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author | Joseph Myers <joseph@codesourcery.com> | 2014-10-09 01:03:56 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2014-10-09 01:03:56 +0000 |
commit | 73e28d9c885fdfed91e6d70c4aab7e8e801818e3 (patch) | |
tree | 776c199c63bde4d28a6f38044665709686adde06 /ChangeLog | |
parent | 43059f42dbd6dd3926c33ee0cbc7583f0c3e84b9 (diff) | |
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soft-fp: Refactor exception handling for comparisons.
This patch refactors how soft-fp comparisons handle setting exceptions
for NaN operands, so that exceptions are set through the FP_CMP macros
rather than directly in the C files calling them.
The _FP_CMP* and FP_CMP* macros gain an extra argument to specify when
exceptions should be set, 0 for no exception setting (I'm not sure
this is actually needed - at least it's not needed for IEEE operations
in glibc / libgcc, but might be relevant in some cases for kernel
use), 1 for exceptions only for signaling NaNs and 2 for exceptions
for all NaNs. This argument is handled through _FP_CMP_CHECK_NAN,
newly called by the _FP_CMP* macros when a NaN is encountered. Calls
to these macros are updated, which eliminates all the existing
checking and exception setting in soft-fp *.c files in glibc.
Tested for powerpc-nofpu. (The __unord* functions have no code
changes; the __eq* / __ge* / __le* functions get slightly larger, but
I don't think that's significant.)
* soft-fp/op-common.h (_FP_CMP_CHECK_NAN): New macro.
(_FP_CMP): Add extra argument EX. Call _FP_CMP_CHECK_NAN.
(_FP_CMP_EQ): Likewise.
(_FP_CMP_UNORD): Likewise.
* soft-fp/double.h (FP_CMP_D): Add extra argument EX.
(FP_CMP_EQ_D): Likewise.
(FP_CMP_UNORD_D): Likewise.
* soft-fp/extended.h (FP_CMP_E): Likewise.
(FP_CMP_EQ_E): Likewise.
(FP_CMP_UNORD_E): Likewise.
* soft-fp/quad.h (FP_CMP_Q): Likewise.
(FP_CMP_EQ_Q): Likewise.
(FP_CMP_UNORD_Q): Likewise.
* soft-fp/single.h (FP_CMP_S): Likewise.
(FP_CMP_EQ_S): Likewise.
(FP_CMP_UNORD_S): Likewise.
* soft-fp/eqdf2.c (__eqdf2): Update call to FP_CMP_EQ_D.
* soft-fp/eqsf2.c (__eqsf2): Update call to FP_CMP_EQ_S.
* soft-fp/eqtf2.c (__eqtf2): Update call to FP_CMP_EQ_Q.
* soft-fp/gedf2.c (__gedf2): Update call to FP_CMP_D.
* soft-fp/gesf2.c (__gesf2): Update call to FP_CMP_S.
* soft-fp/getf2.c (__getf2): Update call to FP_CMP_Q.
* soft-fp/ledf2.c (__ledf2): Update call to FP_CMP_D.
* soft-fp/lesf2.c (__lesf2): Update call to FP_CMP_S.
* soft-fp/letf2.c (__letf2): Update call to FP_CMP_Q.
* soft-fp/unorddf2.c (__unorddf2): Update call to FP_CMP_UNORD_D.
* soft-fp/unordsf2.c (__unordsf2): Update call to FP_CMP_UNORD_S.
* soft-fp/unordtf2.c (__unordtf2): Update call to FP_CMP_UNORD_Q.
* sysdeps/alpha/soft-fp/ots_cmpe.c (internal_compare): Update call
to FP_CMP_Q.
* sysdeps/sparc/sparc32/soft-fp/q_cmp.c (_Q_cmp): Update call to
FP_CMP_Q.
* sysdeps/sparc/sparc32/soft-fp/q_cmpe.c (_Q_cmpe): Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_feq.c (_Q_feq): Update call to
FP_CMP_EQ_Q.
* sysdeps/sparc/sparc32/soft-fp/q_fge.c (_Q_fge): Update call to
FP_CMP_Q.
* sysdeps/sparc/sparc32/soft-fp/q_fgt.c (_Q_fgt): Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_fle.c (_Q_fle): Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_flt.c (_Q_flt): Likewise.
* sysdeps/sparc/sparc32/soft-fp/q_fne.c (_Q_fne): Update call to
FP_CMP_EQ_Q.
* sysdeps/sparc/sparc64/soft-fp/qp_cmp.c (_Qp_cmp): Update call to
FP_CMP_Q.
* sysdeps/sparc/sparc64/soft-fp/qp_cmpe.c (_Qp_cmpe): Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_feq.c (_Qp_feq): Update call to
FP_CMP_EQ_Q.
* sysdeps/sparc/sparc64/soft-fp/qp_fge.c (_Qp_fge): Update call to
FP_CMP_Q.
* sysdeps/sparc/sparc64/soft-fp/qp_fgt.c (_Qp_fgt): Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_fle.c (_Qp_fle): Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_flt.c (_Qp_flt): Likewise.
* sysdeps/sparc/sparc64/soft-fp/qp_fne.c (_Qp_fne): Update call to
FP_CMP_EQ_Q.
Diffstat (limited to 'ChangeLog')
-rw-r--r-- | ChangeLog | 55 |
1 files changed, 55 insertions, 0 deletions
@@ -1,5 +1,60 @@ 2014-10-09 Joseph Myers <joseph@codesourcery.com> + * soft-fp/op-common.h (_FP_CMP_CHECK_NAN): New macro. + (_FP_CMP): Add extra argument EX. Call _FP_CMP_CHECK_NAN. + (_FP_CMP_EQ): Likewise. + (_FP_CMP_UNORD): Likewise. + * soft-fp/double.h (FP_CMP_D): Add extra argument EX. + (FP_CMP_EQ_D): Likewise. + (FP_CMP_UNORD_D): Likewise. + * soft-fp/extended.h (FP_CMP_E): Likewise. + (FP_CMP_EQ_E): Likewise. + (FP_CMP_UNORD_E): Likewise. + * soft-fp/quad.h (FP_CMP_Q): Likewise. + (FP_CMP_EQ_Q): Likewise. + (FP_CMP_UNORD_Q): Likewise. + * soft-fp/single.h (FP_CMP_S): Likewise. + (FP_CMP_EQ_S): Likewise. + (FP_CMP_UNORD_S): Likewise. + * soft-fp/eqdf2.c (__eqdf2): Update call to FP_CMP_EQ_D. + * soft-fp/eqsf2.c (__eqsf2): Update call to FP_CMP_EQ_S. + * soft-fp/eqtf2.c (__eqtf2): Update call to FP_CMP_EQ_Q. + * soft-fp/gedf2.c (__gedf2): Update call to FP_CMP_D. + * soft-fp/gesf2.c (__gesf2): Update call to FP_CMP_S. + * soft-fp/getf2.c (__getf2): Update call to FP_CMP_Q. + * soft-fp/ledf2.c (__ledf2): Update call to FP_CMP_D. + * soft-fp/lesf2.c (__lesf2): Update call to FP_CMP_S. + * soft-fp/letf2.c (__letf2): Update call to FP_CMP_Q. + * soft-fp/unorddf2.c (__unorddf2): Update call to FP_CMP_UNORD_D. + * soft-fp/unordsf2.c (__unordsf2): Update call to FP_CMP_UNORD_S. + * soft-fp/unordtf2.c (__unordtf2): Update call to FP_CMP_UNORD_Q. + * sysdeps/alpha/soft-fp/ots_cmpe.c (internal_compare): Update call + to FP_CMP_Q. + * sysdeps/sparc/sparc32/soft-fp/q_cmp.c (_Q_cmp): Update call to + FP_CMP_Q. + * sysdeps/sparc/sparc32/soft-fp/q_cmpe.c (_Q_cmpe): Likewise. + * sysdeps/sparc/sparc32/soft-fp/q_feq.c (_Q_feq): Update call to + FP_CMP_EQ_Q. + * sysdeps/sparc/sparc32/soft-fp/q_fge.c (_Q_fge): Update call to + FP_CMP_Q. + * sysdeps/sparc/sparc32/soft-fp/q_fgt.c (_Q_fgt): Likewise. + * sysdeps/sparc/sparc32/soft-fp/q_fle.c (_Q_fle): Likewise. + * sysdeps/sparc/sparc32/soft-fp/q_flt.c (_Q_flt): Likewise. + * sysdeps/sparc/sparc32/soft-fp/q_fne.c (_Q_fne): Update call to + FP_CMP_EQ_Q. + * sysdeps/sparc/sparc64/soft-fp/qp_cmp.c (_Qp_cmp): Update call to + FP_CMP_Q. + * sysdeps/sparc/sparc64/soft-fp/qp_cmpe.c (_Qp_cmpe): Likewise. + * sysdeps/sparc/sparc64/soft-fp/qp_feq.c (_Qp_feq): Update call to + FP_CMP_EQ_Q. + * sysdeps/sparc/sparc64/soft-fp/qp_fge.c (_Qp_fge): Update call to + FP_CMP_Q. + * sysdeps/sparc/sparc64/soft-fp/qp_fgt.c (_Qp_fgt): Likewise. + * sysdeps/sparc/sparc64/soft-fp/qp_fle.c (_Qp_fle): Likewise. + * sysdeps/sparc/sparc64/soft-fp/qp_flt.c (_Qp_flt): Likewise. + * sysdeps/sparc/sparc64/soft-fp/qp_fne.c (_Qp_fne): Update call to + FP_CMP_EQ_Q. + * soft-fp/op-common.h (FP_EXTEND): When a subnormal input produces a subnormal result, set the underflow exception if trapping on underflow is enabled. |