target/arm: Enable FADD/FSUB (half-precision) with FEAT_SME_F8F16
These two instructions can be enabled with either FEAT_SME_F8F16 or FEAT_SME_F16F16. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> [PMM: fix && vs || mixup in feature function] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20260625015159.719300-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Richard Henderson committed
Jun 24, 2026 at 18:51 UTC
0b0364b4735d7f16539ba4e4949ddfa3593dbf2b
2 files changed
+13
-2
target/arm/cpu-features.h
+11
@@ -1610,6 +1610,11 @@ static inline bool isar_feature_aa64_sme_f8f32(const ARMISARegisters *id)
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return FIELD_EX64_IDREG(id, ID_AA64SMFR0, F8F32);
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}
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+static inline bool isar_feature_aa64_sme_f8f16(const ARMISARegisters *id)
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+{
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+ return FIELD_EX64_IDREG(id, ID_AA64SMFR0, F8F16);
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+}
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+
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static inline bool isar_feature_aa64_sme_f16f16(const ARMISARegisters *id)
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{
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return FIELD_EX64_IDREG(id, ID_AA64SMFR0, F16F16);
@@ -1781,6 +1786,12 @@ isar_feature_aa64_sme2_or_sve2_lut(const ARMISARegisters *id)
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return isar_feature_aa64_sme2_or_sve2(id) && isar_feature_aa64_lut(id);
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}
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+static inline bool
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+isar_feature_aa64_sme_f16f16_or_f8f16(const ARMISARegisters *id)
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+{
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+ return isar_feature_aa64_sme_f16f16(id) || isar_feature_aa64_sme_f8f16(id);
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+}
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+
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/*
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* Feature tests for "does this exist in either 32-bit or 64-bit?"
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*/
target/arm/tcg/translate-sme.c
+2
-2
@@ -1335,9 +1335,9 @@ static bool do_faddsub(DisasContext *s, arg_az_n *a, ARMFPStatusFlavour fpst,
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return true;
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}
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-TRANS_FEAT(FADD_nn_h, aa64_sme_f16f16, do_faddsub, a,
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+TRANS_FEAT(FADD_nn_h, aa64_sme_f16f16_or_f8f16, do_faddsub, a,
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FPST_ZA_F16, gen_helper_gvec_fadd_h)
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-TRANS_FEAT(FSUB_nn_h, aa64_sme_f16f16, do_faddsub, a,
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+TRANS_FEAT(FSUB_nn_h, aa64_sme_f16f16_or_f8f16, do_faddsub, a,
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FPST_ZA_F16, gen_helper_gvec_fsub_h)
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TRANS_FEAT(FADD_nn_s, aa64_sme2, do_faddsub, a,