twice and just look up the value. Fix the one case where
we were trying to create a subprogram DIE and we should already
have had one. Reflow formatting in collectDeadVariables while fixing.

llvm-svn: 192749

and remove a call to getNonCompileUnitScope as a method
shouldn't be in the compile unit scope.

llvm-svn: 192748

llvm-svn: 192747

llvm-svn: 192745

Also minor using namespace move so it's not hard-up against the function
definition and outside the namespace as is usual.

llvm-svn: 192744

llvm-svn: 192743

Some background: One can pass compiled resource files (.res files) directly
to the linker on Windows. If a resource file is given, the linker will run
"cvtres" command in background to convert the resource file to a COFF file
to link it.

What I'm trying to do with this patch is to make the linker to recognize
the resource file by file magic, so that it can run cvtres command.

Differential Revision: http://llvm-reviews.chandlerc.com/D1943

llvm-svn: 192742

llvm-svn: 192737

llvm-svn: 192735

scalar signed saturating negate instructions.

llvm-svn: 192733

llvm-svn: 192732

llvm-svn: 192731

PR17309

llvm-svn: 192730

- Type of index used in extract_vector_elt or insert_vector_elt supposes
  to be TLI.getVectorIdxTy() which is pointer type on most targets. It'd
  better to truncate (or zero-extend in case it's changed later) it to
  mask element type to guarantee they are matching instead of asserting
  that.

llvm-svn: 192722

- Lower signed division by constant powers-of-2 to target-independent
  DAG operators instead of target-dependent ones to support them better
  on targets where vector types are legal but shift operators on that
  types are illegal. E.g., on AVX, PSRAW is only available on <8 x i16>
  though <16 x i16> is a legal type.

llvm-svn: 192721

llvm-svn: 192717

llvm-svn: 192709

MachineInstr::addOperand().

llvm-svn: 192707

llvm-svn: 192699

Revert "Add AllTargetsBindings sublibrary" as it breaks cmake build on (atleast) windows and darwin.

llvm-svn: 192697

This new library will be linked in when using the "all-targets"
component and contains the LLVMInitializeAll* functions.

This means that those functions will exist as real symbols in
the shared library, and can therefore can be called from
bindings that are using ffi the shared library.

llvm-svn: 192690

llvm-svn: 192681

There doesn't seem to be a need in checking if a directory exists if we
will just rm -rf it once we affirm that it does.  Instead, just blindly
try to delete it.

This fixes PR17541.

llvm-svn: 192679

llvm-svn: 192678

llvm/test/CodeGen/X86/break-avx-dep.ll: Relax an expression to be matched to also r[89], not only rXX.

llvm-svn: 192675

Remove x86_sse42_crc32_64_8 intrinsic. It has no functional difference from x86_sse42_crc32_32_8 and was not mapped to a clang builtin. I'm not even sure why this form of the instruction is even called out explicitly in the docs. Also add AutoUpgrade support to convert it into the other intrinsic with appropriate trunc and zext.

llvm-svn: 192672

rdar:15221834 False AVX register dependencies cause 5x slowdown on
flops-5/6 and significant slowdown on several others.

This was blocking the switch to MI-Sched.

llvm-svn: 192669

llvm-svn: 192668

parts of the accumulators and gets expanded post-RA.

llvm-svn: 192667

of relying on AddedComplexity.

llvm-svn: 192665

llvm-svn: 192663

llvm-svn: 192662

llvm-svn: 192661

llvm-svn: 192660

llvm-svn: 192642

Thanks to Shuxin Yang for catching this.

llvm-svn: 192637

through bitcast, ptrtoint, and inttoptr instructions. This is valid
only if the related instructions are in that same basic block, otherwise
we may reference variables that were not live accross basic blocks
resulting in undefined virtual registers.

The bug was exposed when both SDISel and FastISel were used within the same
function, i.e., one basic block is issued with FastISel and another with SDISel,
as demonstrated with the testcase.

<rdar://problem/15192473>

llvm-svn: 192636

This pass is needed to break false dependencies. Without it, unlucky
register assignment can result in wild (5x) swings in
performance. This pass was trying to handle AVX but not getting it
right. AVX doesn't have partial register defs, it has unused register
reads in which the high bits of a source operand are copied into the
unused bits of the dest.

Fixing this requires conservative liveness analysis. This is awkard
because the pass already has its own pseudo-liveness. However, proper
liveness is expensive, and we would like to use a generic utility to
compute it. The fix only invokes liveness on-demand. It is rare to
detect a case that needs undef-read dependence breaking, but when it
happens, it can be needed many times within a very large block.

I think the existing heuristic which uses a register window of 16 is
too conservative for loop-carried false dependencies. If the loop is a
reduction. The out-of-order engine may be able to execute several loop
iterations in parallel. However, I'll leave this tuning exercise for
next time.

llvm-svn: 192635

llvm-svn: 192634

llvm-svn: 192633