From cf23bd3d8f7e7dec6331043295dbf1ec92fedb4f Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc@gmail.com>
Date: Sat, 30 Jun 2012 10:14:14 +0000
Subject: Hoist LLVM's lit testsuite infrastructure into module so that it can
 be re-used. Also, build in direct support for accumulating a set of lit
 parameters, arguments, and testsuites to run as part of a 'check-all' rule.
 This sinks 'check-all' from a Clang-specific construct to a generic construct
 of the project.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159482 91177308-0d34-0410-b5e6-96231b3b80d8
---
 CMakeLists.txt              | 14 ++++++++++++++
 cmake/modules/AddLLVM.cmake | 43 +++++++++++++++++++++++++++++++++++++++++++
 test/CMakeLists.txt         | 28 ++++++----------------------
 3 files changed, 63 insertions(+), 22 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 014b85fd1a..bb64db91bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -426,6 +426,20 @@ if( LLVM_INCLUDE_TESTS )
     # Windows.
     add_subdirectory(utils/KillTheDoctor)
   endif()
+
+  # Add a global check rule now that all subdirectories have been traversed
+  # and we know the total set of lit testsuites.
+  get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES)
+  get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS)
+  get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS)
+  get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS)
+  add_lit_target(check-all
+    "Running all regression tests"
+    ${LLVM_LIT_TESTSUITES}
+    PARAMS ${LLVM_LIT_PARAMS}
+    DEPENDS ${LLVM_LIT_DEPENDS}
+    ARGS ${LLVM_LIT_EXTRA_ARGS}
+    )
 endif()
 
 add_subdirectory(cmake/modules)
diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index 1dfe46b939..b5a5c83de5 100755
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -1,3 +1,4 @@
+include(LLVMParseArguments)
 include(LLVMProcessSources)
 include(LLVM-Config)
 
@@ -249,3 +250,45 @@ function(configure_lit_site_cfg input output)
 
   configure_file(${input} ${output} @ONLY)
 endfunction()
+
+# A raw function to create a lit target. This is used to implement the testuite
+# management functions.
+function(add_lit_target target comment)
+  parse_arguments(ARG "PARAMS;DEPENDS;ARGS" "" ${ARGN})
+  set(LIT_ARGS "${ARG_ARGS} ${LLVM_LIT_ARGS}")
+  separate_arguments(LIT_ARGS)
+  set(LIT_COMMAND
+    ${PYTHON_EXECUTABLE}
+    ${LLVM_SOURCE_DIR}/utils/lit/lit.py
+    --param build_config=${CMAKE_CFG_INTDIR}
+    --param build_mode=${RUNTIME_BUILD_MODE}
+    ${LIT_ARGS}
+    )
+  foreach(param ${ARG_PARAMS})
+    list(APPEND LIT_COMMAND --param ${param})
+  endforeach()
+  add_custom_target(${target}
+    COMMAND ${LIT_COMMAND} ${ARG_DEFAULT_ARGS}
+    COMMENT "${comment}"
+    DEPENDS ${ARG_DEPENDS}
+    )
+endfunction()
+
+# A function to add a set of lit test suites to be driven through 'check-*' targets.
+function(add_lit_testsuite target comment)
+  parse_arguments(ARG "PARAMS;DEPENDS;ARGS" "" ${ARGN})
+
+  # Register the testsuites, params and depends for the global check rule.
+  set_property(GLOBAL APPEND PROPERTY LLVM_LIT_TESTSUITES ${ARG_DEFAULT_ARGS})
+  set_property(GLOBAL APPEND PROPERTY LLVM_LIT_PARAMS ${ARG_PARAMS})
+  set_property(GLOBAL APPEND PROPERTY LLVM_LIT_DEPENDS ${ARG_DEPENDS})
+  set_property(GLOBAL APPEND PROPERTY LLVM_LIT_EXTRA_ARGS ${ARG_ARGS})
+
+  # Produce a specific suffixed check rule.
+  add_lit_target(${target} ${comment}
+    ${ARG_DEFAULT_ARGS}
+    PARAMS ${ARG_PARAMS}
+    DEPENDS ${ARG_DEPENDS}
+    ARGS ${ARG_ARGS}
+    )
+endfunction()
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index b68f7191d9..651d0243f1 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,6 +1,3 @@
-set(LIT_ARGS "${LLVM_LIT_ARGS}")
-separate_arguments(LIT_ARGS)
-
 configure_lit_site_cfg(
   ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
   ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
@@ -10,9 +7,10 @@ configure_lit_site_cfg(
   ${CMAKE_CURRENT_BINARY_DIR}/Unit/lit.site.cfg
   )
 
-# Setup the basic dependencies for running LLVM's regression and unit test
-# suites.
-add_custom_target(check-llvm.deps
+add_lit_testsuite(check-llvm "Running the LLVM regression tests"
+  ${CMAKE_CURRENT_BINARY_DIR}
+  PARAMS llvm_site_config=${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
+         llvm_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/Unit/lit.site.cfg
   DEPENDS UnitTests
           BugpointPasses LLVMHello
           llc lli llvm-ar llvm-as llvm-dis llvm-extract llvm-dwarfdump
@@ -20,23 +18,9 @@ add_custom_target(check-llvm.deps
           macho-dump opt
           FileCheck count not
   )
-set_target_properties(check-llvm.deps PROPERTIES FOLDER "Tests")
-
-# This is the primary action target to check the LLVM regression and unit test
-# suite.
-add_custom_target(check-llvm
-  COMMAND ${PYTHON_EXECUTABLE}
-          ${LLVM_SOURCE_DIR}/utils/lit/lit.py
-          --param llvm_site_config=${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
-          --param llvm_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/Unit/lit.site.cfg
-          --param build_config=${CMAKE_CFG_INTDIR}
-          --param build_mode=${RUNTIME_BUILD_MODE}
-          ${LIT_ARGS}
-          ${CMAKE_CURRENT_BINARY_DIR}
-          COMMENT "Running LLVM regression tests"
-  DEPENDS check-llvm.deps
-  )
+set_target_properties(check-llvm PROPERTIES FOLDER "Tests")
 
 # Setup a legacy alias for 'check-llvm'. This will likely change to be an
 # alias for 'check-all' at some point in the future.
 add_custom_target(check DEPENDS check-llvm)
+set_target_properties(check PROPERTIES FOLDER "Tests")
-- 
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