Add some uncovered attribute tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186538 91177308-0d34-0410-b5e6-96231b3b80d8
Handle '.' correctly in hex float literal parsing.

There were a couple of different loops that were not handling
'.' correctly in APFloat::convertFromHexadecimalString; these mistakes
could lead to assertion failures and incorrect rounding for overlong
hex float literals.

Fixes PR16643.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186539 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186541 91177308-0d34-0410-b5e6-96231b3b80d8
Add an explicit operator bool conversion to DIDescriptor to make
it clear what we want to do. Unfortunately the conversion to
pointer operator fires now instead and chasing down all of the
conversions and making them explicit and handled is a large task
so add a FIXME with it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186543 91177308-0d34-0410-b5e6-96231b3b80d8
Add comparison operators for DIDescriptors to fix c++98 fallout
of operator bool change.

Also convert a variable in DebugIR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186544 91177308-0d34-0410-b5e6-96231b3b80d8
PPC: Add base-pointer support to builtin setjmp/longjmp

First, this changes the base-pointer implementation to remove an unnecessary
complication (and one that is incompatible with how builtin SjLj is
implemented): instead of using r31 as the base pointer when it is not needed as
a frame pointer, now the base pointer will always be r30 when needed.

Second, we introduce another pseudo register, BP, which is used just like the FP
pseudo register to refer to the base register before we know for certain what
register it will be.

Third, we now save BP into the jmp_buf, and restore r30 from that slot in
longjmp.  If the function that called setjmp did not use a base pointer, then
r30 will be overwritten by the setjmp-calling-function's restore code. FP
restoration (which is restored into r31) works the same way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186545 91177308-0d34-0410-b5e6-96231b3b80d8
Update comment slightly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186548 91177308-0d34-0410-b5e6-96231b3b80d8
Get rid of the Dis/EnableDebugLocations() API.
I'm moving this functionality into clang instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186549 91177308-0d34-0410-b5e6-96231b3b80d8
Give 'hasPath' a longer but clearer name 'isPotentiallyReachable'. Also expand
the comment. No functionality change. This change broken out of
http://llvm-reviews.chandlerc.com/D996 .


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186558 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a regression I introduced back in r178147.

We don't want cast and dyn_cast to work on temporaries. They don't extend
lifetime like a direct bind to a reference would, so they can introduce
hard to find bugs.

I added tests to make sure we don't regress this. Thanks to Eli Friedman for
noticing this and for his suggestions on how to test it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186559 91177308-0d34-0410-b5e6-96231b3b80d8
Convert two uses if fstat with sys::fs::status.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186560 91177308-0d34-0410-b5e6-96231b3b80d8
Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186561 91177308-0d34-0410-b5e6-96231b3b80d8
PPC: Support dynamic allocas with large alignment

Support for dynamic stack alignments in the PPC backend has been unfinished, in
part because it depends on dynamic stack realignment (which I only just
recently implemented fully). Now we can also support dynamic allocas with
higher than the default target stack alignment (16 bytes).

In order to round-up the requested size to the maximum requested alignment, we
need an additional register to hold the rounded-up size. We're already using one
scavenged register to hold the previous stack-pointer value (which needs to be
stored with the signal-safe stdux update), and so when we have dynamic allocas
and a large alignment, we allocate two emergency spill slots for the scavenger.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186562 91177308-0d34-0410-b5e6-96231b3b80d8
SLPVectorizer: Speedup isConsecutive (that checks if two addresses are consecutive in memory) by checking for additional patterns that don't need to go through SCEV.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186563 91177308-0d34-0410-b5e6-96231b3b80d8
Reapply r186316 with a fix for one bug where the code could walk off the
end of a vector. This was found with ASan. I've had one other report of
a crasher, but thus far been unable to reproduce the crash. It may well
be fixed with this version, and if not I'd like to get more information
from the build bots about what is happening.

See r186316 for the full commit log for the new implementation of the
SROA algorithm.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186565 91177308-0d34-0410-b5e6-96231b3b80d8
Fix copy and paste bug from r186491 to make v2f64 use MOVAPD/MOVUPD as it should.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186566 91177308-0d34-0410-b5e6-96231b3b80d8
This patch extends mips register parsing methods to allow indexed register parsing. The corresponding test cases are added to the patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186567 91177308-0d34-0410-b5e6-96231b3b80d8
Remove the extra leading 0 from VMAXNMND.
The N3VDIntnp pattern takes bits<5> and I gave it 6 bits.

Thanks to Jiangning Liu for spotting it!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186568 91177308-0d34-0410-b5e6-96231b3b80d8
[SystemZ] Rename and formatting fixes

In hindsight, using "RISBG" for something that can be any type of
R.SBG instruction was a bit confusing, so this renames it to RxSBG.
That might not be the best choice either, since there is an instruction
called RXSBG, but hopefully the lower-case letter stands out enough.

While there I fixed a couple of GNUisms that had crept in --
sorry about that!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186569 91177308-0d34-0410-b5e6-96231b3b80d8
[SystemZ] Use RXSBG

Extend the previous R.SBG patches to handle XORs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186570 91177308-0d34-0410-b5e6-96231b3b80d8