[PATCH] D18671: [CUDA] Add --cuda-flush-denormals-to-zero.

[Justin Lebar via cfe-commits]

jlebar created this revision.
jlebar added reviewers: tra, rnk.
jlebar added a subscriber: cfe-commits.

Setting this flag causes all functions are annotated with the
"nvvm-f32ftz" = "true" attribute.

In addition, we annotate the module with "nvvm-reflect-ftz" set
to 0 or 1, depending on whether -cuda-flush-denormals-to-zero is set.
This is read by the NVVMReflect pass.

http://reviews.llvm.org/D18671

Files:
  include/clang/Basic/LangOptions.def
  include/clang/Driver/CC1Options.td
  include/clang/Driver/Options.td
  lib/CodeGen/CGCall.cpp
  lib/CodeGen/CodeGenModule.cpp
  lib/Driver/ToolChains.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/CodeGenCUDA/flush-denormals.cu

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