These are byte shift instructions and it will make shuffle combining a lot more straightforward if we can assume a vXi8 vector of bytes so decoded shuffle masks match the return type's number of elements
llvm-svn: 272468
The 'Color' enum is only used for irreducible control flow detection. Johannes
already moved this enum in r270054 from ScopDetection.h to ScopDetection.cpp to
limit its scope to a single cpp file. We now move it into the only function
where this enum is needed to make clear that it is only needed locally in this
single function.
Thanks to Johannes for pointing out this cleanup opportunity.
llvm-svn: 272462
This shouldn't have any functional difference, but it appears to be the
pattern used for other methods on DynamicLibrary, and it should avoid
the -Wpedantic warning on one of the build bots about the direct
reinterpret_cast.
llvm-svn: 272461
MCJIT will now set the DataLayout on a module when it is added to the JIT,
rather than waiting until it is codegen'd, and the runFunction method will
finalize the module containing the function to be run before running it.
The fibonacci example has been updated to include and link against MCJIT.
llvm-svn: 272455
Visualizers for DeclAccessPair, UnresolvedSet, and LookupResult. For example,
when combined with LLVM diff D21256 (currently in review), a Lookup set will
show much more naturally in the Locals window something like
Found: {public typename ...Ts}
llvm-svn: 272448
We shouldn't return true from CheckSpecifiedExceptionType if
the record type is incomplete and -fms-extensions is engaged. Otherwise
we will have an incomplete AST.
llvm-svn: 272447
undef uses are no real uses of a register and must be ignored by
findLastUseBefore() so that handleMove() does not produce invalid live
intervals in some cases.
This fixed http://llvm.org/PR28083
llvm-svn: 272446
Summary:
I haven't added it to all the tests, just those that fail without it
(those that aren't header only).
Reviewers: EricWF, mclow.lists
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D21247
llvm-svn: 272443
Summary:
Iterates all (except the first and the last) operands within each GEP
instruction for instrumentation.
Adds test struct_field_gep.ll.
Reviewers: aizatsky
Subscribers: vitalybuka, zhaoqin, kcc, eugenis, bruening, llvm-commits
Differential Revision: http://reviews.llvm.org/D21242
llvm-svn: 272442
Summary:
I can't find a case where we can rotate a loop more than once, and it looks
like we never do this. To rotate a loop following conditions should be met:
1) its header should be exiting
2) its latch shouldn't be exiting
But after the first rotation the header becomes the new latch, so this
condition can never be true any longer.
Tested on with an assert on LNT testsuite and make check.
Reviewers: hfinkel, sanjoy
Subscribers: sebpop, sanjoy, llvm-commits, mzolotukhin
Differential Revision: http://reviews.llvm.org/D20181
llvm-svn: 272439
This fixes an alignment issue by forcing all cached allocations
to be 8 byte aligned, and also fixes an issue arising on big
endian systems by writing ulittle32_t's instead of uint32_t's
in the test.
llvm-svn: 272437
A memory access defined on function entry cannot be locally dominated by another memory access.
The patch was split from http://reviews.llvm.org/D19338 which exposes the problem.
Differential Revision: http://reviews.llvm.org/D21039
llvm-svn: 272436
Prior to this we would display the typename for "TestObj<-1>" as "TestObj<4294967295>" when we showed the type. Expression parsing could also fail because we would fail to find the mangled name when evaluating expressions.
The issue was we were losing the signed'ness of the template integer parameter in DWARFASTParserClang.cpp.
<rdar://problem/25577041>
llvm-svn: 272434
Summary:
When stack-protection is activated and WinEH exceptions is used,
the EHRegNode (exception handling registration) is allocated twice on the stack.
This was not breaking anything except loosing space on the stack.
```
D:\src\llvm\examples>llc exc2.ll -debug-only=pei
alloc FI(0) at SP[-24]
alloc FI(1) at SP[-48] <<-- Allocated
alloc FI(1) at SP[-72] <<-- Allocated twice!?
alloc FI(2) at SP[-76]
alloc FI(4) at SP[-80]
alloc FI(3) at SP[-84]
```
Reviewers: rnk, majnemer
Subscribers: chrisha, llvm-commits
Differential Revision: http://reviews.llvm.org/D21188
llvm-svn: 272426
The code had a typo it was doing:
Param->setUninstantiatedDefaultArg(Param->getUninstantiatedDefaultArg());
This is a no-op but may assert, we wanted to do:
Param->setUninstantiatedDefaultArg(OldParam->getUninstantiatedDefaultArg());
This fixes PR28082.
llvm-svn: 272425
GCC still permits enabling the SjLj EH model. This is something which can be
done on various targets. Hoist the -fsjlj-exceptions option into the driver and
pass it through. This allows one to opt into the alternative EH model while
retaining the default to be the target's default.
Resolves PR27749!
llvm-svn: 272424
Loop unswitching may cause MSan false positive when the unswitch
condition is not guaranteed to execute.
This is very similar to ASan and TSan special case in
llvm::isSafeToSpeculativelyExecute (they don't like speculative loads
and stores), but for branch instructions.
This is a workaround for PR28054.
llvm-svn: 272421
Support and generate Compare and Traps like CRT, CIT, etc.
Support Trap as legal DAG opcodes and generate "j .+2" for them by default.
Add support for Conditional Traps and use the If Converter to convert them into
the corresponding compare and trap opcodes.
Differential Revision: http://reviews.llvm.org/D21155
llvm-svn: 272419
Simon Pilgrim