fix unit test and documentation

Author: farzonl

llvm/docs/GlobalISel/GenericOpcode.rst

@@ -593,7 +593,7 @@ G_FLOG, G_FLOG2, G_FLOG10
 Calculate the base-e, base-2, or base-10 respectively.
 
 G_FCEIL, G_FCOS, G_FSIN, G_FTAN, G_FSQRT, G_FFLOOR, G_FRINT, G_FNEARBYINT
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 These correspond to the standard C functions of the same name.
 

llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir

@@ -674,6 +674,9 @@
 # DEBUG-NEXT: .. opcode {{[0-9]+}} is aliased to {{[0-9]+}}
 # DEBUG-NEXT: .. the first uncovered type index: 1, OK
 # DEBUG-NEXT: .. the first uncovered imm index: 0, OK
+# DEBUG-NEXT: G_FTAN (opcode {{[0-9]+}}): 1 type index, 0 imm indices
+# DEBUG-NEXT: .. type index coverage check SKIPPED: no rules defined
+# DEBUG-NEXT: .. imm index coverage check SKIPPED: no rules defined
 # DEBUG-NEXT: G_FSQRT (opcode {{[0-9]+}}): 1 type index, 0 imm indices
 # DEBUG-NEXT: .. opcode {{[0-9]+}} is aliased to {{[0-9]+}}
 # DEBUG-NEXT: .. type index coverage check SKIPPED: user-defined predicate detected