[clang] [llvm] [AMDGPU] Add support for `v_tanh_bf16` on gfx1250 (PR #147425)

[Matt Arsenault via llvm-commits]

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@@ -700,7 +700,8 @@ GCNTTIImpl::instCombineIntrinsic(InstCombiner &IC, IntrinsicInst &II) const {
     break;
   }
   case Intrinsic::amdgcn_sqrt:
-  case Intrinsic::amdgcn_rsq: {
+  case Intrinsic::amdgcn_rsq:
+  case Intrinsic::amdgcn_tanh: {
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arsenm wrote:

This isn't tested 

https://github.com/llvm/llvm-project/pull/147425