R600: Remove intrinsics that appear to be unused

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213087 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Add predicate for UnsafeFPMath

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213088 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Implement less wrong f32 fdiv

Assuming single precision denormals and accurate sqrt/div are not
reported, this passes the OpenCL conformance test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213089 91177308-0d34-0410-b5e6-96231b3b80d8
ADT: Add MapVector::remove_if

Add a `MapVector::remove_if()` that erases items in bulk in linear time,
as opposed to quadratic time for repeated calls to `MapVector::erase()`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213090 91177308-0d34-0410-b5e6-96231b3b80d8