S/390: Fix mtune default.
When building with --with-tune=zEC12 and calling the resulting gcc with --march=z13 (no extra -mtune), the binary would unexpectedly be compiled with -march=z13 -mtune=zEC12. This patch avoids using the default tune parameter if -march is specified as argument but the user can still explicitly state -march=z13 -mtune=zEC12. gcc/ChangeLog: 2018-06-26 Robin Dapp <rdapp@linux.vnet.ibm.com> * config/s390/s390.h (enum processor_flags): Do not use default tune parameter when -march was specified. From-SVN: r262143
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@ -1,3 +1,8 @@
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2018-06-26 Robin Dapp <rdapp@linux.vnet.ibm.com>
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* config/s390/s390.h (enum processor_flags): Do not use
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default tune parameter when -march was specified.
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2018-06-26 Jakub Jelinek <jakub@redhat.com>
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PR target/86314
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@ -205,7 +205,7 @@ enum processor_flags
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#define OPTION_DEFAULT_SPECS \
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{ "mode", "%{!mesa:%{!mzarch:-m%(VALUE)}}" }, \
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{ "arch", "%{!march=*:-march=%(VALUE)}" }, \
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{ "tune", "%{!mtune=*:-mtune=%(VALUE)}" }
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{ "tune", "%{!mtune=*:%{!march=*:-mtune=%(VALUE)}}" }
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#ifdef __s390__
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extern const char *s390_host_detect_local_cpu (int argc, const char **argv);
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