here comes the CMAKE part on LLVM_COMPACT_SENTINELS; see also r78628 and r78661

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78803 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 12860ee..27a7f92 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -94,6 +94,12 @@
   endif()
 endif()
 
+if( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" AND NOT LLVM_ENABLE_ASSERTIONS )
+  set( LLVM_COMPACT_SENTINELS 1 )
+else( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" AND NOT LLVM_ENABLE_ASSERTIONS )
+  set( LLVM_COMPACT_SENTINELS 0 )
+endif( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" AND NOT LLVM_ENABLE_ASSERTIONS )
+
 if( LLVM_TARGETS_TO_BUILD STREQUAL "all" )
   set( LLVM_TARGETS_TO_BUILD ${LLVM_ALL_TARGETS} )
 endif()
@@ -102,7 +108,7 @@
 foreach(c ${LLVM_TARGETS_TO_BUILD})
   list(FIND LLVM_ALL_TARGETS ${c} idx)
   if( idx LESS 0 )
-    message(FATAL_ERROR "The target `${c}' does not exists.
+    message(FATAL_ERROR "The target `${c}' does not exist.
     It should be one of\n${LLVM_ALL_TARGETS}")
   else()
     set(LLVM_ENUM_TARGETS "${LLVM_ENUM_TARGETS}LLVM_TARGET(${c})\n")