diff options
Diffstat (limited to 'gcc/config/sparc/linux64.h')
| -rw-r--r-- | gcc/config/sparc/linux64.h | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/gcc/config/sparc/linux64.h b/gcc/config/sparc/linux64.h index a1ef325946..9d53c29ede 100644 --- a/gcc/config/sparc/linux64.h +++ b/gcc/config/sparc/linux64.h @@ -164,22 +164,42 @@ extern const char *host_detect_local_cpu (int argc, const char **argv); #endif /* Support for a compile-time default CPU, et cetera. The rules are: - --with-cpu is ignored if -mcpu is specified. - --with-tune is ignored if -mtune is specified. + --with-cpu is ignored if -mcpu is specified; likewise --with-cpu-32 + and --with-cpu-64. + --with-tune is ignored if -mtune is specified; likewise --with-tune-32 + and --with-tune-64. --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu are specified. In the SPARC_BI_ARCH compiler we cannot pass %{!mcpu=*:-mcpu=%(VALUE)} here, otherwise say -mcpu=v7 would be passed even when -m64. - CC1_SPEC above takes care of this instead. */ + CC1_SPEC above takes care of this instead. + + Note that the order of the cpu* and tune* options matters: the + config.gcc file always sets with_cpu to some value, even if the + user didn't use --with-cpu when invoking the configure script. + This value is based on the target name. Therefore we have to make + sure that --with-cpu-32 takes precedence to --with-cpu in < v9 + systems, and that --with-cpu-64 takes precedence to --with-cpu in + >= v9 systems. As for the tune* options, in some platforms + config.gcc also sets a default value for it if the user didn't use + --with-tune when invoking the configure script. */ #undef OPTION_DEFAULT_SPECS #if DEFAULT_ARCH32_P #define OPTION_DEFAULT_SPECS \ + {"cpu_32", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ + {"cpu_64", "%{m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ {"cpu", "%{!m64:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ + {"tune_32", "%{!m64:%{!mtune=*:-mtune=%(VALUE)}}" }, \ + {"tune_64", "%{m64:%{!mtune=*:-mtune=%(VALUE)}}" }, \ {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } #else #define OPTION_DEFAULT_SPECS \ + {"cpu_32", "%{m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ + {"cpu_64", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ {"cpu", "%{!m32:%{!mcpu=*:-mcpu=%(VALUE)}}" }, \ + {"tune_32", "%{m32:%{!mtune=*:-mtune=%(VALUE)}}" }, \ + {"tune_64", "%{!m32:%{!mtune=*:-mtune=%(VALUE)}}" }, \ {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } #endif |