Summary:
Actually Fuchsia non-support for interceptors. Fuchsia doesn't use
interceptors in the common sense at all. Almost all system library
functions don't need interception at all, because the system
libraries are just themselves compiled with sanitizers enabled and
have specific hook interfaces where needed to inform the sanitizer
runtime about thread lifetimes and the like. For the few functions
that do get intercepted, they don't use a generic mechanism like
dlsym with RTLD_NEXT to find the underlying system library function.
Instead, they use specific extra symbol names published by the
system library (e.g. __unsanitized_memcpy).
Submitted on behalf of Roland McGrath.
Reviewers: vitalybuka, alekseyshl, kcc, filcab
Reviewed By: filcab
Subscribers: kubamracek, phosek, filcab, llvm-commits
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D36028
llvm-svn: 309745
The previous attempt, which made do with a single offset in
computeCalleeSaveRegisterPairs, wasn't quite enough. The previous
attempt only worked as long as CombineSPBump == true (since the
offset would be adjusted later in fixupCalleeSaveRestoreStackOffset).
Instead include the size for the fixed stack area used for win64
varargs in calculations in emitPrologue/emitEpilogue. The stack
consists of mainly three parts;
- AFI->getLocalStackSize()
- AFI->getCalleeSavedStackSize()
- FixedObject
Most of the places in the code which previously used the CSStackSize
now use PrologueSaveSize instead, which is the sum of the latter
two, while some cases which need exactly the middle one use
AFI->getCalleeSavedStackSize() explicitly instead of a local variable.
In addition to moving the offsetting into emitPrologue/emitEpilogue
(which fixes functions with CombineSPBump == false), also set the
frame pointer to point to the right location, where the frame pointer
and link register actually are stored. In addition to the prologue/epilogue,
this also requires changes to resolveFrameIndexReference.
Add tests for a function that keeps a frame pointer and another one
that uses a VLA.
Differential Revision: https://reviews.llvm.org/D35919
llvm-svn: 309744
The src0 register must match src1 or src2, but if these
were undefined they could end up using different implicit_defed
virtual registers. Force these to use one undef vreg or pick the
defined other register.
Also fixes producing invalid nodes without the right number of
inputs when src2 is undef.
llvm-svn: 309743
In a future commit AMDGPU will start passing
aggregates directly to more functions, triggering
asserts in test/CodeGenOpenCL/addr-space-struct-arg.cl
llvm-svn: 309741
The previous algorithm was to search a writes and the sours of its value
operand, and see whether the write just stores the same read value back,
which includes a search whether there is another write access between
them. This is O(n^2) in the max number of accesses in a statement
(+ the complexity of isl comparing the access functions).
The new algorithm is more similar to the one used for searching for
overwrites and coalescable writes. It scans over all accesses in order
of execution while tracking which array elements still have the same
value since it was read. This is O(n), not counting the complexity
within isl. It should be more reliable than trying to catch all
non-conforming cases in the previous approach. It is also less code.
We now also support if the write is a partial write of the read's
domain, and to some extent non-affine subregions.
Differential Revision: https://reviews.llvm.org/D36137
llvm-svn: 309734
Includes a hack to fix the type selected for
the GlobalAddress of the function, which will be
fixed by changing the default datalayout to use
generic pointers for 0.
llvm-svn: 309732
Summary:
We already have information about static alloca stack locations in our
side table. Emitting instructions for them is inefficient, and it only
happens when the address of the alloca has been materialized within the
current block, which isn't often.
Reviewers: aprantl, probinson, dblaikie
Subscribers: jfb, dschuff, sbc100, jgravelle-google, hiraditya, llvm-commits, aheejin
Differential Revision: https://reviews.llvm.org/D36117
llvm-svn: 309729
With a lot of reads and writes to the same array in a statement,
some isl sets that capture the state between access can become
complex such that isl takes more considerable time and memory
for operations on them.
The problems identified were:
- is_subset() takes considerable time with many disjoints in the
arguments. We limit the number of disjoints to 4, any additional
information is thrown away.
- subtract() can lead to many disjoints. We instead assume that any
array element is possibly accessed, which removes all disjoints.
- subtract_domain() may lead to considerable processing, even if all
elements are are to be removed. Instead, we remove determine and
remove the affected spaces manually. No behaviour is changed.
llvm-svn: 309728
r282968 introduced a regression due to the lack of proper testing.
Re-add lax conversion support between non ext vectors for compound
assignments and add a test for that.
rdar://problem/28639467
llvm-svn: 309722
Improves atom scheduler test coverage (to make it easier to upgrade them for PR32431).
Merged SSE_VEC_BIT_ITINS_P + SSE_BIT_ITINS_P as we were interchanging between them.
llvm-svn: 309715
Summary: `throw (...)` should have a whitespace following it, as do await and void.
Reviewers: djasper
Subscribers: klimek, cfe-commits
Differential Revision: https://reviews.llvm.org/D36146
llvm-svn: 309710
Summary: clang-format would previously fail to detect that an arrow functions parameter block is not an expression, and thus insert whitespace around the `|` and `&` type operators in it.
Reviewers: djasper
Subscribers: klimek, cfe-commits
Differential Revision: https://reviews.llvm.org/D36147
llvm-svn: 309707
Summary: The 64-bit 'and' with immediate instruction only supports a 32-bit immediate. So for larger constants we have to load the constant into a register first. If the immediate happens to be a mask we can use the BEXTRI instruction to perform the masking. We already do something similar using the BZHI instruction from the BMI2 instruction set.
Reviewers: RKSimon, spatel
Reviewed By: RKSimon
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D36129
llvm-svn: 309706
Summary: Previously, const enums would get formatted differently because the modifier was not recognized.
Reviewers: djasper
Subscribers: klimek, cfe-commits
Differential Revision: https://reviews.llvm.org/D36144
llvm-svn: 309703
Improves atom scheduler test coverage (to make it easier to upgrade them for PR32431).
Checked on Agner that these actually match the UNPACK schedules, but better to include a separate class
llvm-svn: 309701
This moves all the bmi2 specific intrinsics to a separate test file and adds a bmi1 only command line to the existing bmi test.
This will allow us to see the missed opportunity to use bextr to handle 64-bit 'and' with a large mask. This will be improved in an upcoming patch.
llvm-svn: 309700
Summary: Formerly, `import {default as X} from y;` would not be recognized as an import.
Reviewers: djasper
Subscribers: klimek, cfe-commits
Differential Revision: https://reviews.llvm.org/D36132
llvm-svn: 309697
Summary:
clang-format would previously drop the whitespace after `extends` in code such as:
class Foo extends {} {}
Where the first set of curly braces is an inline object literal type.
Reviewers: djasper
Subscribers: klimek, cfe-commits
Differential Revision: https://reviews.llvm.org/D36131
llvm-svn: 309695
Summary:
FEntryInserter pass unconditionally derefs the first Instruction
in the first Basic Block. The pass crashes when the first
BasicBlock is empty. Fix the crash by not dereferencing the basic
Block iterator. This fixes an issue observed when building Linux kernel
4.4 with clang.
Fixes PR33971.
Reviewers: hfinkel, niravd, dblaikie
Reviewed By: niravd
Subscribers: davide, llvm-commits
Differential Revision: https://reviews.llvm.org/D35979
llvm-svn: 309694
Vitaly Buka