[PATCH] D43515: More math intrinsics for conservative math handling

[Kevin P. Neal via Phabricator via llvm-commits]

kpn created this revision.
kpn added reviewers: andrew.w.kaylor, craig.topper, hfinkel, mehdi_amini, aemerson.
Herald added a subscriber: llvm-commits.

This builds on https://reviews.llvm.org/D27028 and https://reviews.llvm.org/D32319's work on constrained math intrinsics.

Quoting from https://reviews.llvm.org/D32319: "The purpose of the constrained intrinsics is to force the optimizer to respect the restrictions that will be necessary to support things like the STDC FENV_ACCESS ON pragma without interfering with optimizations when these restrictions are not needed."

There are more patches coming, but I wanted to start with just a handful here.


Repository:
  rL LLVM

https://reviews.llvm.org/D43515

Files:
  docs/LangRef.rst
  include/llvm/CodeGen/ISDOpcodes.h
  include/llvm/CodeGen/SelectionDAGNodes.h
  include/llvm/IR/IntrinsicInst.h
  include/llvm/IR/Intrinsics.td
  lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
  lib/CodeGen/SelectionDAG/SelectionDAG.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
  lib/IR/IntrinsicInst.cpp
  lib/IR/Verifier.cpp
  test/CodeGen/X86/fp-intrinsics.ll
  test/Feature/fp-intrinsics.ll

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