This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
Hello! Attached patch fixes some fallout from IEEE support and enables -mieee for alpha. Also, the patch removes -O0 from dg-additiona-options in IEEE testsuite, as this always override default optimization flag. libgfortran/ChangeLog: 2014-07-02 Uros Bizjak <ubizjak@gmail.com> * configure.host (ieee_flags): Add -mieee for alpha*. * config/fpu-glibc.h (support_fpu_rounding_mode): Correctly handle GFC_FPE_UPWARD, GFC_FPE_DOWNWARD and GFC_FPE_TOWARDZERO. * config/fpu-aix.h (support_fpu_rounding_mode): Ditto. testsuite/ChangeLog: 2014-07-02 Uros Bizjak <ubizjak@gmail.com> * gfortran.dg/ieee/ieee_1.F90 (dg-additional-options): Remove -O0. * gfortran.dg/ieee/ieee_rounding_1.f90 (dg-additional-options): Add. Patch was tested on alphaev68-linux-gnu (uses fpu-glibc.h) and x86_64-linux-gnu. Patch was committed to mainline SVN. BTW: On alpha, it is possible to enable underflow handling: #ifdef __USE_GNU /* On later hardware, and later kernels for earlier hardware, we can forcibly underflow denormal inputs and outputs. This can speed up certain programs significantly, usually without affecting accuracy. */ enum { FE_MAP_DMZ = 1UL << 12, /* Map denorm inputs to zero */ #define FE_MAP_DMZ FE_MAP_DMZ FE_MAP_UMZ = 1UL << 13, /* Map underflowed outputs to zero */ #define FE_MAP_UMZ FE_MAP_UMZ }; #endif FX, if you care for this option, I can help test the patch and corresponding testcases. Uros.
Attachment:
f.diff.txt
Description: Text document
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |