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author | Peter Maydell | 2020-08-28 20:33:35 +0200 |
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committer | Peter Maydell | 2020-09-01 12:30:58 +0200 |
commit | ad505db233b89b7fd4b5a98b6f0e8ac8d05b11db (patch) | |
tree | 586b33b98d3e905f05030391d4807ac09269e0fb /target/arm/vec_helper.c | |
parent | target/arm: Implement fp16 for Neon VABS, VNEG of floats (diff) | |
download | qemu-ad505db233b89b7fd4b5a98b6f0e8ac8d05b11db.tar.gz qemu-ad505db233b89b7fd4b5a98b6f0e8ac8d05b11db.tar.xz qemu-ad505db233b89b7fd4b5a98b6f0e8ac8d05b11db.zip |
target/arm: Implement fp16 for VCEQ, VCGE, VCGT comparisons
Convert the Neon floating-point vector comparison ops VCEQ,
VCGE and VCGT over to using a gvec helper and use this to
implement the fp16 case.
(We put the float16_ceq() etc functions above the DO_2OP()
macro definition because later when we convert the
compare-against-zero instructions we'll want their
definitions to be visible at that point in the source file.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200828183354.27913-27-peter.maydell@linaro.org
Diffstat (limited to 'target/arm/vec_helper.c')
-rw-r--r-- | target/arm/vec_helper.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c index 988d5784e8..f60968f499 100644 --- a/target/arm/vec_helper.c +++ b/target/arm/vec_helper.c @@ -656,6 +656,41 @@ void HELPER(gvec_fcmlad)(void *vd, void *vn, void *vm, clear_tail(d, opr_sz, simd_maxsz(desc)); } +/* + * Floating point comparisons producing an integer result (all 1s or all 0s). + * Note that EQ doesn't signal InvalidOp for QNaNs but GE and GT do. + * Softfloat routines return 0/1, which we convert to the 0/-1 Neon requires. + */ +static uint16_t float16_ceq(float16 op1, float16 op2, float_status *stat) +{ + return -float16_eq_quiet(op1, op2, stat); +} + +static uint32_t float32_ceq(float32 op1, float32 op2, float_status *stat) +{ + return -float32_eq_quiet(op1, op2, stat); +} + +static uint16_t float16_cge(float16 op1, float16 op2, float_status *stat) +{ + return -float16_le(op2, op1, stat); +} + +static uint32_t float32_cge(float32 op1, float32 op2, float_status *stat) +{ + return -float32_le(op2, op1, stat); +} + +static uint16_t float16_cgt(float16 op1, float16 op2, float_status *stat) +{ + return -float16_lt(op2, op1, stat); +} + +static uint32_t float32_cgt(float32 op1, float32 op2, float_status *stat) +{ + return -float32_lt(op2, op1, stat); +} + #define DO_2OP(NAME, FUNC, TYPE) \ void HELPER(NAME)(void *vd, void *vn, void *stat, uint32_t desc) \ { \ @@ -747,6 +782,15 @@ DO_3OP(gvec_ftsmul_d, float64_ftsmul, float64) DO_3OP(gvec_fabd_h, float16_abd, float16) DO_3OP(gvec_fabd_s, float32_abd, float32) +DO_3OP(gvec_fceq_h, float16_ceq, float16) +DO_3OP(gvec_fceq_s, float32_ceq, float32) + +DO_3OP(gvec_fcge_h, float16_cge, float16) +DO_3OP(gvec_fcge_s, float32_cge, float32) + +DO_3OP(gvec_fcgt_h, float16_cgt, float16) +DO_3OP(gvec_fcgt_s, float32_cgt, float32) + #ifdef TARGET_AARCH64 DO_3OP(gvec_recps_h, helper_recpsf_f16, float16) |