The [1/5] patch is the PR112578 fix at
https://gcc.gnu.org/pipermail/gcc-patches/2023-November/637097.html.
It has been changed to remove the nearbyint pattern (because nearbyint
should not raise FE_INEXACT even if -ffp-int-builtin-inexact).
As other patches depending on the simd.md file introduced by this, sending
it as the first of this series.
As many LASX instructions are only differentiated from the corresponding
LSX instruction with operand length, create simd.md file to contain the
RTX templates sharable by LSX and LASX. This makes the code cleaner and
easier to maintain.
The [2/5] and [3/5] patches make vector product highpart and rotate
shift operations for GNU vectors and auto vectorization.
The [4/5] patch is a simple code cleanup, with no function change.
The [5/5] patch uses LSX for FP scalar rounding operations if LSX is
available and -ffp-int-builtin-exact. We do this because the base FP
ISA does not have such instructions. Using LSX is overkill, but still
much faster than calling libc functions.
Bootstrapped and regtested on loongarch64-linux-gnu. Ok for trunk?
Xi Ruoyao (5):
LoongArch: Fix usage of LSX and LASX frint/ftint instructions
[PR112578]
LoongArch: Use standard pattern name and RTX code for LSX/LASX muh
instructions
LoongArch: Use standard pattern name and RTX code for LSX/LASX rotate
shift
LoongArch: Remove lrint_allow_inexact
LoongArch: Use LSX for scalar FP rounding with explicit rounding mode
gcc/config/loongarch/lasx.md | 283 -----------------
gcc/config/loongarch/loongarch-builtins.cc | 52 ++--
gcc/config/loongarch/loongarch.md | 12 +-
gcc/config/loongarch/lsx.md | 293 ------------------
gcc/config/loongarch/simd.md | 268 ++++++++++++++++
.../loongarch/vect-frint-no-inexact.c | 48 +++
.../loongarch/vect-frint-scalar-no-inexact.c | 23 ++
.../gcc.target/loongarch/vect-frint-scalar.c | 43 +++
.../gcc.target/loongarch/vect-frint.c | 85 +++++
.../loongarch/vect-ftint-no-inexact.c | 44 +++
.../gcc.target/loongarch/vect-ftint.c | 83 +++++
gcc/testsuite/gcc.target/loongarch/vect-muh.c | 36 +++
.../gcc.target/loongarch/vect-rotr.c | 36 +++
13 files changed, 701 insertions(+), 605 deletions(-)
create mode 100644 gcc/config/loongarch/simd.md
create mode 100644 gcc/testsuite/gcc.target/loongarch/vect-frint-no-inexact.c
create mode 100644
gcc/testsuite/gcc.target/loongarch/vect-frint-scalar-no-inexact.c
create mode 100644 gcc/testsuite/gcc.target/loongarch/vect-frint-scalar.c
create mode 100644 gcc/testsuite/gcc.target/loongarch/vect-frint.c
create mode 100644 gcc/testsuite/gcc.target/loongarch/vect-ftint-no-inexact.c
create mode 100644 gcc/testsuite/gcc.target/loongarch/vect-ftint.c
create mode 100644 gcc/testsuite/gcc.target/loongarch/vect-muh.c
create mode 100644 gcc/testsuite/gcc.target/loongarch/vect-rotr.c
--
2.42.1
