Don't vectorize when the attribute NoImplicitFloat is used.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187340 91177308-0d34-0410-b5e6-96231b3b80d8
Teach the AllocaPromoter which is wrapped around the SSAUpdater
infrastructure to do promotion without a domtree the same smarts about
looking through GEPs, bitcasts, etc., that I just taught mem2reg about.
This way, if SROA chooses to promote an alloca which still has some
noisy instructions this code can cope with them.

I've not used as principled of an approach here for two reasons:
1) This code doesn't really need it as we were already set up to zip
   through the instructions used by the alloca.
2) I view the code here as more of a hack, and hopefully a temporary one.

The SSAUpdater path in SROA is a real sore point for me. It doesn't make
a lot of architectural sense for many reasons:
- We're likely to end up needing the domtree anyways in a subsequent
  pass, so why not compute it earlier and use it.
- In the future we'll likely end up needing the domtree for parts of the
  inliner itself.
- If we need to we could teach the inliner to preserve the domtree. Part
  of the re-work of the pass manager will allow this to be very powerful
  even in large SCCs with many functions.
- Ultimately, computing a domtree has gotten significantly faster since
  the original SSAUpdater-using code went into ScalarRepl. We no longer
  use domfrontiers, and much of domtree is lazily done based on queries
  rather than eagerly.
- At this point keeping the SSAUpdater-based promotion saves a total of
  0.7% on a build of the 'opt' tool for me. That's not a lot of
  performance given the complexity!

So I'm leaving this a bit ugly in the hope that eventually we just
remove all of this nonsense.

I can't even readily test this because this code isn't reachable except
through SROA. When I re-instate the patch that fast-tracks allocas
already suitable for promotion, I'll add a testcase there that failed
before this change. Before that, SROA will fix any test case I give it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187347 91177308-0d34-0410-b5e6-96231b3b80d8
test commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187348 91177308-0d34-0410-b5e6-96231b3b80d8
Allow generation of vmla.f32 instructions when targeting Cortex-A15. The patch also adds the VFP4 feature to Cortex-A15 and fixes the DontUseFusedMAC predicate so that we can still generate vmla.f32 instructions on non-darwin targets with VFP4.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187349 91177308-0d34-0410-b5e6-96231b3b80d8
Some Intel Penryn CPUs come with SSE4 disabled. Detect them as core 2.

PR16721.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187350 91177308-0d34-0410-b5e6-96231b3b80d8
ExceptionDemo.cpp: Tweak a @param. [-Wdocumentation]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187351 91177308-0d34-0410-b5e6-96231b3b80d8
MC: Support larger COFF string tables

Single-slash encoded entries do not require a terminating null. This bumps
the maximum table size from ~1MB to ~9.5MB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187352 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for the 's' operation to llvm-ar.

If no other operation is specified, 's' becomes an operation instead of an
modifier. The s operation just creates a symbol table. It is the same as
running ranlib.

We assume the archive was created by a sane ar (like llvm-ar or gnu ar) and
if the symbol table is present, then it is current. We use that to optimize
the most common case: a broken build system that thinks it has to run ranlib.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187353 91177308-0d34-0410-b5e6-96231b3b80d8
Re-application of 187310.  Re-enabling warning C4275 for MSVC 11 and up, but not MSVC 10 since it is still required there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187354 91177308-0d34-0410-b5e6-96231b3b80d8
Proper va_arg/va_copy lowering on win64

Win64 uses CharPtrBuiltinVaList instead of X86_64ABIBuiltinVaList like
other 64-bit targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187355 91177308-0d34-0410-b5e6-96231b3b80d8
Use proper section suffix for COFF weak symbols

32-bit symbols have "_" as global prefix, but when forming the name of
COMDAT sections this prefix is ignored. The current behavior assumes that
this prefix is always present which is not the case for 64-bit and names
are truncated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187356 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: update testing cases to pass verifier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187362 91177308-0d34-0410-b5e6-96231b3b80d8
SLPVectorier: update the debug location for the new instructions.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187363 91177308-0d34-0410-b5e6-96231b3b80d8
Add the C source code to the test to make it easier to update when debug info changes.
Thanks Eric.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187368 91177308-0d34-0410-b5e6-96231b3b80d8
[mips] Add comment and simplify function.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187371 91177308-0d34-0410-b5e6-96231b3b80d8
Debug Info: enable verifier for testing cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187375 91177308-0d34-0410-b5e6-96231b3b80d8
Include st_dev to make the result of getUniqueID actually unique.

This will let us use getUniqueID instead of st_dev directly on clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187378 91177308-0d34-0410-b5e6-96231b3b80d8
Delete documentation for deleted options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187380 91177308-0d34-0410-b5e6-96231b3b80d8
Make file_status::getUniqueID const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187383 91177308-0d34-0410-b5e6-96231b3b80d8
Elaborate a bit on the type unit and ODR conditional code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187385 91177308-0d34-0410-b5e6-96231b3b80d8