Fix universal gemm profiler for pk_i4_t (#1790)

* Fix universal gemm profiler for pk_i4_t

* fix

include/ck/library/utility/host_tensor.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 
@@ -44,10 +44,19 @@ std::ostream& LogRangeAsType(std::ostream& os, Range&& range, std::string delim)
         else
             os << delim;
 
-        if constexpr(std::is_same_v<T, ck::f8_t> || std::is_same_v<T, ck::bf8_t>)
+        using RangeType = ck::remove_cvref_t<decltype(v)>;
+        if constexpr(std::is_same_v<RangeType, ck::f8_t> || std::is_same_v<RangeType, ck::bf8_t> ||
+                     std::is_same_v<RangeType, ck::bhalf_t>)
         {
             os << ck::type_convert<float>(v);
         }
+        else if constexpr(std::is_same_v<RangeType, ck::pk_i4_t>)
+        {
+            const auto packed_floats = ck::type_convert<ck::float2_t>(v);
+            const ck::vector_type<float, 2> vector_of_floats{packed_floats};
+            os << vector_of_floats.template AsType<float>()[ck::Number<0>{}] << delim
+               << vector_of_floats.template AsType<float>()[ck::Number<1>{}];
+        }
         else
         {
             os << static_cast<T>(v);

include/ck/utility/type_convert.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 
@@ -465,6 +465,19 @@ inline __host__ __device__ float2_t type_convert<float2_t, f8x2_ocp_t>(f8x2_ocp_
 #endif
 }
 
+template <>
+inline __host__ __device__ float2_t type_convert<float2_t, pk_i4_t>(pk_i4_t x)
+{
+    uint8_t x_u8 = ck::bit_cast<uint8_t>(x);
+    uint8_t x_l  = (x_u8 & 0x0f) >> 0;
+    uint8_t x_h  = (x_u8 & 0xf0) >> 4;
+
+    auto l_f32 = ck::type_convert<float>(x_l);
+    auto h_f32 = ck::type_convert<float>(x_h);
+
+    return {l_f32, h_f32};
+}
+
 template <>
 inline __host__ __device__ half2_t type_convert<half2_t, float2_t>(float2_t x)
 {

profiler/include/profiler/profile_gemm_universal_impl.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2023-2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2023-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 
@@ -177,7 +177,7 @@ bool profile_gemm_universal_impl(int do_verification,
                 }
             }
 
-            if(is_same_v<BDataType, pk_i4_t> && is_same_v<ADataType, half_t>)
+            if constexpr(is_same_v<BDataType, pk_i4_t> && is_same_v<ADataType, half_t>)
             {
                 // vector pk_i4x4 permute
                 for(int i = 0; i < N; i++)
@@ -188,7 +188,7 @@ bool profile_gemm_universal_impl(int do_verification,
 
                         for(int k = 0; k < 4; k++)
                         {
-                            int i4x2         = b_k_n_permute(j + k * 2, i);
+                            int i4x2         = b_k_n_permute(j + k * 2, i).data;
                             input[k * 2 + 0] = (i4x2 >> 4) & 0xf;
                             input[k * 2 + 1] = (i4x2 >> 0) & 0xf;
                         }