Add HVX IEEE floating-point miscellaneous instructions:
- vassign_fp (vfmv): vector move
- vfneg_hf, vfneg_sf: vector floating-point negate
- vabs_hf, vabs_sf: vector absolute value

Signed-off-by: Matheus Tavares Bernardino <matheus.bernardino@oss.qualcomm.com>
---
 target/hexagon/mmvec/kvx_ieee.h              |  3 +++
 target/hexagon/imported/mmvec/encode_ext.def |  7 +++++++
 target/hexagon/imported/mmvec/ext.idef       | 14 ++++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/target/hexagon/mmvec/kvx_ieee.h b/target/hexagon/mmvec/kvx_ieee.h
index 78f546eb8e..263feb7e94 100644
--- a/target/hexagon/mmvec/kvx_ieee.h
+++ b/target/hexagon/mmvec/kvx_ieee.h
@@ -13,6 +13,9 @@
 #define FP32_DEF_NAN      0x7FFFFFFF
 #define FP16_DEF_NAN      0x7FFF

+#define signF32UI(a) ((bool)((uint32_t)(a) >> 31))
+#define signF16UI(a) ((bool)((uint16_t)(a) >> 15))

diff --git a/target/hexagon/imported/mmvec/ext.idef b/target/hexagon/imported/mmvec/ext.idef
index 43153366b1..5ef5baa404 100644
--- a/target/hexagon/imported/mmvec/ext.idef
+++ b/target/hexagon/imported/mmvec/ext.idef
@@ -3018,6 +3018,20 @@ ITERATOR_INSN_ANY_SLOT_2SRC(16,vmax_hf,"Vd32.hf=vmax(Vu32.hf,Vv32.hf)", \
 ITERATOR_INSN_ANY_SLOT_2SRC(16,vmin_hf,"Vd32.hf=vmin(Vu32.hf,Vv32.hf)", \
     "Vector min of hf input", VdV.hf[i] = qf_min_hf(VuV.hf[i], VvV.hf[i], &env->fp_status))

+/* IEEE FP move, negate, abs instructions */
+ITERATOR_INSN_IEEE_FP_16_32_LATE(32, vassign_fp, "Vd32.w=vfmv(Vu32.w)", \
+    "Vector IEEE move", VdV.w[i]  = VuV.w[i])
+ITERATOR_INSN_IEEE_FP_16_32_LATE(16, vfneg_hf, "Vd32.hf=vfneg(Vu32.hf)", \
+    "Vector IEEE neg: hf", VdV.hf[i] = (VuV.hf[i] ^ 0x8000))

+ITERATOR_INSN_IEEE_FP_16_32_LATE(32, vfneg_sf, "Vd32.sf=vfneg(Vu32.sf)", \
+    "Vector IEEE neg: sf", VdV.sf[i] = (VuV.sf[i] ^ 0x80000000))

+ITERATOR_INSN_IEEE_FP_16_32_LATE(16, vabs_hf,  "Vd32.hf=vabs(Vu32.hf)", \
+    "Vector IEEE abs: hf", \
+    VdV.hf[i] = ((signF16UI(VuV.hf[i])) ? (VuV.hf[i] ^ 0x8000) : VuV.hf[i]))

+ITERATOR_INSN_IEEE_FP_16_32_LATE(32, vabs_sf,  "Vd32.sf=vabs(Vu32.sf)", \
+    "Vector IEEE abs: sf", \
+    VdV.sf[i] = ((signF32UI(VuV.sf[i])) ? (VuV.sf[i] ^ 0x80000000) : VuV.sf[i]))