finish gbtree.cu porting

include/xgboost/linalg.h

@@ -530,17 +530,17 @@ class TensorView {
   /**
    * \brief Number of items in the tensor.
    */
-  LINALG_HD [[nodiscard]] std::size_t Size() const { return size_; }
+  LINALG_HD std::size_t Size() const { return size_; }
   /**
    * \brief Whether this is a contiguous array, both C and F contiguous returns true.
    */
-  LINALG_HD [[nodiscard]] bool Contiguous() const {
+  LINALG_HD bool Contiguous() const {
     return data_.size() == this->Size() || this->CContiguous() || this->FContiguous();
   }
   /**
    * \brief Whether it's a c-contiguous array.
    */
-  LINALG_HD [[nodiscard]] bool CContiguous() const {
+  LINALG_HD bool CContiguous() const {
     StrideT stride;
     static_assert(std::is_same<decltype(stride), decltype(stride_)>::value);
     // It's contiguous if the stride can be calculated from shape.
@@ -550,7 +550,7 @@ class TensorView {
   /**
    * \brief Whether it's a f-contiguous array.
    */
-  LINALG_HD [[nodiscard]] bool FContiguous() const {
+  LINALG_HD bool FContiguous() const {
     StrideT stride;
     static_assert(std::is_same<decltype(stride), decltype(stride_)>::value);
     // It's contiguous if the stride can be calculated from shape.

include/xgboost/span.h

@@ -114,7 +114,7 @@ namespace common {
 #define HIP_KERNEL_CHECK(cond)           \
   do {                                    \
     if (XGBOOST_EXPECT(!(cond), false)) { \
-      __trap();                           \
+      __builtin_trap();                           \
     }                                     \
   } while (0)
 
@@ -122,10 +122,17 @@ namespace common {
 
 #define __ASSERT_STR_HELPER(x) #x
 
+#if 0  /* need to fix __assert_fail, without __host__ */
 #define HIP_KERNEL_CHECK(cond)  \
   (XGBOOST_EXPECT((cond), true) \
        ? static_cast<void>(0)   \
        : __assert_fail(__ASSERT_STR_HELPER((cond)), __FILE__, __LINE__, __PRETTY_FUNCTION__))
+#else
+#define HIP_KERNEL_CHECK(cond)  \
+  (XGBOOST_EXPECT((cond), true) \
+       ? static_cast<void>(0)   \
+       : __builtin_trap())
+#endif
 
 #endif  // defined(_MSC_VER)