| Message ID | 20200925152047.709901-1-richard.henderson@linaro.org |
|---|---|
| Headers | show |
| Series | softfloat: Implement float128_muladd | expand |
Ping. On 9/25/20 8:20 AM, Richard Henderson wrote: > Plus assorted cleanups, passes tests/fp/fp-test. > > Changes in v2: > * Add UInt256 type (david) > * Rewrite and inline shift256RightJamming. This keeps the whole > UInt256 in registers, avoiding long sequences of loads and stores. > * Add x86_64 assembly for double shifts. I don't know why the > compiler can't recognize this pattern, but swapping values in > and out of %cl (the only register in the base isa that can > hold a variable shift) is really ugly. > * Add ppc64 assembly. > > > r~ > > > Richard Henderson (10): > softfloat: Use mulu64 for mul64To128 > softfloat: Use int128.h for some operations > softfloat: Tidy a * b + inf return > softfloat: Add float_cmask and constants > softfloat: Inline pick_nan_muladd into its caller > softfloat: Implement float128_muladd > softfloat: Use x86_64 assembly for {add,sub}{192,256} > softfloat: Use x86_64 assembly for sh[rl]_double > softfloat: Use aarch64 assembly for {add,sub}{192,256} > softfloat: Use ppc64 assembly for {add,sub}{192,256} > > include/fpu/softfloat-macros.h | 109 +++--- > include/fpu/softfloat.h | 2 + > fpu/softfloat.c | 620 ++++++++++++++++++++++++++++++--- > tests/fp/fp-test.c | 2 +- > tests/fp/wrap.c.inc | 12 + > 5 files changed, 652 insertions(+), 93 deletions(-) >
Plus assorted cleanups, passes tests/fp/fp-test. Changes in v2: * Add UInt256 type (david) * Rewrite and inline shift256RightJamming. This keeps the whole UInt256 in registers, avoiding long sequences of loads and stores. * Add x86_64 assembly for double shifts. I don't know why the compiler can't recognize this pattern, but swapping values in and out of %cl (the only register in the base isa that can hold a variable shift) is really ugly. * Add ppc64 assembly. r~ Richard Henderson (10): softfloat: Use mulu64 for mul64To128 softfloat: Use int128.h for some operations softfloat: Tidy a * b + inf return softfloat: Add float_cmask and constants softfloat: Inline pick_nan_muladd into its caller softfloat: Implement float128_muladd softfloat: Use x86_64 assembly for {add,sub}{192,256} softfloat: Use x86_64 assembly for sh[rl]_double softfloat: Use aarch64 assembly for {add,sub}{192,256} softfloat: Use ppc64 assembly for {add,sub}{192,256} include/fpu/softfloat-macros.h | 109 +++--- include/fpu/softfloat.h | 2 + fpu/softfloat.c | 620 ++++++++++++++++++++++++++++++--- tests/fp/fp-test.c | 2 +- tests/fp/wrap.c.inc | 12 + 5 files changed, 652 insertions(+), 93 deletions(-)