add ptx70 and sm75 predicates, update test

Author: mjulian31

llvm/lib/Target/NVPTX/NVPTXInstrInfo.td

@@ -1252,7 +1252,8 @@ def COS_APPROX_f32 :
                       [(set f32:$dst, (UnaryOpAllowsApproxFn<fcos> f32:$src))]>;
 def TANH_APPROX_f32 :
   BasicNVPTXInst<(outs B32:$dst), (ins B32:$src), "tanh.approx.f32",
-                 [(set f32:$dst, (UnaryOpAllowsApproxFn<ftanh> f32:$src))]>;
+                 [(set f32:$dst, (UnaryOpAllowsApproxFn<ftanh> f32:$src))]>,
+                 Requires<[hasPTX<70>, hasSM<75>]>;
 
 //-----------------------------------
 // Bitwise operations

llvm/test/CodeGen/NVPTX/tanhf.ll

@@ -1,7 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
-; RUN: llc < %s -mtriple=nvptx64 | FileCheck %s
-; RUN: %if ptxas %{ llc < %s -mtriple=nvptx64 | %ptxas-verify %}
+; RUN: llc < %s -mcpu=sm_75 -mattr=+ptx70 | FileCheck %s
+; RUN: %if ptxas-11.0 %{ llc < %s -mcpu=sm_75 -mattr=+ptx70 | %ptxas-verify -arch=sm_75 %}
 
+target triple = "nvptx64-nvidia-cuda"
 
 define float @test1(float %in) local_unnamed_addr {
 ; CHECK-LABEL: test1(