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| author | Xi Ruoyao <xry111@xry111.site> | 2023-11-20 03:51:56 +0800 |
|---|---|---|
| committer | Xi Ruoyao <xry111@xry111.site> | 2023-11-29 15:07:09 +0800 |
| commit | 3f9eb37fb765c23ff3af8185570c56cfb6c037f3 (patch) | |
| tree | 3fc14fb332623fbb78d939db7e0c4e0733a7029d /gcc/config/arc/arc-cpus.def | |
| parent | 3c81a587ad828b60b5b9ed712f728a11cd29d6d3 (diff) | |
| download | gcc-3f9eb37fb765c23ff3af8185570c56cfb6c037f3.zip gcc-3f9eb37fb765c23ff3af8185570c56cfb6c037f3.tar.gz gcc-3f9eb37fb765c23ff3af8185570c56cfb6c037f3.tar.bz2 | |
LoongArch: Use LSX for scalar FP rounding with explicit rounding mode
In LoongArch FP base ISA there is only the frint.{s/d} instruction which
reads the global rounding mode. Utilize LSX for explicit rounding mode
even if the operand is scalar. It seems wasting the CPU power, but
still much faster than calling the library function.
gcc/ChangeLog:
* config/loongarch/simd.md (LSX_SCALAR_FRINT): New int iterator.
(VLSX_FOR_FMODE): New mode attribute.
(<simd_for_scalar_frint_pattern><mode>2): New expander,
expanding to vreplvei.{w/d} + frint{rp/rz/rm/rne}.{s.d}.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/vect-frint-scalar.c: New test.
* gcc.target/loongarch/vect-frint-scalar-no-inexact.c: New test.
Diffstat (limited to 'gcc/config/arc/arc-cpus.def')
0 files changed, 0 insertions, 0 deletions