diff -up cmake-3.13.1/Modules/Compiler/Absoft-Fortran.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/Absoft-Fortran.cmake
--- cmake-3.13.1/Modules/Compiler/Absoft-Fortran.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/Absoft-Fortran.cmake	2018-11-28 14:13:41.764320237 -0600
@@ -1,7 +1,7 @@
 string(APPEND CMAKE_Fortran_FLAGS_INIT " ")
 string(APPEND CMAKE_Fortran_FLAGS_DEBUG_INIT " -g")
 string(APPEND CMAKE_Fortran_FLAGS_MINSIZEREL_INIT " ")
-string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O3")
+string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O2")
 string(APPEND CMAKE_Fortran_FLAGS_RELWITHDEBINFO_INIT " -O2 -g")
 set(CMAKE_Fortran_MODDIR_FLAG "-YMOD_OUT_DIR=")
 set(CMAKE_Fortran_MODPATH_FLAG "-p")
diff -up cmake-3.13.1/Modules/Compiler/G95-Fortran.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/G95-Fortran.cmake
--- cmake-3.13.1/Modules/Compiler/G95-Fortran.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/G95-Fortran.cmake	2018-11-28 14:13:41.764320237 -0600
@@ -1,7 +1,7 @@
 string(APPEND CMAKE_Fortran_FLAGS_INIT " ")
 string(APPEND CMAKE_Fortran_FLAGS_DEBUG_INIT " -g")
 string(APPEND CMAKE_Fortran_FLAGS_MINSIZEREL_INIT " -Os")
-string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O3")
+string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O2")
 string(APPEND CMAKE_Fortran_FLAGS_RELWITHDEBINFO_INIT " -O2 -g")
 set(CMAKE_Fortran_MODDIR_FLAG "-fmod=")
 set(CMAKE_Fortran_VERBOSE_FLAG "-v")
diff -up cmake-3.13.1/Modules/Compiler/GNU.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/GNU.cmake
--- cmake-3.13.1/Modules/Compiler/GNU.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/GNU.cmake	2018-11-28 14:13:41.764320237 -0600
@@ -43,7 +43,7 @@ macro(__compiler_gnu lang)
   string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
   string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g")
   string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os -DNDEBUG")
-  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3 -DNDEBUG")
+  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2 -DNDEBUG")
   string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g -DNDEBUG")
   set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
   set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
diff -up cmake-3.13.1/Modules/Compiler/GNU-Fortran.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/GNU-Fortran.cmake
--- cmake-3.13.1/Modules/Compiler/GNU-Fortran.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/GNU-Fortran.cmake	2018-11-28 14:13:41.765320245 -0600
@@ -11,7 +11,7 @@ set(CMAKE_Fortran_POSTPROCESS_FLAG "-fpr
 
 # No -DNDEBUG for Fortran.
 string(APPEND CMAKE_Fortran_FLAGS_MINSIZEREL_INIT " -Os")
-string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O3")
+string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O2")
 
 # No -isystem for Fortran because it will not find .mod files.
 unset(CMAKE_INCLUDE_SYSTEM_FLAG_Fortran)
diff -up cmake-3.13.1/Modules/Compiler/Intel.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/Intel.cmake
--- cmake-3.13.1/Modules/Compiler/Intel.cmake.fedora_flag_release	2018-11-28 14:13:41.765320245 -0600
+++ cmake-3.13.1/Modules/Compiler/Intel.cmake	2018-11-28 14:14:12.503566827 -0600
@@ -22,7 +22,7 @@ else()
     string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
     string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g")
     string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os")
-    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3")
+    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2")
     string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g")
 
     set(CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "${CMAKE_${lang}_COMPILER}")
diff -up cmake-3.13.1/Modules/Compiler/NVIDIA-CUDA.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/NVIDIA-CUDA.cmake
--- cmake-3.13.1/Modules/Compiler/NVIDIA-CUDA.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/NVIDIA-CUDA.cmake	2018-11-28 14:13:41.766320253 -0600
@@ -9,7 +9,7 @@ if(NOT "x${CMAKE_CUDA_SIMULATE_ID}" STRE
   set(CMAKE_SHARED_LIBRARY_CUDA_FLAGS -fPIC)
   string(APPEND CMAKE_CUDA_FLAGS_INIT " ")
   string(APPEND CMAKE_CUDA_FLAGS_DEBUG_INIT " -g")
-  string(APPEND CMAKE_CUDA_FLAGS_RELEASE_INIT " -O3 -DNDEBUG")
+  string(APPEND CMAKE_CUDA_FLAGS_RELEASE_INIT " -O2 -DNDEBUG")
   string(APPEND CMAKE_CUDA_FLAGS_MINSIZEREL_INIT " -O1 -DNDEBUG")
   string(APPEND CMAKE_CUDA_FLAGS_RELWITHDEBINFO_INIT " -O2 -g -DNDEBUG")
 endif()
diff -up cmake-3.13.1/Modules/Compiler/PathScale.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/PathScale.cmake
--- cmake-3.13.1/Modules/Compiler/PathScale.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/PathScale.cmake	2018-11-28 14:13:41.766320253 -0600
@@ -16,6 +16,6 @@ macro(__compiler_pathscale lang)
   string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
   string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g -O0")
   string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os")
-  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3")
+  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2")
   string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -g -O2")
 endmacro()
diff -up cmake-3.13.1/Modules/Compiler/PGI.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/PGI.cmake
--- cmake-3.13.1/Modules/Compiler/PGI.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/PGI.cmake	2018-11-28 14:13:41.766320253 -0600
@@ -18,7 +18,7 @@ macro(__compiler_pgi lang)
   string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
   string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g -O0")
   string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -O2 -s")
-  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -fast -O3")
+  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -fast -O2")
   string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -gopt")
 
   if(CMAKE_HOST_WIN32)
diff -up cmake-3.13.1/Modules/Compiler/SunPro-ASM.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/SunPro-ASM.cmake
--- cmake-3.13.1/Modules/Compiler/SunPro-ASM.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/SunPro-ASM.cmake	2018-11-28 14:13:41.767320261 -0600
@@ -11,7 +11,7 @@ set(CMAKE_SHARED_LIBRARY_SONAME_ASM_FLAG
 string(APPEND CMAKE_ASM_FLAGS_INIT " ")
 string(APPEND CMAKE_ASM_FLAGS_DEBUG_INIT " -g")
 string(APPEND CMAKE_ASM_FLAGS_MINSIZEREL_INIT " -xO2 -xspace -DNDEBUG")
-string(APPEND CMAKE_ASM_FLAGS_RELEASE_INIT " -xO3 -DNDEBUG")
+string(APPEND CMAKE_ASM_FLAGS_RELEASE_INIT " -xO2 -DNDEBUG")
 string(APPEND CMAKE_ASM_FLAGS_RELWITHDEBINFO_INIT " -g -xO2 -DNDEBUG")
 
 # Initialize ASM link type selection flags.  These flags are used when
diff -up cmake-3.13.1/Modules/Compiler/SunPro-C.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/SunPro-C.cmake
--- cmake-3.13.1/Modules/Compiler/SunPro-C.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/SunPro-C.cmake	2018-11-28 14:13:41.767320261 -0600
@@ -15,7 +15,7 @@ set(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "
 string(APPEND CMAKE_C_FLAGS_INIT " ")
 string(APPEND CMAKE_C_FLAGS_DEBUG_INIT " -g")
 string(APPEND CMAKE_C_FLAGS_MINSIZEREL_INIT " -xO2 -xspace -DNDEBUG")
-string(APPEND CMAKE_C_FLAGS_RELEASE_INIT " -xO3 -DNDEBUG")
+string(APPEND CMAKE_C_FLAGS_RELEASE_INIT " -xO2 -DNDEBUG")
 string(APPEND CMAKE_C_FLAGS_RELWITHDEBINFO_INIT " -g -xO2 -DNDEBUG")
 
 set(CMAKE_DEPFILE_FLAGS_C "-xMD -xMF <DEPFILE>")
diff -up cmake-3.13.1/Modules/Compiler/SunPro-CXX.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/SunPro-CXX.cmake
--- cmake-3.13.1/Modules/Compiler/SunPro-CXX.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/SunPro-CXX.cmake	2018-11-28 14:13:41.768320269 -0600
@@ -15,7 +15,7 @@ set(CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG
 string(APPEND CMAKE_CXX_FLAGS_INIT " ")
 string(APPEND CMAKE_CXX_FLAGS_DEBUG_INIT " -g")
 string(APPEND CMAKE_CXX_FLAGS_MINSIZEREL_INIT " -xO2 -xspace -DNDEBUG")
-string(APPEND CMAKE_CXX_FLAGS_RELEASE_INIT " -xO3 -DNDEBUG")
+string(APPEND CMAKE_CXX_FLAGS_RELEASE_INIT " -xO2 -DNDEBUG")
 string(APPEND CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT " -g -xO2 -DNDEBUG")
 
 set(CMAKE_DEPFILE_FLAGS_CXX "-xMD -xMF <DEPFILE>")
diff -up cmake-3.13.1/Modules/Compiler/SunPro-Fortran.cmake.fedora_flag_release cmake-3.13.1/Modules/Compiler/SunPro-Fortran.cmake
--- cmake-3.13.1/Modules/Compiler/SunPro-Fortran.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Compiler/SunPro-Fortran.cmake	2018-11-28 14:13:41.768320269 -0600
@@ -13,7 +13,7 @@ set(CMAKE_EXECUTABLE_RUNTIME_Fortran_FLA
 string(APPEND CMAKE_Fortran_FLAGS_INIT " ")
 string(APPEND CMAKE_Fortran_FLAGS_DEBUG_INIT " -g")
 string(APPEND CMAKE_Fortran_FLAGS_MINSIZEREL_INIT " -xO2 -xspace -DNDEBUG")
-string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -xO3 -DNDEBUG")
+string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -xO2 -DNDEBUG")
 string(APPEND CMAKE_Fortran_FLAGS_RELWITHDEBINFO_INIT " -g -xO2 -DNDEBUG")
 set(CMAKE_Fortran_MODDIR_FLAG "-moddir=")
 set(CMAKE_Fortran_MODPATH_FLAG "-M")
diff -up cmake-3.13.1/Modules/Platform/IRIX64.cmake.fedora_flag_release cmake-3.13.1/Modules/Platform/IRIX64.cmake
--- cmake-3.13.1/Modules/Platform/IRIX64.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Platform/IRIX64.cmake	2018-11-28 14:13:41.768320269 -0600
@@ -37,7 +37,7 @@ if(NOT CMAKE_COMPILER_IS_GNUCC)
   set(CMAKE_CXX_CREATE_STATIC_LIBRARY
       "<CMAKE_CXX_COMPILER> -ar -o <TARGET> <OBJECTS>")
   set (CMAKE_CXX_FLAGS_DEBUG_INIT "-g")
-  set (CMAKE_CXX_FLAGS_MINSIZEREL_INIT "-O3 -DNDEBUG")
+  set (CMAKE_CXX_FLAGS_MINSIZEREL_INIT "-O2 -DNDEBUG")
   set (CMAKE_CXX_FLAGS_RELEASE_INIT "-O2 -DNDEBUG")
   set (CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT "-O2")
 endif()
diff -up cmake-3.13.1/Modules/Platform/IRIX.cmake.fedora_flag_release cmake-3.13.1/Modules/Platform/IRIX.cmake
--- cmake-3.13.1/Modules/Platform/IRIX.cmake.fedora_flag_release	2018-11-28 06:14:22.000000000 -0600
+++ cmake-3.13.1/Modules/Platform/IRIX.cmake	2018-11-28 14:13:41.768320269 -0600
@@ -7,7 +7,7 @@ if(NOT CMAKE_COMPILER_IS_GNUCXX)
       "<CMAKE_CXX_COMPILER> -ar -o <TARGET> <OBJECTS>")
   set (CMAKE_CXX_FLAGS_INIT "")
   set (CMAKE_CXX_FLAGS_DEBUG_INIT "-g")
-  set (CMAKE_CXX_FLAGS_MINSIZEREL_INIT "-O3 -DNDEBUG")
+  set (CMAKE_CXX_FLAGS_MINSIZEREL_INIT "-O2 -DNDEBUG")
   set (CMAKE_CXX_FLAGS_RELEASE_INIT "-O2 -DNDEBUG")
   set (CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT "-O2")
   set (CMAKE_C_FLAGS_INIT "")