| Message ID | 1522092845-9842-1-git-send-email-joshua.henderson@microchip.com |
|---|---|
| State | Accepted |
| Headers | show |
| Series | [v2] Config.in: add -Ofast option | expand |
Hello, On Mon, 26 Mar 2018 12:34:05 -0700, Joshua Henderson wrote: > -Ofast (introduced in GCC 4.6) It combines the existing optimization level -O3 > with options that can affect standards compliance but result in better optimized > code. For example, -Ofast enables -ffast-math. > > Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com> > > --- Applied to master, thanks. Thomas
diff --git a/Config.in b/Config.in index 0002df5..145f915 100644 --- a/Config.in +++ b/Config.in @@ -527,6 +527,16 @@ config BR2_OPTIMIZE_S -ftree-vect-loop-version This is the default. +config BR2_OPTIMIZE_FAST + bool "optimize for fast" + depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 + help + Optimize for fast. Disregard strict standards compliance. -Ofast + enables all -O3 optimizations. It also enables optimizations that are + not valid for all standard-compliant programs. It turns on -ffast-math + and the Fortran-specific -fstack-arrays, unless -fmax-stack-var-size + is specified, and -fno-protect-parens. + endchoice config BR2_GOOGLE_BREAKPAD_ENABLE diff --git a/package/Makefile.in b/package/Makefile.in index e387ce6..828e12e 100644 --- a/package/Makefile.in +++ b/package/Makefile.in @@ -128,6 +128,9 @@ endif ifeq ($(BR2_OPTIMIZE_S),y) TARGET_OPTIMIZATION = -Os endif +ifeq ($(BR2_OPTIMIZE_FAST),y) +TARGET_OPTIMIZATION = -Ofast +endif ifeq ($(BR2_DEBUG_1),y) TARGET_DEBUGGING = -g1 endif
-Ofast (introduced in GCC 4.6) It combines the existing optimization level -O3 with options that can affect standards compliance but result in better optimized code. For example, -Ofast enables -ffast-math. Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com> --- v2: - Add proper depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 --- Config.in | 10 ++++++++++ package/Makefile.in | 3 +++ 2 files changed, 13 insertions(+)