ICC aliasing optimization flags

GCC already uses -fstrict-aliasing (-ansi-alias). Thus it is safe
to also use this for optimization in ICC. const/non-const aliasing
shouldn't be used anywhere either and should be safe too.

Change-Id: I6a1b10c3d00bc2473a25a15e26934f61c046157d

diff --git a/cmake/gmxCFlags.cmake b/cmake/gmxCFlags.cmake
index 8e8b1d2306740b789de59c1d893be5e40a455a78..7b4994a1e04933c0359dc49e45d5c1d7aef63321 100644 (file)
--- a/cmake/gmxCFlags.cmake
+++ b/cmake/gmxCFlags.cmake
@@ -99,7 +99,7 @@ MACRO(gmx_c_flags)
             endif()
             GMX_TEST_CFLAG(CFLAGS_WARN "-w3 -wd111 -wd177 -wd181 -wd193 -wd271 -wd304 -wd383 -wd424 -wd444 -wd522 -wd593 -wd869 -wd981 -wd1418 -wd1419 -wd1572 -wd1599 -wd2259 -wd2415 -wd2547 -wd2557 -wd3280 -wd3346" GMXC_CFLAGS)
             GMX_TEST_CFLAG(CFLAGS_STDGNU "-std=gnu99" GMXC_CFLAGS)
-            GMX_TEST_CFLAG(CFLAGS_OPT "-ip -funroll-all-loops" GMXC_CFLAGS_RELEASE)
+            GMX_TEST_CFLAG(CFLAGS_OPT "-ip -funroll-all-loops -alias-const -ansi-alias" GMXC_CFLAGS_RELEASE)
         else()
             GMX_TEST_CFLAG(CFLAGS_WARN "/W2" GMXC_CFLAGS)
             GMX_TEST_CFLAG(CFLAGS_X86 "/Qip" GMXC_CFLAGS_RELEASE)
@@ -112,7 +112,7 @@ MACRO(gmx_c_flags)
                 GMX_TEST_CXXFLAG(CXXFLAGS_PRAGMA "-Wno-unknown-pragmas" GMXC_CXXFLAGS)
             endif()
             GMX_TEST_CXXFLAG(CXXFLAGS_WARN "-w3 -wd111 -wd177 -wd181 -wd193 -wd271 -wd304 -wd383 -wd424 -wd444 -wd522 -wd593 -wd869 -wd981 -wd1418 -wd1419 -wd1572 -wd1599 -wd2259 -wd2415 -wd2547 -wd2557 -wd3280 -wd3346 -wd1782" GMXC_CXXFLAGS)
-            GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-ip -funroll-all-loops" GMXC_CXXFLAGS_RELEASE)
+            GMX_TEST_CXXFLAG(CXXFLAGS_OPT "-ip -funroll-all-loops -alias-const -ansi-alias" GMXC_CXXFLAGS_RELEASE)
         else()
             GMX_TEST_CXXFLAG(CXXFLAGS_WARN "/W2" GMXC_CXXFLAGS)
             GMX_TEST_CXXFLAG(CXXFLAGS_X86 "/Qip" GMXC_CXXFLAGS_RELEASE)