forked from gcc-mirror/gcc
-
Notifications
You must be signed in to change notification settings - Fork 5
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
This adds support for OpenRISC hardware floating point instructions. This is enabled with the -mhard-float option. Double-prevision floating point operations work using register pairing as specified in: https://openrisc.io/proposals/orfpx64a32. This has just been added in the OpenRISC architecture specification 1.3. This is enabled with the -mdouble-float option. Not all architectures support unordered comparisons so an option, -munordered-float is added. Currently OpenRISC does not support sf/df or df/sf conversions, but this has also just been added in architecture specification 1.3. gcc/ChangeLog: * config.gcc (or1k*-*-*): Add mhard-float, mdouble-float, msoft-float and munordered-float validations. * config/or1k/constraints.md (d): New register constraint. * config/or1k/predicates.md (fp_comparison_operator): New. * config/or1k/or1k.c (or1k_print_operand): Add support for printing 'd' operands. (or1k_expand_compare): Normalize unordered comparisons. * config/or1k/or1k.h (reg_class): Define DOUBLE_REGS. (REG_CLASS_NAMES): Add "DOUBLE_REGS". (REG_CLASS_CONTENTS): Add contents for DOUBLE_REGS. * config/or1k/or1k.md (type): Add fpu. (fpu): New instruction reservation. (F, f, fr, fi, FI, FOP, fop): New. (<fop><F:mode>3): New ALU instruction definition. (float<fi><F:mode>2): New conversion instruction definition. (fix_trunc<F:mode><fi>2): New conversion instruction definition. (fpcmpcc): New code iterator. (*sf_fp_insn): New instruction definition. (cstore<F:mode>4): New expand definition. (cbranch<F:mode>4): New expand definition. * config/or1k/or1k.opt (msoft-float, mhard-float, mdouble-float, munordered-float): New options. * doc/invoke.texi: Document msoft-float, mhard-float, mdouble-float and munordered-float.
- Loading branch information
Showing
8 changed files
with
199 additions
and
4 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters