Revert r213070. It's breaking the build in MCELFStreamer::EmitInstToData(...).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213073 91177308-0d34-0410-b5e6-96231b3b80d8
[AArch64] Add negative tests for the SIMD & FP LDP instructions.

LDP is unpredictable if the registers in the pair are identical, these tests check that we don't assemble instructions like that and error out instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213074 91177308-0d34-0410-b5e6-96231b3b80d8
[RegisterCoalescer] Add new subtarget hook allowing targets to opt-out of coalescing.

The coalescer is very aggressive at propagating constraints on the register classes, and the register allocator doesn’t know how to split sub-registers later to recover. This patch provides an escape valve for targets that encounter this problem to limit coalescing.

This patch also implements such for ARM to lower register pressure when using lots of large register classes. This works around PR18825.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213078 91177308-0d34-0410-b5e6-96231b3b80d8
ADT: Add "end namespace" comment

This keeps clang-format from deleting the preceding newline.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213082 91177308-0d34-0410-b5e6-96231b3b80d8
ADT: Fix MapVector::erase()

Actually update the changed indexes in the map portion of `MapVector`
when erasing from the middle.  Add a unit test that checks for this.

Note that `MapVector::erase()` is a linear time operation (it was and
still is).  I'll commit a new method in a moment called
`MapVector::remove_if()` that deletes multiple entries in linear time,
which should be slightly less painful.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213084 91177308-0d34-0410-b5e6-96231b3b80d8
[RuntimeDyld] Revert r211652 - MachO object GDB registration support.

The registration scheme used in r211652 violated the read-only contract of
MemoryBuffer. This caused crashes in llvm-rtdyld where macho objects were backed
by read-only mmap'd memory.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213086 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Remove intrinsics that appear to be unused

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213087 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add predicate for UnsafeFPMath

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213088 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Implement less wrong f32 fdiv

Assuming single precision denormals and accurate sqrt/div are not
reported, this passes the OpenCL conformance test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213089 91177308-0d34-0410-b5e6-96231b3b80d8
ADT: Add MapVector::remove_if

Add a `MapVector::remove_if()` that erases items in bulk in linear time,
as opposed to quadratic time for repeated calls to `MapVector::erase()`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213090 91177308-0d34-0410-b5e6-96231b3b80d8
CMake: fix cross-compilation with external source directories

This adds support for building native artifacts when cross-compiling using the
popular side-by-side source directory layout (no symlinks, no nested
repositories).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213091 91177308-0d34-0410-b5e6-96231b3b80d8
Try out FileCheck's new (in r212810) -implicit-check-not in a DebugInfo test.

Just tried this on a few tests and this was the only one that was
easily ported to use the new feature, so we'll go with that for now.
Hopefully can act as inspiration/reminder for other tests.

Not all debug info tests need to check for every DW_TAG or NULL child
terminator, but perhaps they should (just to ensure they don't accidentally
end up with tags nested inside other tags without the test failing, for example)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213092 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Fix select on i1

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213096 91177308-0d34-0410-b5e6-96231b3b80d8
CMake: avoid a reconfigure loop from r213091

Removing the native CMakeCache.txt causes the target to get re-run needlessly
on some systems. We'll want another solution for that part of the fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213099 91177308-0d34-0410-b5e6-96231b3b80d8
[dfsan] Introduce further optimization to reduce the number of union queries.

Specifically, do not compute a union if it is statically known that one
shadow set subsumes the other.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213100 91177308-0d34-0410-b5e6-96231b3b80d8
Move Post RA Scheduling flag bit into SchedMachineModel

Refactoring; no functional changes intended

    Removed PostRAScheduler bits from subtargets (X86, ARM).
    Added PostRAScheduler bit to MCSchedModel class.
    This bit is set by a CPU's scheduling model (if it exists).
    Removed enablePostRAScheduler() function from TargetSubtargetInfo and subclasses.
    Fixed the existing enablePostMachineScheduler() method to use the MCSchedModel (was just returning false!).
    Added methods to TargetSubtargetInfo to allow overrides for AntiDepBreakMode, CriticalPathRCs, and OptLevel for PostRAScheduling.
    Added enablePostRAScheduler() function to PostRAScheduler class which queries the subtarget for the above values.
    Preserved existing scheduler behavior for ARM, MIPS, PPC, and X86: 
       a. ARM overrides the CPU's postRA settings by enabling postRA for any non-Thumb or Thumb2 subtarget. 
       b. MIPS overrides the CPU's postRA settings by enabling postRA for everything. 
       c. PPC overrides the CPU's postRA settings by enabling postRA for everything. 
       d. X86 is the only target that actually has postRA specified via sched model info.

Differential Revision: http://reviews.llvm.org/D4217


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213101 91177308-0d34-0410-b5e6-96231b3b80d8
X86: Simplify X86WindowsTargetObjectFile::getSectionForConstant

There exists a helper function to abstract away the various differences
between ConstantVector, ConstantDataVector, ConstantAggregateZero, etc.

Use it to simplify X86WindowsTargetObjectFile::getSectionForConstant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213104 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Allow using f32 rcp / rsq when denormals not handled.

These are precise enough to use for OpenCL unless denormals
are handled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213107 91177308-0d34-0410-b5e6-96231b3b80d8
Remove TLI from isInTailCallPosition's arguments. NFC.

There is no need to pass on TLI separately to the function. As Eric pointed out
the Target Machine already provides everything we need.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213108 91177308-0d34-0410-b5e6-96231b3b80d8
Emit warnings if vectorization is forced and fails.

This patch modifies the existing DiagnosticInfo system to create a generic base
class that is inherited to produce diagnostic-based warnings. This is used by
the loop vectorizer to trigger a warning when vectorization is forced and
fails. Several tests have been added to verify this behavior.

Reviewed by: Arnold Schwaighofer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213110 91177308-0d34-0410-b5e6-96231b3b80d8