DwarfCompileUnit: Push DIDescriptor usage out from isShareableAcrossCUs

This is the first of a few similar patches. We'll see how far it
goes/makes sense.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194871 91177308-0d34-0410-b5e6-96231b3b80d8
Fix previous commit (r194865)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194874 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfCompileUnit: Push DIDescriptors through a getDIE/insertDIE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194875 91177308-0d34-0410-b5e6-96231b3b80d8
LoopVectorizer: Use abi alignment for accesses with no alignment

When we vectorize a scalar access with no alignment specified, we have to set
the target's abi alignment of the scalar access on the vectorized access.
Using the same alignment of zero would be wrong because most targets will have a
bigger abi alignment for vector types.

This probably fixes PR17878.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194876 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfDebug: Push DISubprogram through updateSubprogramScopeDIE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194879 91177308-0d34-0410-b5e6-96231b3b80d8
During folding for patchpoint/stackmap instructions, defer creation of new MIs
until we know that folding will be successful.

No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194880 91177308-0d34-0410-b5e6-96231b3b80d8
Remove unused arguments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194882 91177308-0d34-0410-b5e6-96231b3b80d8
Replace the dangling context hotfix with an assertion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194883 91177308-0d34-0410-b5e6-96231b3b80d8
Implemented aarch64 Neon scalar vmulx_lane intrinsics
Implemented aarch64 Neon scalar vfma_lane intrinsics
Implemented aarch64 Neon scalar vfms_lane intrinsics

Implemented legacy vmul_n_f64, vmul_lane_f64, vmul_laneq_f64
intrinsics (v1f64 parameter type) using Neon scalar instructions.

Implemented legacy vfma_lane_f64, vfms_lane_f64,
vfma_laneq_f64, vfms_laneq_f64 intrinsics (v1f64 parameter type)
using Neon scalar instructions.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194888 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfCompileUnit: Simplify getLanguage() calls to use existing member function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194892 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfCompileUnit: Add type safety by using DICompileUnit rather than raw MDNode* for the CU metadata node

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194893 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfCompileUnit: Add type safety to CompileUnit::getNode by returning DICompileUnit instead of a raw MDNode*.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194895 91177308-0d34-0410-b5e6-96231b3b80d8