On 1/24/25 08:28, Peter Maydell wrote:
FEAT_RPRES implements an "increased precision" variant of the single
precision FRECPE and FRSQRTE instructions from an 8 bit to a 12
bit mantissa. This applies only when FPCR.AH == 1. Note that the
halfprec and double versions of these insns retain the 8 bit
precision regardless.
In this commit we add all the plumbing to make these instructions
call a new helper function when the increased-precision is in
effect. In the following commit we will provide the actual change
in behaviour in the helpers.
Signed-off-by: Peter Maydell<peter.mayd...@linaro.org>
---
target/arm/cpu-features.h | 5 +++++
target/arm/helper.h | 4 ++++
target/arm/tcg/translate-a64.c | 34 ++++++++++++++++++++++++++++++----
target/arm/tcg/translate-sve.c | 16 ++++++++++++++--
target/arm/tcg/vec_helper.c | 2 ++
target/arm/vfp_helper.c | 32 ++++++++++++++++++++++++++++++--
6 files changed, 85 insertions(+), 8 deletions(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
r~
