Patch by Taewook Oh
Summary: Patch for Bug 27478. Make BasicAliasAnalysis claims NoAlias if two GEPs index different fields of the same structure.
Reviewers: hfinkel, dberlin
Subscribers: dberlin, mcrosier, llvm-commits
Differential Revision: http://reviews.llvm.org/D20665
llvm-svn: 271415
Summary:
Re-enable lifetime-start-on-first-use for stack coloring,
but explicitly disable it for slots with more than one start
or end lifetime marker.
Bug: 27903
Reviewers: wmi, tejohnson, qcolombet, gbiv
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D20739
llvm-svn: 271412
Previously, whenever we needed a vector IV, we would create it on the fly,
by splatting the scalar IV and adding a step vector. Instead, we can create a
real vector IV. This tends to save a couple of instructions per iteration.
This only changes the behavior for the most basic case - integer primary
IVs with a constant step.
Differential Revision: http://reviews.llvm.org/D20315
llvm-svn: 271410
It's possible to have multiple local ObjCLifetime qualifiers. When there is
a conflict, we can't stop after we reach a type that is directly qualified.
We need to keep pulling sugar off and removing the ObjCLifetime qualifers.
rdar://25804796
Differential Revision: http://reviews.llvm.org/D20843
llvm-svn: 271409
Summary:
This is meant to be the tiniest step towards DIType to CV type index
translation that I could come up with. Whenever translation fails, we use type
index zero, which is the unknown type.
Reviewers: aaboud, zturner
Subscribers: llvm-commits, amccarth
Differential Revision: http://reviews.llvm.org/D20840
llvm-svn: 271408
Summary:
Change some of the internal interfaces in Loads.cpp to keep track of the
number of bytes we're trying to prove dereferenceable using an explicit
`Size` parameter.
Before this, the `Size` parameter was implicitly inferred from the
pointee type of the pointer whose dereferenceability we were trying to
prove, causing us to be conservative around bitcasts. This was
unfortunate since bitcast instructions are no-ops and should never
break optimizations. With an explicit `Size` parameter, we're more
precise (as shown in the test cases), and the code is simpler.
We should eventually move towards a `DerefQuery` struct that groups
together a base pointer, an offset, a size and an alignment; but this
patch is a first step.
Reviewers: apilipenko, dblaikie, hfinkel, reames
Subscribers: mcrosier, llvm-commits
Differential Revision: http://reviews.llvm.org/D20764
llvm-svn: 271406
Patch implements next relaxation from latest ABI:
"Convert memory operand of test and binop into immediate operand, where binop is one of adc, add, and, cmp, or,
sbb, sub, xor instructions, when position-independent code is disabled."
It is described in System V Application Binary Interface AMD64 Architecture Processor
Supplement Draft Version 0.99.8 (https://github.com/hjl-tools/x86-psABI/wiki/x86-64-psABI-r249.pdf,
B.2 "B.2 Optimize GOTPCRELX Relocations").
Differential revision: http://reviews.llvm.org/D20793
llvm-svn: 271405
When we undefine, we also preserve type of symbol so that we get
it right in the combined LTO object.
Differential Revision: http://reviews.llvm.org/D20851
llvm-svn: 271403
Summary:
It isn't clear what is the operational meaning of loading or storing an
unsized types, since it cannot be lowered into something meaningful.
Since there does not seem to be any practical need for it either, make
such loads and stores illegal IR.
Reviewers: majnemer, chandlerc
Subscribers: mcrosier, llvm-commits
Differential Revision: http://reviews.llvm.org/D20846
llvm-svn: 271402
Summary: ASI did not handle the ES6 `as` operator correctly.
Reviewers: djasper
Subscribers: klimek, cfe-commits
Differential Revision: http://reviews.llvm.org/D20817
llvm-svn: 271401
Summary: added PathConfig.cpp and use includer of .inc header to be the file path of a symbol from .inc header.
Reviewers: bkramer
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D20855
llvm-svn: 271385
This adds an additional matcher to select UBFX(..) from SRL(AND(..)) in
ARMISelDAGToDAG to help with code size.
Patch by David Green.
Differential Revision: http://reviews.llvm.org/D20667
llvm-svn: 271384
Summary:
And some improvements:
* Show better error messages on unfound symbols.
* Fix a typo.
Reviewers: bkramer
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D20827
llvm-svn: 271382
As I replaced no-op TCR_4 with actual code, compiler complained while building debug build.
This patch moves 'cast to int' to the correct place.
Extension to Differential Revision: http://reviews.llvm.org/D19880
llvm-svn: 271377
The `isa' member was previously not given the correct DLL Storage. Ensure that
we give the `isa' constant `__CFConstantStringClassReference' the correct DLL
storage. Default to dllimport unless an explicit specification gives it a
dllexport storage.
llvm-svn: 271361
This will be necessary to allow the global merge pass to attach
multiple debug info metadata nodes to global variables once we reverse
the edge from DIGlobalVariable to GlobalVariable.
Differential Revision: http://reviews.llvm.org/D20414
llvm-svn: 271358
This should have been converting the size to bytes, but wasn't really.
These should probably all be using getStoreSize instead.
I haven't been able to come up with a meaningful testcase for this.
I can trigger it using combinations of struct loads and stores,
but can't observe a difference in non-broken testcases.
isAlias is only really used during store merging, so I'm not sure how
to get into the vector splitting situation the comment describes
since store merging is only done before type legalization.
llvm-svn: 271356
Daniel Berlin