Update docu link; Add the O0 + O3 cmake cache

The O3 cache was mentioned in example in the docu, so we should make
sure it actually exists :)

llvm-svn: 341263

Author: MatzeB

README.txt

@@ -3,6 +3,6 @@ LLVM "test-suite" Repository
 
 Please see the LLVM testing infrastructure guide:
 
-  http://llvm.org/docs/TestingGuide.html
+  https://llvm.org/docs/TestSuiteGuide.html
 
 for more information on the contents of this repository.

cmake/caches/O0.cmake

@@ -0,0 +1,5 @@
+# Lowest optimization level and maximum debug information; A typical developer
+# configuration.
+set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "")
+set(CMAKE_C_FLAGS_DEBUG "-O0" CACHE STRING "")
+set(CMAKE_CXX_FLAGS_DEBUG "-O0" CACHE STRING "")

cmake/caches/O3.cmake

@@ -0,0 +1,5 @@
+set(OPTFLAGS "${OPTFLAGS} -O3")
+
+set(CMAKE_C_FLAGS_RELEASE "${OPTFLAGS}" CACHE STRING "")
+set(CMAKE_CXX_FLAGS_RELEASE "${OPTFLAGS}" CACHE STRING "")
+set(CMAKE_BUILD_TYPE "Release" CACHE STRING "")