diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2019-06-13 17:39:08 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-06-17 15:14:19 +0100 |
| commit | fd8a68cdcf81d70eebf866a132e9780d4108da9c (patch) | |
| tree | 4ccfe21c2aa68cd35610f74bfb1de8f9a921ad8b /target | |
| parent | 9bee50b498410ed6466018b26464d7384c7879e9 (diff) | |
target/arm: Stop using cpu_F0s for NEON_2RM_VABS_F
Where Neon instructions are floating point operations, we
mostly use the old VFP utility functions like gen_vfp_abs()
which work on the TCG globals cpu_F0s and cpu_F1s. The
Neon for-each-element loop conditionally loads the inputs
into either a plain old TCG temporary for most operations
or into cpu_F0s for float operations, and similarly stores
back either cpu_F0s or the temporary.
Switch NEON_2RM_VABS_F away from using cpu_F0s, and
update neon_2rm_is_float_op() accordingly.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190613163917.28589-4-peter.maydell@linaro.org
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/translate.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/target/arm/translate.c b/target/arm/translate.c index c274c8b460..a10fded1f3 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1374,14 +1374,6 @@ static TCGv_ptr get_fpstatus_ptr(int neon) return statusptr; } -static inline void gen_vfp_abs(int dp) -{ - if (dp) - gen_helper_vfp_absd(cpu_F0d, cpu_F0d); - else - gen_helper_vfp_abss(cpu_F0s, cpu_F0s); -} - static inline void gen_vfp_neg(int dp) { if (dp) @@ -4191,8 +4183,13 @@ static const uint8_t neon_3r_sizes[] = { static int neon_2rm_is_float_op(int op) { - /* Return true if this neon 2reg-misc op is float-to-float */ - return (op == NEON_2RM_VABS_F || op == NEON_2RM_VNEG_F || + /* + * Return true if this neon 2reg-misc op is float-to-float. + * This is not a property of the operation but of our code -- + * what we are asking here is "does the code for this case in + * the Neon for-each-pass loop use cpu_F0s?". + */ + return (op == NEON_2RM_VNEG_F || (op >= NEON_2RM_VRINTN && op <= NEON_2RM_VRINTZ) || op == NEON_2RM_VRINTM || (op >= NEON_2RM_VRINTP && op <= NEON_2RM_VCVTMS) || @@ -6761,7 +6758,7 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn) break; } case NEON_2RM_VABS_F: - gen_vfp_abs(0); + gen_helper_vfp_abss(tmp, tmp); break; case NEON_2RM_VNEG_F: gen_vfp_neg(0); |