[PATCH] D13082: [FunctionAttrs] Conservatively handle operand bundles.

[Sanjoy Das via llvm-commits]

sanjoy created this revision.
sanjoy added reviewers: majnemer, chandlerc, nlewycky, reames.
sanjoy added a subscriber: llvm-commits.
sanjoy added a dependency: D12457: [Bitcode][Asm] Teach LLVM to read and write operand bundles..

This teaches the FunctionAttrs pass to handle operand bundles
conservatively.  All calls / invokes with operand bundles are
currently considered to be reading from and writing to the entire
heap.

I've also added a test case PruneEH to show that a call with operand
bundles inherits its callee's behavior with respect to unwinding -- if
the callee is `nounwind`, the call is `nounwind` too.

Depends on D12457.

http://reviews.llvm.org/D13082

Files:
  include/llvm/IR/CallSite.h
  include/llvm/IR/InstrTypes.h
  include/llvm/IR/Instructions.h
  lib/Analysis/CaptureTracking.cpp
  lib/IR/Instructions.cpp
  lib/Transforms/IPO/FunctionAttrs.cpp
  test/Transforms/FunctionAttrs/operand-bundles.ll
  test/Transforms/PruneEH/operand-bundles.ll

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