Fix a ton of comment typos found by codespell. Patch by

Luis Felipe Strano Moraes!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvmc/doc/LLVMC-Reference.rst

@@ -306,7 +306,7 @@ separate option groups syntactically.
      sign: ``-std c99``. At most one occurrence is allowed.
 
    - ``parameter_list_option`` - same as the above, but more than one option
-     occurence is allowed.
+     occurrence is allowed.
 
    - ``prefix_option`` - same as the parameter_option, but the option name and
      argument do not have to be separated. Example: ``-ofile``. This can be also
@@ -314,7 +314,7 @@ separate option groups syntactically.
      (``=file`` will be interpreted as option value). At most one occurrence is
      allowed.
 
-   - ``prefix_list_option`` - same as the above, but more than one occurence of
+   - ``prefix_list_option`` - same as the above, but more than one occurrence of
      the option is allowed; example: ``-lm -lpthread``.
 
    - ``alias_option`` - a special option type for creating aliases. Unlike other

tools/llvmc/src/Base.td.in

@@ -191,7 +191,7 @@ class llvm_gcc_based <string cmd, string in_lang, string E_ext, dag out_lang,
          // ('-S' && '-emit-llvm') && !('opt') -> output .ll
          (and (switch_on "emit-llvm", "S"), (not (switch_on "opt"))),
               [(forward "S"), (output_suffix "ll")],
-         // Ususally just output .bc
+         // Usually just output .bc
          (not (switch_on "fsyntax-only")),
               [(append_cmd "-c"), (append_cmd "-emit-llvm")],