Index: cmake-3.17.0-rc1/Modules/Compiler/Absoft-Fortran.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/Absoft-Fortran.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/Absoft-Fortran.cmake

@@ -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")

Index: cmake-3.17.0-rc1/Modules/Compiler/G95-Fortran.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/G95-Fortran.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/G95-Fortran.cmake

@@ -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")

Index: cmake-3.17.0-rc1/Modules/Compiler/GNU.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/GNU.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/GNU.cmake

@@ -55,7 +55,7 @@ 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>")

Index: cmake-3.17.0-rc1/Modules/Compiler/GNU-Fortran.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/GNU-Fortran.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/GNU-Fortran.cmake

@@ -14,7 +14,7 @@ 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)

Index: cmake-3.17.0-rc1/Modules/Compiler/Intel.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/Intel.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/Intel.cmake

@@ -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}")

Index: cmake-3.17.0-rc1/Modules/Compiler/NVIDIA-CUDA.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/NVIDIA-CUDA.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/NVIDIA-CUDA.cmake

@@ -36,7 +36,7 @@ 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()

Index: cmake-3.17.0-rc1/Modules/Compiler/PathScale.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/PathScale.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/PathScale.cmake

@@ -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()

Index: cmake-3.17.0-rc1/Modules/Compiler/PGI.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/PGI.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/PGI.cmake

@@ -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)

Index: cmake-3.17.0-rc1/Modules/Compiler/SunPro-ASM.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/SunPro-ASM.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/SunPro-ASM.cmake

@@ -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

Index: cmake-3.17.0-rc1/Modules/Compiler/SunPro-C.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/SunPro-C.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/SunPro-C.cmake

@@ -19,7 +19,7 @@ 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>")

Index: cmake-3.17.0-rc1/Modules/Compiler/SunPro-CXX.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/SunPro-CXX.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/SunPro-CXX.cmake

@@ -19,7 +19,7 @@ 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>")

Index: cmake-3.17.0-rc1/Modules/Compiler/SunPro-Fortran.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Compiler/SunPro-Fortran.cmake

+++ cmake-3.17.0-rc1/Modules/Compiler/SunPro-Fortran.cmake

@@ -17,7 +17,7 @@ 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")

Index: cmake-3.17.0-rc1/Modules/Platform/Windows-Clang.cmake

===================================================================

--- cmake-3.17.0-rc1.orig/Modules/Platform/Windows-Clang.cmake

+++ cmake-3.17.0-rc1/Modules/Platform/Windows-Clang.cmake

@@ -79,7 +79,7 @@ macro(__windows_compiler_clang_gnu lang)

     string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g -Xclang -gcodeview -O0 ${__ADDED_FLAGS_DEBUG}")

     string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os -DNDEBUG ${__ADDED_FLAGS}")

-    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3 -DNDEBUG ${__ADDED_FLAGS}")

+    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2 -DNDEBUG ${__ADDED_FLAGS}")

     string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g -DNDEBUG -Xclang -gcodeview ${__ADDED_FLAGS}")

   endif()

   set(CMAKE_INCLUDE_SYSTEM_FLAG_${lang} "-isystem ")