Update documentation

Author: petrhosek

llvm/CMakeLists.txt

@@ -874,9 +874,9 @@ option (LLVM_VERSION_PRINTER_SHOW_HOST_TARGET_INFO
 option(LLVM_VERSION_PRINTER_SHOW_BUILD_CONFIG
   "Show the optional build config flags when tools are invoked with --version." ON)
 
-set(LLVM_CRASH_DIAGNOSTICS "" CACHE STRING "Control when to generate reproducer. Can be OFF, COMPILER, ALL")
-set(LLVM_CRASH_DIAGNOSTICS_DIR "" CACHE STRING "Path to use for crash reproducers")
-set(LLVM_GEN_REPRODUCER OFF CACHE BOOL "Generate a reproducer. Can be OFF, CRASH, ERROR, ALWAYS")
+set(LLVM_CRASH_DIAGNOSTICS "" CACHE STRING "Controls whether to generate crash reproducers. Can be OFF, COMPILER, ALL")
+set(LLVM_CRASH_DIAGNOSTICS_DIR "" CACHE PATH "Path to use for crash reproducers")
+set(LLVM_GEN_REPRODUCER OFF CACHE STRING "Controls when to generate compiler reproducers. Can be OFF, CRASH, ERROR, ALWAYS")
 
 # You can configure which libraries from LLVM you want to include in the
 # shared library by setting LLVM_DYLIB_COMPONENTS to a semi-colon delimited

llvm/docs/CMake.rst

@@ -900,6 +900,17 @@ enabled sub-projects. Nearly all of these variable names begin with
   the linker needs to resolve. It is recommended for platforms using the ELF object
   format, like Linux systems when linker memory usage is too high.
 
+**LLVM_CRASH_DIAGNOSTICS**:STRING
+  Controls whether to generate crash reproducers. Possible values are ``OFF``,
+  ``COMPILER`` for compiler, and ``ALL`` for compiler and linker reproducers.
+
+**LLVM_CRASH_DIAGNOSTICS_DIR**:PATH
+  Path to use for crash reproducers (controlled by ``LLVM_CRASH_DIAGNOSTICS``).
+
+**LLVM_GEN_REPRODUCER**:STRING
+  Controls when to generate compiler reproducers. Can be ``OFF``, ``CRASH`` for
+  crashes, ``ERROR`` for compiler errors, and ``ALWAYS`` for every invocation.
+
 **SPHINX_EXECUTABLE**:STRING
   The path to the ``sphinx-build`` executable detected by CMake.
   For installation instructions, see