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| author | Dimitar Dimitrov <dimitar@dinux.eu> | 2025-08-17 21:39:17 +0300 |
|---|---|---|
| committer | Dimitar Dimitrov <dimitar@dinux.eu> | 2025-08-21 21:43:05 +0300 |
| commit | 625af54662b4ff95c40d7b91fbb047ada6b06622 (patch) | |
| tree | 0ad96c668aac627573ca384999b43559438bd107 /gcc | |
| parent | 352cc9b57b2cfd62e37c962b6d2a83ed6d4827d2 (diff) | |
| download | gcc-625af54662b4ff95c40d7b91fbb047ada6b06622.zip gcc-625af54662b4ff95c40d7b91fbb047ada6b06622.tar.gz gcc-625af54662b4ff95c40d7b91fbb047ada6b06622.tar.bz2 | |
pru: libgcc: Add software implementation for multiplication
For cores without a hardware multiplier, set respective optabs
with library functions which use software implementation of
multiplication.
The implementation was copied from the RL78 backend.
gcc/ChangeLog:
* config/pru/pru.cc (pru_init_libfuncs): Set softmpy libgcc
functions for optab multiplication entries if TARGET_OPT_MUL
option is not set.
libgcc/ChangeLog:
* config/pru/libgcc-eabi.ver: Add __pruabi_softmpyi and
__pruabi_softmpyll symbols.
* config/pru/t-pru: Add softmpy source files.
* config/pru/pru-softmpy.h: New file.
* config/pru/softmpyi.c: New file.
* config/pru/softmpyll.c: New file.
Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/pru/pru.cc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/config/pru/pru.cc b/gcc/config/pru/pru.cc index 322e319..3fdc56e 100644 --- a/gcc/config/pru/pru.cc +++ b/gcc/config/pru/pru.cc @@ -941,10 +941,19 @@ pru_init_libfuncs (void) /* Long long. */ set_optab_libfunc (ashr_optab, DImode, "__pruabi_asrll"); - set_optab_libfunc (smul_optab, DImode, "__pruabi_mpyll"); set_optab_libfunc (ashl_optab, DImode, "__pruabi_lslll"); set_optab_libfunc (lshr_optab, DImode, "__pruabi_lsrll"); + if (TARGET_OPT_MUL) + { + set_optab_libfunc (smul_optab, DImode, "__pruabi_mpyll"); + } + else + { + set_optab_libfunc (smul_optab, DImode, "__pruabi_softmpyll"); + set_optab_libfunc (smul_optab, SImode, "__pruabi_softmpyi"); + } + set_optab_libfunc (sdiv_optab, SImode, "__pruabi_divi"); set_optab_libfunc (udiv_optab, SImode, "__pruabi_divu"); set_optab_libfunc (smod_optab, SImode, "__pruabi_remi"); |