target/arm: Export bfdotadd from vec_helper.c

We will need this over in sme_helper.c.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220607203306.657998-19-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c
index 26c373e522f242c9942a05be5509a8370fdf6ff4..9a9c034e36f5f93e84e80b20d1a9cfed5faf4c3a 100644 (file)
--- a/target/arm/vec_helper.c
+++ b/target/arm/vec_helper.c
@@ -2557,7 +2557,7 @@ DO_MMLA_B(gvec_usmmla_b, do_usmmla_b)
  * BFloat16 Dot Product
  */
 
-static float32 bfdotadd(float32 sum, uint32_t e1, uint32_t e2)
+float32 bfdotadd(float32 sum, uint32_t e1, uint32_t e2)
 {
     /* FPCR is ignored for BFDOT and BFMMLA. */
     float_status bf_status = {

diff --git a/target/arm/vec_internal.h b/target/arm/vec_internal.h
index 1d527fadac12248e3ef6643a4d5f037b9e1d9f38..1f4ed80ff76efe5b00b71c596db54c82fc485d01 100644 (file)
--- a/target/arm/vec_internal.h
+++ b/target/arm/vec_internal.h
@@ -230,4 +230,17 @@ uint64_t pmull_h(uint64_t op1, uint64_t op2);
  */
 uint64_t pmull_w(uint64_t op1, uint64_t op2);
 
+/**
+ * bfdotadd:
+ * @sum: addend
+ * @e1, @e2: multiplicand vectors
+ *
+ * BFloat16 2-way dot product of @e1 & @e2, accumulating with @sum.
+ * The @e1 and @e2 operands correspond to the 32-bit source vector
+ * slots and contain two Bfloat16 values each.
+ *
+ * Corresponds to the ARM pseudocode function BFDotAdd.
+ */
+float32 bfdotadd(float32 sum, uint32_t e1, uint32_t e2);
+
 #endif /* TARGET_ARM_VEC_INTERNAL_H */