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[NEON] Add a comment explaining the situation with vget_high_f16() and vget_low_f16() intrinsics 

Related differential revision: https://reviews.llvm.org/D45668

llvm-svn: 330420
This commit is contained in:
Ivan A. Kosarev 2018-04-20 12:09:25 +00:00
parent d22b35b48c
commit 4dd9a557fc
1 changed files with 4 additions and 0 deletions
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4
clang/include/clang/Basic/arm_neon.td
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@ -397,6 +397,10 @@ def VCOMBINE : NoTestOpInst<"vcombine", "kdd", "csilhfUcUsUiUlPcPs", OP_CONC>;
////////////////////////////////////////////////////////////////////////////////
// E.3.21 Splitting vectors
// Note that the ARM NEON Reference 2.0 mistakenly document the vget_high_f16()
// and vget_low_f16() intrinsics as AArch64-only. We (and GCC) support all
// versions of these intrinsics in both AArch32 and AArch64 architectures. See
// D45668 for more details.
let InstName = "vmov" in {
def VGET_HIGH : NoTestOpInst<"vget_high", "dk", "csilhfUcUsUiUlPcPs", OP_HI>;
def VGET_LOW : NoTestOpInst<"vget_low", "dk", "csilhfUcUsUiUlPcPs", OP_LO>;