 137853
 2011-08-17 19:31:49 +00:00
Eli Friedman
fc821baad4 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. 
llvm-svn: 137781
 2011-08-16 22:38:34 +00:00
Devang Patel
630d8ce36b 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. 
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.

llvm-svn: 137778
 2011-08-16 22:09:43 +00:00
Bill Wendling
3d7b8eaa78 Use the getFirstInsertionPt() method instead of getFirstNonPHI + an 'isa<>' 
check for a LandingPadInst.

llvm-svn: 137745
 2011-08-16 20:45:24 +00:00
Bill Wendling
3e159bd43d A few places where we want to skip the landingpad instruction for insertion. 
llvm-svn: 137712
 2011-08-16 04:52:55 +00:00
Devang Patel
f1b61abc8c Add a finalize() hook, that'll let DIBuilder construct compile unit lazily. 
llvm-svn: 137673
 2011-08-15 23:00:00 +00:00
Eli Friedman
a88908f4e7 Add some comments here because the lack of a check for volatile/atomic here is a bit unusual. 
llvm-svn: 137662
 2011-08-15 21:56:39 +00:00
Bill Wendling
a75d2d0416 Duncan pointed out that the LandingPadInst might read memory. (It might also 
write to memory.) Marking it as such makes some checks for immobility go away.

llvm-svn: 137655
 2011-08-15 21:14:31 +00:00