[PATCH] D12923: Add support for function attribute "notail"

[Akira Hatanaka via llvm-commits]

ahatanak created this revision.
ahatanak added a subscriber: llvm-commits.

This patch adds support for a new IR function attribute "notail". The attribute is used to disable tail call optimization on calls to functions marked with the attribute.

This attribute is different from the existing attribute "disable-tail-calls", which disables tail call optimizations on all call sites within the marked function.

The patch to add support for the corresponding source-level function attribute is here:
http://reviews.llvm.org/D12922

http://reviews.llvm.org/D12923

Files:
  docs/LangRef.rst
  include/llvm/Bitcode/LLVMBitCodes.h
  include/llvm/IR/Attributes.h
  include/llvm/IR/Instructions.h
  lib/AsmParser/LLLexer.cpp
  lib/AsmParser/LLParser.cpp
  lib/AsmParser/LLToken.h
  lib/Bitcode/Reader/BitcodeReader.cpp
  lib/Bitcode/Writer/BitcodeWriter.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  lib/IR/Attributes.cpp
  lib/IR/Verifier.cpp
  lib/Transforms/Scalar/TailRecursionElimination.cpp
  test/Bindings/llvm-c/Inputs/invalid.ll.bc
  test/Bindings/llvm-c/invalid-bitcode.test
  test/Bitcode/attributes.ll
  test/Bitcode/invalid.ll
  test/Bitcode/invalid.ll.bc
  test/CodeGen/X86/attr-notail.ll
  test/Transforms/TailCallElim/notail.ll

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