Whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183726 91177308-0d34-0410-b5e6-96231b3b80d8
ARMAsmBackend.cpp: Use Triple::isOSBinFormatCOFF() instead of isOSWindows().

FYI, isOSBinFormatCOFF() is as same as isOSWindows(), on trunk.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183727 91177308-0d34-0410-b5e6-96231b3b80d8
Tweak a couple of tests on win32 hosts with +Asserts.

  - Don't use assert(0), or tests may pass or fail according to assertions.
  - For now, The tests are marked as XFAIL for win32 hosts.

FIXME: Could we avoid XFAIL to specify triple in the RUN lines?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183728 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: Fix STREX/LDREX reecoding

The decoded MCInst wasn't reencoded as the same instruction

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183729 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: Enforce decoding rules for VLDn instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183731 91177308-0d34-0410-b5e6-96231b3b80d8
This patch adds support for FPINST/FPINST2 as operands to vmsr/vmrs. These are optional registers that may be supported some ARM implementations to aid with resolution of floating point exceptions. The manual pages for vmsr and vmrs do not detail their use. Encodings and other information can be found in ARM Architecture Reference Manual section F, chapter 6, paragraph 3.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183733 91177308-0d34-0410-b5e6-96231b3b80d8
It adds support for negative zero offsets for loads and stores.
Negative zero is returned by the primary expression parser as INT32_MIN, so all that the method needs to do is to accept this value.
Behavior already present for Thumb2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183734 91177308-0d34-0410-b5e6-96231b3b80d8
Rework r183728, suppress assert(0) for now. Its behavior depends on assertions on win32 hosts.

FIXME: Introduce yet another checker but assert(0).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183736 91177308-0d34-0410-b5e6-96231b3b80d8
Require members of llvm.used to be named.

The effect of llvm.used is to introduce an invisible reference, so this seems
a reasonable restriction. It will be used to provide an easy ordering of
the entries in llvm.used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183743 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Make helper functions static.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183744 91177308-0d34-0410-b5e6-96231b3b80d8
Convert a use of sys::identifyFileType to sys::fs::identify_magic.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183745 91177308-0d34-0410-b5e6-96231b3b80d8
Convert another use of sys::identifyFileType.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183746 91177308-0d34-0410-b5e6-96231b3b80d8
Convert another use of sys::identifyFileType.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183747 91177308-0d34-0410-b5e6-96231b3b80d8
Fix variable name style. Don't cast to and from int.

This enables the compiler to see the enum and produce warnings about a switch
not being fully covered. Fix one of these warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183749 91177308-0d34-0410-b5e6-96231b3b80d8
Fix variable name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183752 91177308-0d34-0410-b5e6-96231b3b80d8
Port r183666 to identify_magic.

It will be tested in the next commit which moves another user to identify_magic.

Original message:

Fix an out of bounds array access.

We were looking at Magic[5] without checking Length. Since this path would not
return unless Length >= 18 anyway, just move the >= 18 check up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183753 91177308-0d34-0410-b5e6-96231b3b80d8
Convert another use of sys::identifyFileType.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183754 91177308-0d34-0410-b5e6-96231b3b80d8
Change how globalopt handles aliases in llvm.used.

Instead of a custom implementation of replaceAllUsesWith, we just call
replaceAllUsesWith and recreate llvm.used and llvm.compiler-used.

This change is particularity interesting because it makes llvm see
through what clang is doing with static used functions in extern "C"
contexts. With this change, running clang -O2 in

extern "C" {
  __attribute__((used)) static void foo() {}
}

produces

@llvm.used = appending global [1 x i8*] [i8* bitcast (void ()* @foo to
i8*)], section "llvm.metadata"
define internal void @foo() #0 {
entry:
  ret void
}

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183756 91177308-0d34-0410-b5e6-96231b3b80d8
Convert another use of sys::identifyFileType.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183758 91177308-0d34-0410-b5e6-96231b3b80d8
Convert another use of sys::identifyFileType.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183759 91177308-0d34-0410-b5e6-96231b3b80d8