[libc-commits] [clang] [libc] [Clang] Implement resource directory headers for common GPU intrinsics (PR #110179)

[Joseph Huber via libc-commits]

https://github.com/jhuber6 updated https://github.com/llvm/llvm-project/pull/110179

>From c9431203b10c930587a07eed099df9e3e4ebae00 Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Thu, 26 Sep 2024 16:47:14 -0500
Subject: [PATCH 1/6] [Clang] Implement resource directory headers for common
 GPU intrinsics

Summary:
All GPU based languages provide some way to access things like the
thread ID or other resources. However, this is spread between many
different languages and it varies between targets. The goal here is to
provide a resource directory header that just provides these in an
easier to understand way, primarily so this can be used for C/C++ code.
The interface aims to be common, to faciliate easier porting, but target
specific stuff could be put in the individual headers.
---
 clang/lib/Headers/CMakeLists.txt |  14 +++
 clang/lib/Headers/amdgpuintrin.h | 187 +++++++++++++++++++++++++++++++
 clang/lib/Headers/gpuintrin.h    |  18 +++
 clang/lib/Headers/nvptxintrin.h  | 184 ++++++++++++++++++++++++++++++
 4 files changed, 403 insertions(+)
 create mode 100644 clang/lib/Headers/amdgpuintrin.h
 create mode 100644 clang/lib/Headers/gpuintrin.h
 create mode 100644 clang/lib/Headers/nvptxintrin.h

diff --git a/clang/lib/Headers/CMakeLists.txt b/clang/lib/Headers/CMakeLists.txt
index 0211d1870b30a0..b02a47c07666c1 100644
--- a/clang/lib/Headers/CMakeLists.txt
+++ b/clang/lib/Headers/CMakeLists.txt
@@ -271,6 +271,12 @@ set(x86_files
   cpuid.h
   )
 
+set(gpu_files
+  gpuintrin.h
+  nvptxintrin.h
+  amdgpuintrin.h
+  )
+
 set(windows_only_files
   intrin0.h
   intrin.h
@@ -299,6 +305,7 @@ set(files
   ${systemz_files}
   ${ve_files}
   ${x86_files}
+  ${gpu_files}
   ${webassembly_files}
   ${windows_only_files}
   ${utility_files}
@@ -521,6 +528,7 @@ add_header_target("systemz-resource-headers" "${systemz_files};${zos_wrapper_fil
 add_header_target("ve-resource-headers" "${ve_files}")
 add_header_target("webassembly-resource-headers" "${webassembly_files}")
 add_header_target("x86-resource-headers" "${x86_files}")
+add_header_target("gpu-resource-headers" "${gpu_files}")
 
 # Other header groupings
 add_header_target("hlsl-resource-headers" ${hlsl_files})
@@ -707,6 +715,12 @@ install(
   EXCLUDE_FROM_ALL
   COMPONENT x86-resource-headers)
 
+install(
+  FILES ${gpu_files}
+  DESTINATION ${header_install_dir}
+  EXCLUDE_FROM_ALL
+  COMPONENT gpu-resource-headers)
+
 if(NOT CLANG_ENABLE_HLSL)
   set(EXCLUDE_HLSL EXCLUDE_FROM_ALL)
 endif()
diff --git a/clang/lib/Headers/amdgpuintrin.h b/clang/lib/Headers/amdgpuintrin.h
new file mode 100644
index 00000000000000..95936f86bd15b8
--- /dev/null
+++ b/clang/lib/Headers/amdgpuintrin.h
@@ -0,0 +1,187 @@
+//===-- amdgpuintrin.h - AMDPGU intrinsic functions -----------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __AMDGPUINTRIN_H
+#define __AMDGPUINTRIN_H
+
+#ifndef __AMDGPU__
+#error "This file is intended for AMDGPU targets or offloading to AMDGPU
+#endif
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#if defined(__HIP__) || defined(__CUDA__)
+#define _DEFAULT_ATTRS __attribute__((device)) __attribute__((always_inline))
+#else
+#define _DEFAULT_ATTRS __attribute__((always_inline))
+#endif
+
+#pragma omp begin declare target device_type(nohost)
+#pragma omp begin declare variant match(device = {arch(amdgcn)})
+
+// Type aliases to the address spaces used by the AMDGPU backend.
+#define _private __attribute__((opencl_private))
+#define _constant __attribute__((opencl_constant))
+#define _local __attribute__((opencl_local))
+#define _global __attribute__((opencl_global))
+
+// Attribute to declare a function as a kernel.
+#define _kernel __attribute__((amdgpu_kernel, visibility("protected")))
+
+// Returns the number of workgroups in the 'x' dimension of the grid.
+_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_x() {
+  return __builtin_amdgcn_grid_size_x() / __builtin_amdgcn_workgroup_size_x();
+}
+
+// Returns the number of workgroups in the 'y' dimension of the grid.
+_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_y() {
+  return __builtin_amdgcn_grid_size_y() / __builtin_amdgcn_workgroup_size_y();
+}
+
+// Returns the number of workgroups in the 'z' dimension of the grid.
+_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_z() {
+  return __builtin_amdgcn_grid_size_z() / __builtin_amdgcn_workgroup_size_z();
+}
+
+// Returns the total number of workgruops in the grid.
+_DEFAULT_ATTRS static inline uint64_t _get_num_blocks() {
+  return _get_num_blocks_x() * _get_num_blocks_y() * _get_num_blocks_z();
+}
+
+// Returns the 'x' dimension of the current AMD workgroup's id.
+_DEFAULT_ATTRS static inline uint32_t _get_block_id_x() {
+  return __builtin_amdgcn_workgroup_id_x();
+}
+
+// Returns the 'y' dimension of the current AMD workgroup's id.
+_DEFAULT_ATTRS static inline uint32_t _get_block_id_y() {
+  return __builtin_amdgcn_workgroup_id_y();
+}
+
+// Returns the 'z' dimension of the current AMD workgroup's id.
+_DEFAULT_ATTRS static inline uint32_t _get_block_id_z() {
+  return __builtin_amdgcn_workgroup_id_z();
+}
+
+// Returns the absolute id of the AMD workgroup.
+_DEFAULT_ATTRS static inline uint64_t _get_block_id() {
+  return _get_block_id_x() + _get_num_blocks_x() * _get_block_id_y() +
+         _get_num_blocks_x() * _get_num_blocks_y() * _get_block_id_z();
+}
+
+// Returns the number of workitems in the 'x' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_threads_x() {
+  return __builtin_amdgcn_workgroup_size_x();
+}
+
+// Returns the number of workitems in the 'y' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_threads_y() {
+  return __builtin_amdgcn_workgroup_size_y();
+}
+
+// Returns the number of workitems in the 'z' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_threads_z() {
+  return __builtin_amdgcn_workgroup_size_z();
+}
+
+// Returns the total number of workitems in the workgroup.
+_DEFAULT_ATTRS static inline uint64_t _get_num_threads() {
+  return _get_num_threads_x() * _get_num_threads_y() * _get_num_threads_z();
+}
+
+// Returns the 'x' dimension id of the workitem in the current AMD workgroup.
+_DEFAULT_ATTRS static inline uint32_t _get_thread_id_x() {
+  return __builtin_amdgcn_workitem_id_x();
+}
+
+// Returns the 'y' dimension id of the workitem in the current AMD workgroup.
+_DEFAULT_ATTRS static inline uint32_t _get_thread_id_y() {
+  return __builtin_amdgcn_workitem_id_y();
+}
+
+// Returns the 'z' dimension id of the workitem in the current AMD workgroup.
+_DEFAULT_ATTRS static inline uint32_t _get_thread_id_z() {
+  return __builtin_amdgcn_workitem_id_z();
+}
+
+// Returns the absolute id of the thread in the current AMD workgroup.
+_DEFAULT_ATTRS static inline uint64_t _get_thread_id() {
+  return _get_thread_id_x() + _get_num_threads_x() * _get_thread_id_y() +
+         _get_num_threads_x() * _get_num_threads_y() * _get_thread_id_z();
+}
+
+// Returns the size of an AMD wavefront, either 32 or 64 depending on hardware
+// and compilation options.
+_DEFAULT_ATTRS static inline uint32_t _get_lane_size() {
+  return __builtin_amdgcn_wavefrontsize();
+}
+
+// Returns the id of the thread inside of an AMD wavefront executing together.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t _get_lane_id() {
+  return __builtin_amdgcn_mbcnt_hi(~0u, __builtin_amdgcn_mbcnt_lo(~0u, 0u));
+}
+
+// Returns the bit-mask of active threads in the current wavefront.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t _get_lane_mask() {
+  return __builtin_amdgcn_read_exec();
+}
+
+// Copies the value from the first active thread in the wavefront to the rest.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
+_broadcast_value(uint64_t, uint32_t x) {
+  return __builtin_amdgcn_readfirstlane(x);
+}
+
+// Returns a bitmask of threads in the current lane for which \p x is true.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t
+_ballot(uint64_t lane_mask, bool x) {
+  // The lane_mask & gives the nvptx semantics when lane_mask is a subset of
+  // the active threads
+  return lane_mask & __builtin_amdgcn_ballot_w64(x);
+}
+
+// Waits for all the threads in the block to converge and issues a fence.
+_DEFAULT_ATTRS [[clang::convergent]] static inline void _sync_threads() {
+  __builtin_amdgcn_s_barrier();
+  __builtin_amdgcn_fence(__ATOMIC_ACQUIRE, "workgroup");
+}
+
+// Wait for all threads in the wavefront to converge, this is a noop on AMDGPU.
+_DEFAULT_ATTRS [[clang::convergent]] static inline void _sync_lane(uint64_t) {
+  __builtin_amdgcn_wave_barrier();
+}
+
+// Shuffles the the lanes inside the wavefront according to the given index.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
+_shuffle(uint64_t, uint32_t idx, uint32_t x) {
+  return __builtin_amdgcn_ds_bpermute(idx << 2, x);
+}
+
+// Returns the current value of the GPU's processor clock.
+// NOTE: The RDNA3 and RDNA2 architectures use a 20-bit cycle counter.
+_DEFAULT_ATTRS static inline uint64_t _processor_clock() {
+  return __builtin_readcyclecounter();
+}
+
+// Returns a fixed-frequency timestamp. The actual frequency is dependent on
+// the card and can only be queried via the driver.
+_DEFAULT_ATTRS static inline uint64_t _fixed_frequency_clock() {
+  return __builtin_readsteadycounter();
+}
+
+// Terminates execution of the associated wavefront.
+_DEFAULT_ATTRS [[noreturn]] static inline void _end_program() {
+  __builtin_amdgcn_endpgm();
+}
+
+#pragma omp end declare variant
+#pragma omp end declare target
+#undef _DEFAULT_ATTRS
+
+#endif // __AMDGPUINTRIN_H
diff --git a/clang/lib/Headers/gpuintrin.h b/clang/lib/Headers/gpuintrin.h
new file mode 100644
index 00000000000000..09ca48b5580327
--- /dev/null
+++ b/clang/lib/Headers/gpuintrin.h
@@ -0,0 +1,18 @@
+//===-- gpuintrin.h - Generic GPU intrinsic functions ---------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __GPUINTRIN_H
+#define __GPUINTRIN_H
+
+#if defined(__NVPTX__)
+#include <nvptxintrin.h>
+#elif defined(__AMDGPU__)
+#include <amdgpuintrin.h>
+#endif
+
+#endif // __GPUINTRIN_H
diff --git a/clang/lib/Headers/nvptxintrin.h b/clang/lib/Headers/nvptxintrin.h
new file mode 100644
index 00000000000000..a1b124ecd958ab
--- /dev/null
+++ b/clang/lib/Headers/nvptxintrin.h
@@ -0,0 +1,184 @@
+//===-- nvptxintrin.h - NVPTX intrinsic functions -------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __NVPTXINTRIN_H
+#define __NVPTXINTRIN_H
+
+#ifndef __NVPTX__
+#error "This file is intended for NVPTX targets or offloading to NVPTX
+#endif
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#if defined(__HIP__) || defined(__CUDA__)
+#define _DEFAULT_ATTRS __attribute__((device)) __attribute__((always_inline))
+#else
+#define _DEFAULT_ATTRS __attribute__((always_inline))
+#endif
+
+#pragma omp begin declare target device_type(nohost)
+#pragma omp begin declare variant match(device = {arch(nvptx64)})
+
+// Type aliases to the address spaces used by the NVPTX backend.
+#define _private __attribute__((opencl_private))
+#define _constant __attribute__((opencl_constant))
+#define _local __attribute__((opencl_local))
+#define _global __attribute__((opencl_global))
+
+// Attribute to declare a function as a kernel.
+#define _kernel __attribute__((nvptx_kernel))
+
+// Returns the number of CUDA blocks in the 'x' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_x() {
+  return __nvvm_read_ptx_sreg_nctaid_x();
+}
+
+// Returns the number of CUDA blocks in the 'y' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_y() {
+  return __nvvm_read_ptx_sreg_nctaid_y();
+}
+
+// Returns the number of CUDA blocks in the 'z' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_z() {
+  return __nvvm_read_ptx_sreg_nctaid_z();
+}
+
+// Returns the total number of CUDA blocks.
+_DEFAULT_ATTRS static inline uint64_t _get_num_blocks() {
+  return _get_num_blocks_x() * _get_num_blocks_y() * _get_num_blocks_z();
+}
+
+// Returns the 'x' dimension of the current CUDA block's id.
+_DEFAULT_ATTRS static inline uint32_t _get_block_id_x() {
+  return __nvvm_read_ptx_sreg_ctaid_x();
+}
+
+// Returns the 'y' dimension of the current CUDA block's id.
+_DEFAULT_ATTRS static inline uint32_t _get_block_id_y() {
+  return __nvvm_read_ptx_sreg_ctaid_y();
+}
+
+// Returns the 'z' dimension of the current CUDA block's id.
+_DEFAULT_ATTRS static inline uint32_t _get_block_id_z() {
+  return __nvvm_read_ptx_sreg_ctaid_z();
+}
+
+// Returns the absolute id of the CUDA block.
+_DEFAULT_ATTRS static inline uint64_t _get_block_id() {
+  return _get_block_id_x() + _get_num_blocks_x() * _get_block_id_y() +
+         _get_num_blocks_x() * _get_num_blocks_y() * _get_block_id_z();
+}
+
+// Returns the number of CUDA threads in the 'x' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_threads_x() {
+  return __nvvm_read_ptx_sreg_ntid_x();
+}
+
+// Returns the number of CUDA threads in the 'y' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_threads_y() {
+  return __nvvm_read_ptx_sreg_ntid_y();
+}
+
+// Returns the number of CUDA threads in the 'z' dimension.
+_DEFAULT_ATTRS static inline uint32_t _get_num_threads_z() {
+  return __nvvm_read_ptx_sreg_ntid_z();
+}
+
+// Returns the total number of threads in the block.
+_DEFAULT_ATTRS static inline uint64_t _get_num_threads() {
+  return _get_num_threads_x() * _get_num_threads_y() * _get_num_threads_z();
+}
+
+// Returns the 'x' dimension id of the thread in the current CUDA block.
+_DEFAULT_ATTRS static inline uint32_t _get_thread_id_x() {
+  return __nvvm_read_ptx_sreg_tid_x();
+}
+
+// Returns the 'y' dimension id of the thread in the current CUDA block.
+_DEFAULT_ATTRS static inline uint32_t _get_thread_id_y() {
+  return __nvvm_read_ptx_sreg_tid_y();
+}
+
+// Returns the 'z' dimension id of the thread in the current CUDA block.
+_DEFAULT_ATTRS static inline uint32_t _get_thread_id_z() {
+  return __nvvm_read_ptx_sreg_tid_z();
+}
+
+// Returns the absolute id of the thread in the current CUDA block.
+_DEFAULT_ATTRS static inline uint64_t _get_thread_id() {
+  return _get_thread_id_x() + _get_num_threads_x() * _get_thread_id_y() +
+         _get_num_threads_x() * _get_num_threads_y() * _get_thread_id_z();
+}
+
+// Returns the size of a CUDA warp, always 32 on NVIDIA hardware.
+_DEFAULT_ATTRS static inline uint32_t _get_lane_size() { return 32; }
+
+// Returns the id of the thread inside of a CUDA warp executing together.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t _get_lane_id() {
+  return __nvvm_read_ptx_sreg_laneid();
+}
+
+// Returns the bit-mask of active threads in the current warp.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t _get_lane_mask() {
+  return __nvvm_activemask();
+}
+
+// Copies the value from the first active thread in the warp to the rest.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
+_broadcast_value(uint64_t lane_mask, uint32_t x) {
+  uint32_t mask = static_cast<uint32_t>(lane_mask);
+  uint32_t id = __builtin_ffs(mask) - 1;
+  return __nvvm_shfl_sync_idx_i32(mask, x, id, _get_lane_size() - 1);
+}
+
+// Returns a bitmask of threads in the current lane for which \p x is true.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t
+_ballot(uint64_t lane_mask, bool x) {
+  uint32_t mask = static_cast<uint32_t>(lane_mask);
+  return __nvvm_vote_ballot_sync(mask, x);
+}
+
+// Waits for all the threads in the block to converge and issues a fence.
+_DEFAULT_ATTRS [[clang::convergent]] static inline void _sync_threads() {
+  __syncthreads();
+}
+
+// Waits for all threads in the warp to reconverge for independent scheduling.
+_DEFAULT_ATTRS [[clang::convergent]] static inline void
+_sync_lane(uint64_t mask) {
+  __nvvm_bar_warp_sync(static_cast<uint32_t>(mask));
+}
+
+// Shuffles the the lanes inside the warp according to the given index.
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
+_shuffle(uint64_t lane_mask, uint32_t idx, uint32_t x) {
+  uint32_t mask = static_cast<uint32_t>(lane_mask);
+  uint32_t bitmask = (mask >> idx) & 1;
+  return -bitmask &
+         __nvvm_shfl_sync_idx_i32(mask, x, idx, _get_lane_size() - 1);
+}
+
+// Returns the current value of the GPU's processor clock.
+_DEFAULT_ATTRS static inline uint64_t _processor_clock() {
+  return __builtin_readcyclecounter();
+}
+
+// Returns a global fixed-frequency timer at nanosecond frequency.
+_DEFAULT_ATTRS static inline uint64_t _fixed_frequency_clock() {
+  return __builtin_readsteadycounter();
+}
+
+// Terminates execution of the calling thread.
+_DEFAULT_ATTRS [[noreturn]] static inline void _end_program() { __nvvm_exit(); }
+
+#pragma omp end declare variant
+#pragma omp end declare target
+#undef _DEFAULT_ATTRS
+
+#endif // __NVPTXINTRIN_H

>From 2ee3e75841e728887f25584b0e8becbec23ee6b3 Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Thu, 3 Oct 2024 15:46:27 -0500
Subject: [PATCH 2/6] Update and address comments

---
 clang/lib/Headers/amdgpuintrin.h | 102 +++----
 clang/lib/Headers/gpuintrin.h    |  58 ++++
 clang/lib/Headers/nvptxintrin.h  | 115 +++----
 clang/test/Headers/gpuintrin.c   | 508 +++++++++++++++++++++++++++++++
 4 files changed, 642 insertions(+), 141 deletions(-)
 create mode 100644 clang/test/Headers/gpuintrin.c

diff --git a/clang/lib/Headers/amdgpuintrin.h b/clang/lib/Headers/amdgpuintrin.h
index 95936f86bd15b8..1fd7261cf4ca75 100644
--- a/clang/lib/Headers/amdgpuintrin.h
+++ b/clang/lib/Headers/amdgpuintrin.h
@@ -10,178 +10,144 @@
 #define __AMDGPUINTRIN_H
 
 #ifndef __AMDGPU__
-#error "This file is intended for AMDGPU targets or offloading to AMDGPU
+#error "This file is intended for AMDGPU targets or offloading to AMDGPU"
 #endif
 
 #include <stdbool.h>
 #include <stdint.h>
 
 #if defined(__HIP__) || defined(__CUDA__)
-#define _DEFAULT_ATTRS __attribute__((device)) __attribute__((always_inline))
-#else
-#define _DEFAULT_ATTRS __attribute__((always_inline))
+#define _DEFAULT_ATTRS __attribute__((device))
+#elif !defined(_DEFAULT_ATTRS)
+#define _DEFAULT_ATTRS
 #endif
 
 #pragma omp begin declare target device_type(nohost)
 #pragma omp begin declare variant match(device = {arch(amdgcn)})
 
 // Type aliases to the address spaces used by the AMDGPU backend.
-#define _private __attribute__((opencl_private))
-#define _constant __attribute__((opencl_constant))
-#define _local __attribute__((opencl_local))
-#define _global __attribute__((opencl_global))
+#define _Private __attribute__((opencl_private))
+#define _Constant __attribute__((opencl_constant))
+#define _Local __attribute__((opencl_local))
+#define _Global __attribute__((opencl_global))
 
 // Attribute to declare a function as a kernel.
-#define _kernel __attribute__((amdgpu_kernel, visibility("protected")))
+#define _Kernel __attribute__((amdgpu_kernel, visibility("protected")))
 
 // Returns the number of workgroups in the 'x' dimension of the grid.
-_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_x() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_x() {
   return __builtin_amdgcn_grid_size_x() / __builtin_amdgcn_workgroup_size_x();
 }
 
 // Returns the number of workgroups in the 'y' dimension of the grid.
-_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_y() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_y() {
   return __builtin_amdgcn_grid_size_y() / __builtin_amdgcn_workgroup_size_y();
 }
 
 // Returns the number of workgroups in the 'z' dimension of the grid.
-_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_z() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_z() {
   return __builtin_amdgcn_grid_size_z() / __builtin_amdgcn_workgroup_size_z();
 }
 
-// Returns the total number of workgruops in the grid.
-_DEFAULT_ATTRS static inline uint64_t _get_num_blocks() {
-  return _get_num_blocks_x() * _get_num_blocks_y() * _get_num_blocks_z();
-}
-
 // Returns the 'x' dimension of the current AMD workgroup's id.
-_DEFAULT_ATTRS static inline uint32_t _get_block_id_x() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_block_id_x() {
   return __builtin_amdgcn_workgroup_id_x();
 }
 
 // Returns the 'y' dimension of the current AMD workgroup's id.
-_DEFAULT_ATTRS static inline uint32_t _get_block_id_y() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_block_id_y() {
   return __builtin_amdgcn_workgroup_id_y();
 }
 
 // Returns the 'z' dimension of the current AMD workgroup's id.
-_DEFAULT_ATTRS static inline uint32_t _get_block_id_z() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_block_id_z() {
   return __builtin_amdgcn_workgroup_id_z();
 }
 
-// Returns the absolute id of the AMD workgroup.
-_DEFAULT_ATTRS static inline uint64_t _get_block_id() {
-  return _get_block_id_x() + _get_num_blocks_x() * _get_block_id_y() +
-         _get_num_blocks_x() * _get_num_blocks_y() * _get_block_id_z();
-}
-
 // Returns the number of workitems in the 'x' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_threads_x() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_threads_x() {
   return __builtin_amdgcn_workgroup_size_x();
 }
 
 // Returns the number of workitems in the 'y' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_threads_y() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_threads_y() {
   return __builtin_amdgcn_workgroup_size_y();
 }
 
 // Returns the number of workitems in the 'z' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_threads_z() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_threads_z() {
   return __builtin_amdgcn_workgroup_size_z();
 }
 
-// Returns the total number of workitems in the workgroup.
-_DEFAULT_ATTRS static inline uint64_t _get_num_threads() {
-  return _get_num_threads_x() * _get_num_threads_y() * _get_num_threads_z();
-}
-
 // Returns the 'x' dimension id of the workitem in the current AMD workgroup.
-_DEFAULT_ATTRS static inline uint32_t _get_thread_id_x() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_thread_id_x() {
   return __builtin_amdgcn_workitem_id_x();
 }
 
 // Returns the 'y' dimension id of the workitem in the current AMD workgroup.
-_DEFAULT_ATTRS static inline uint32_t _get_thread_id_y() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_thread_id_y() {
   return __builtin_amdgcn_workitem_id_y();
 }
 
 // Returns the 'z' dimension id of the workitem in the current AMD workgroup.
-_DEFAULT_ATTRS static inline uint32_t _get_thread_id_z() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_thread_id_z() {
   return __builtin_amdgcn_workitem_id_z();
 }
 
-// Returns the absolute id of the thread in the current AMD workgroup.
-_DEFAULT_ATTRS static inline uint64_t _get_thread_id() {
-  return _get_thread_id_x() + _get_num_threads_x() * _get_thread_id_y() +
-         _get_num_threads_x() * _get_num_threads_y() * _get_thread_id_z();
-}
-
 // Returns the size of an AMD wavefront, either 32 or 64 depending on hardware
 // and compilation options.
-_DEFAULT_ATTRS static inline uint32_t _get_lane_size() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_lanes() {
   return __builtin_amdgcn_wavefrontsize();
 }
 
 // Returns the id of the thread inside of an AMD wavefront executing together.
-_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t _get_lane_id() {
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t __gpu_lane_id() {
   return __builtin_amdgcn_mbcnt_hi(~0u, __builtin_amdgcn_mbcnt_lo(~0u, 0u));
 }
 
 // Returns the bit-mask of active threads in the current wavefront.
-_DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t _get_lane_mask() {
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t __gpu_lane_mask() {
   return __builtin_amdgcn_read_exec();
 }
 
 // Copies the value from the first active thread in the wavefront to the rest.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
-_broadcast_value(uint64_t, uint32_t x) {
-  return __builtin_amdgcn_readfirstlane(x);
+__gpu_broadcast(uint64_t __lane_mask, uint32_t __x) {
+  return __builtin_amdgcn_readfirstlane(__x);
 }
 
 // Returns a bitmask of threads in the current lane for which \p x is true.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t
-_ballot(uint64_t lane_mask, bool x) {
+__gpu_ballot(uint64_t __lane_mask, bool __x) {
   // The lane_mask & gives the nvptx semantics when lane_mask is a subset of
   // the active threads
-  return lane_mask & __builtin_amdgcn_ballot_w64(x);
+  return __lane_mask & __builtin_amdgcn_ballot_w64(__x);
 }
 
 // Waits for all the threads in the block to converge and issues a fence.
-_DEFAULT_ATTRS [[clang::convergent]] static inline void _sync_threads() {
+_DEFAULT_ATTRS [[clang::convergent]] static inline void __gpu_sync_threads() {
   __builtin_amdgcn_s_barrier();
   __builtin_amdgcn_fence(__ATOMIC_ACQUIRE, "workgroup");
 }
 
 // Wait for all threads in the wavefront to converge, this is a noop on AMDGPU.
-_DEFAULT_ATTRS [[clang::convergent]] static inline void _sync_lane(uint64_t) {
+_DEFAULT_ATTRS [[clang::convergent]] static inline void
+__gpu_sync_lane(uint64_t __lane_mask) {
   __builtin_amdgcn_wave_barrier();
 }
 
 // Shuffles the the lanes inside the wavefront according to the given index.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
-_shuffle(uint64_t, uint32_t idx, uint32_t x) {
-  return __builtin_amdgcn_ds_bpermute(idx << 2, x);
-}
-
-// Returns the current value of the GPU's processor clock.
-// NOTE: The RDNA3 and RDNA2 architectures use a 20-bit cycle counter.
-_DEFAULT_ATTRS static inline uint64_t _processor_clock() {
-  return __builtin_readcyclecounter();
-}
-
-// Returns a fixed-frequency timestamp. The actual frequency is dependent on
-// the card and can only be queried via the driver.
-_DEFAULT_ATTRS static inline uint64_t _fixed_frequency_clock() {
-  return __builtin_readsteadycounter();
+__gpu_shuffle_idx(uint64_t __lane_mask, uint32_t __idx, uint32_t __x) {
+  return __builtin_amdgcn_ds_bpermute(__idx << 2, __x);
 }
 
 // Terminates execution of the associated wavefront.
-_DEFAULT_ATTRS [[noreturn]] static inline void _end_program() {
+_DEFAULT_ATTRS [[noreturn]] static inline void __gpu_exit() {
   __builtin_amdgcn_endpgm();
 }
 
 #pragma omp end declare variant
 #pragma omp end declare target
-#undef _DEFAULT_ATTRS
 
 #endif // __AMDGPUINTRIN_H
diff --git a/clang/lib/Headers/gpuintrin.h b/clang/lib/Headers/gpuintrin.h
index 09ca48b5580327..2531ad8bba70c8 100644
--- a/clang/lib/Headers/gpuintrin.h
+++ b/clang/lib/Headers/gpuintrin.h
@@ -15,4 +15,62 @@
 #include <amdgpuintrin.h>
 #endif
 
+// Returns the total number of blocks / workgroups.
+_DEFAULT_ATTRS static inline uint64_t __gpu_num_blocks() {
+  return __gpu_num_blocks_x() * __gpu_num_blocks_y() * __gpu_num_blocks_z();
+}
+
+// Returns the absolute id of the block / workgroup.
+_DEFAULT_ATTRS static inline uint64_t __gpu_block_id() {
+  return __gpu_block_id_x() +
+         (uint64_t)__gpu_num_blocks_x() * __gpu_block_id_y() +
+         (uint64_t)__gpu_num_blocks_x() * __gpu_num_blocks_y() *
+             __gpu_block_id_z();
+}
+
+// Returns the total number of threads in the block / workgroup.
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_threads() {
+  return __gpu_num_threads_x() * __gpu_num_threads_y() * __gpu_num_threads_z();
+}
+
+// Returns the absolute id of the thread in the current block / workgroup.
+_DEFAULT_ATTRS static inline uint32_t __gpu_thread_id() {
+  return __gpu_thread_id_x() + __gpu_num_threads_x() * __gpu_thread_id_y() +
+         __gpu_num_threads_x() * __gpu_num_threads_y() * __gpu_thread_id_z();
+}
+
+// Get the first active thread inside the lane.
+_DEFAULT_ATTRS static inline uint64_t
+__gpu_first_lane_id(uint64_t __lane_mask) {
+  return __builtin_ffsll(__lane_mask) - 1;
+}
+
+// Conditional that is only true for a single thread in a lane.
+_DEFAULT_ATTRS static inline bool __gpu_is_first_lane(uint64_t __lane_mask) {
+  return __gpu_lane_id() == __gpu_first_lane_id(__lane_mask);
+}
+
+// Gets the sum of all lanes inside the warp or wavefront.
+_DEFAULT_ATTRS static inline uint32_t __gpu_lane_reduce(uint64_t __lane_mask,
+                                                        uint32_t x) {
+  for (uint32_t step = __gpu_num_lanes() / 2; step > 0; step /= 2) {
+    uint32_t index = step + __gpu_lane_id();
+    x += __gpu_shuffle_idx(__lane_mask, index, x);
+  }
+  return __gpu_broadcast(__lane_mask, x);
+}
+
+// Gets the accumulator scan of the threads in the warp or wavefront.
+_DEFAULT_ATTRS static inline uint32_t __gpu_lane_scan(uint64_t __lane_mask,
+                                                      uint32_t x) {
+  for (uint32_t step = 1; step < __gpu_num_lanes(); step *= 2) {
+    uint32_t index = __gpu_lane_id() - step;
+    uint32_t bitmask = __gpu_lane_id() >= step;
+    x += -bitmask & __gpu_shuffle_idx(__lane_mask, index, x);
+  }
+  return x;
+}
+
+#undef _DEFAULT_ATTRS
+
 #endif // __GPUINTRIN_H
diff --git a/clang/lib/Headers/nvptxintrin.h b/clang/lib/Headers/nvptxintrin.h
index a1b124ecd958ab..fc9769d4c578dd 100644
--- a/clang/lib/Headers/nvptxintrin.h
+++ b/clang/lib/Headers/nvptxintrin.h
@@ -10,175 +10,144 @@
 #define __NVPTXINTRIN_H
 
 #ifndef __NVPTX__
-#error "This file is intended for NVPTX targets or offloading to NVPTX
+#error "This file is intended for NVPTX targets or offloading to NVPTX"
 #endif
 
 #include <stdbool.h>
 #include <stdint.h>
 
 #if defined(__HIP__) || defined(__CUDA__)
-#define _DEFAULT_ATTRS __attribute__((device)) __attribute__((always_inline))
-#else
-#define _DEFAULT_ATTRS __attribute__((always_inline))
+#define _DEFAULT_ATTRS __attribute__((device))
+#elif !defined(_DEFAULT_ATTRS)
+#define _DEFAULT_ATTRS
 #endif
 
 #pragma omp begin declare target device_type(nohost)
 #pragma omp begin declare variant match(device = {arch(nvptx64)})
 
 // Type aliases to the address spaces used by the NVPTX backend.
-#define _private __attribute__((opencl_private))
-#define _constant __attribute__((opencl_constant))
-#define _local __attribute__((opencl_local))
-#define _global __attribute__((opencl_global))
+#define _Private __attribute__((opencl_private))
+#define _Constant __attribute__((opencl_constant))
+#define _Local __attribute__((opencl_local))
+#define _Global __attribute__((opencl_global))
 
 // Attribute to declare a function as a kernel.
-#define _kernel __attribute__((nvptx_kernel))
+#define _Kernel __attribute__((nvptx_kernel, visibility("protected")))
 
 // Returns the number of CUDA blocks in the 'x' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_x() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_x() {
   return __nvvm_read_ptx_sreg_nctaid_x();
 }
 
 // Returns the number of CUDA blocks in the 'y' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_y() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_y() {
   return __nvvm_read_ptx_sreg_nctaid_y();
 }
 
 // Returns the number of CUDA blocks in the 'z' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_blocks_z() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_z() {
   return __nvvm_read_ptx_sreg_nctaid_z();
 }
 
-// Returns the total number of CUDA blocks.
-_DEFAULT_ATTRS static inline uint64_t _get_num_blocks() {
-  return _get_num_blocks_x() * _get_num_blocks_y() * _get_num_blocks_z();
-}
-
 // Returns the 'x' dimension of the current CUDA block's id.
-_DEFAULT_ATTRS static inline uint32_t _get_block_id_x() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_block_id_x() {
   return __nvvm_read_ptx_sreg_ctaid_x();
 }
 
 // Returns the 'y' dimension of the current CUDA block's id.
-_DEFAULT_ATTRS static inline uint32_t _get_block_id_y() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_block_id_y() {
   return __nvvm_read_ptx_sreg_ctaid_y();
 }
 
 // Returns the 'z' dimension of the current CUDA block's id.
-_DEFAULT_ATTRS static inline uint32_t _get_block_id_z() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_block_id_z() {
   return __nvvm_read_ptx_sreg_ctaid_z();
 }
 
-// Returns the absolute id of the CUDA block.
-_DEFAULT_ATTRS static inline uint64_t _get_block_id() {
-  return _get_block_id_x() + _get_num_blocks_x() * _get_block_id_y() +
-         _get_num_blocks_x() * _get_num_blocks_y() * _get_block_id_z();
-}
-
 // Returns the number of CUDA threads in the 'x' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_threads_x() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_threads_x() {
   return __nvvm_read_ptx_sreg_ntid_x();
 }
 
 // Returns the number of CUDA threads in the 'y' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_threads_y() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_threads_y() {
   return __nvvm_read_ptx_sreg_ntid_y();
 }
 
 // Returns the number of CUDA threads in the 'z' dimension.
-_DEFAULT_ATTRS static inline uint32_t _get_num_threads_z() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_threads_z() {
   return __nvvm_read_ptx_sreg_ntid_z();
 }
 
-// Returns the total number of threads in the block.
-_DEFAULT_ATTRS static inline uint64_t _get_num_threads() {
-  return _get_num_threads_x() * _get_num_threads_y() * _get_num_threads_z();
-}
-
 // Returns the 'x' dimension id of the thread in the current CUDA block.
-_DEFAULT_ATTRS static inline uint32_t _get_thread_id_x() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_thread_id_x() {
   return __nvvm_read_ptx_sreg_tid_x();
 }
 
 // Returns the 'y' dimension id of the thread in the current CUDA block.
-_DEFAULT_ATTRS static inline uint32_t _get_thread_id_y() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_thread_id_y() {
   return __nvvm_read_ptx_sreg_tid_y();
 }
 
 // Returns the 'z' dimension id of the thread in the current CUDA block.
-_DEFAULT_ATTRS static inline uint32_t _get_thread_id_z() {
+_DEFAULT_ATTRS static inline uint32_t __gpu_thread_id_z() {
   return __nvvm_read_ptx_sreg_tid_z();
 }
 
-// Returns the absolute id of the thread in the current CUDA block.
-_DEFAULT_ATTRS static inline uint64_t _get_thread_id() {
-  return _get_thread_id_x() + _get_num_threads_x() * _get_thread_id_y() +
-         _get_num_threads_x() * _get_num_threads_y() * _get_thread_id_z();
-}
-
 // Returns the size of a CUDA warp, always 32 on NVIDIA hardware.
-_DEFAULT_ATTRS static inline uint32_t _get_lane_size() { return 32; }
+_DEFAULT_ATTRS static inline uint32_t __gpu_num_lanes() {
+  return __nvvm_read_ptx_sreg_warpsize();
+}
 
 // Returns the id of the thread inside of a CUDA warp executing together.
-_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t _get_lane_id() {
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t __gpu_lane_id() {
   return __nvvm_read_ptx_sreg_laneid();
 }
 
 // Returns the bit-mask of active threads in the current warp.
-_DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t _get_lane_mask() {
+_DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t __gpu_lane_mask() {
   return __nvvm_activemask();
 }
 
 // Copies the value from the first active thread in the warp to the rest.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
-_broadcast_value(uint64_t lane_mask, uint32_t x) {
-  uint32_t mask = static_cast<uint32_t>(lane_mask);
-  uint32_t id = __builtin_ffs(mask) - 1;
-  return __nvvm_shfl_sync_idx_i32(mask, x, id, _get_lane_size() - 1);
+__gpu_broadcast(uint64_t __lane_mask, uint32_t __x) {
+  uint32_t __mask = (uint32_t)__lane_mask;
+  uint32_t __id = __builtin_ffs(__mask) - 1;
+  return __nvvm_shfl_sync_idx_i32(__mask, __x, __id, __gpu_num_lanes() - 1);
 }
 
 // Returns a bitmask of threads in the current lane for which \p x is true.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t
-_ballot(uint64_t lane_mask, bool x) {
-  uint32_t mask = static_cast<uint32_t>(lane_mask);
-  return __nvvm_vote_ballot_sync(mask, x);
+__gpu_ballot(uint64_t __lane_mask, bool __x) {
+  uint32_t __mask = (uint32_t)__lane_mask;
+  return __nvvm_vote_ballot_sync(__mask, __x);
 }
 
 // Waits for all the threads in the block to converge and issues a fence.
-_DEFAULT_ATTRS [[clang::convergent]] static inline void _sync_threads() {
+_DEFAULT_ATTRS [[clang::convergent]] static inline void __gpu_sync_threads() {
   __syncthreads();
 }
 
 // Waits for all threads in the warp to reconverge for independent scheduling.
 _DEFAULT_ATTRS [[clang::convergent]] static inline void
-_sync_lane(uint64_t mask) {
-  __nvvm_bar_warp_sync(static_cast<uint32_t>(mask));
+__gpu_sync_lane(uint64_t __lane_mask) {
+  __nvvm_bar_warp_sync((uint32_t)__lane_mask);
 }
 
 // Shuffles the the lanes inside the warp according to the given index.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
-_shuffle(uint64_t lane_mask, uint32_t idx, uint32_t x) {
-  uint32_t mask = static_cast<uint32_t>(lane_mask);
-  uint32_t bitmask = (mask >> idx) & 1;
-  return -bitmask &
-         __nvvm_shfl_sync_idx_i32(mask, x, idx, _get_lane_size() - 1);
-}
-
-// Returns the current value of the GPU's processor clock.
-_DEFAULT_ATTRS static inline uint64_t _processor_clock() {
-  return __builtin_readcyclecounter();
-}
-
-// Returns a global fixed-frequency timer at nanosecond frequency.
-_DEFAULT_ATTRS static inline uint64_t _fixed_frequency_clock() {
-  return __builtin_readsteadycounter();
+__gpu_shuffle_idx(uint64_t __lane_mask, uint32_t __idx, uint32_t __x) {
+  uint32_t __mask = (uint32_t)__lane_mask;
+  uint32_t __bitmask = (__mask >> __idx) & 1u;
+  return -__bitmask &
+         __nvvm_shfl_sync_idx_i32(__mask, __x, __idx, __gpu_num_lanes() - 1u);
 }
 
 // Terminates execution of the calling thread.
-_DEFAULT_ATTRS [[noreturn]] static inline void _end_program() { __nvvm_exit(); }
+_DEFAULT_ATTRS [[noreturn]] static inline void __gpu_exit() { __nvvm_exit(); }
 
 #pragma omp end declare variant
 #pragma omp end declare target
-#undef _DEFAULT_ATTRS
 
 #endif // __NVPTXINTRIN_H
diff --git a/clang/test/Headers/gpuintrin.c b/clang/test/Headers/gpuintrin.c
new file mode 100644
index 00000000000000..ff5a816699ebef
--- /dev/null
+++ b/clang/test/Headers/gpuintrin.c
@@ -0,0 +1,508 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
+// RUN: %clang_cc1 -internal-isystem %S/Inputs/include \
+// RUN:   -internal-isystem %S/../../lib/Headers/ \
+// RUN:   -triple amdgcn-amd-amdhsa -emit-llvm %s -o - \
+// RUN: | FileCheck %s --check-prefix=AMDGPU
+//
+// RUN: %clang_cc1 -internal-isystem %S/Inputs/include \
+// RUN:   -internal-isystem %S/../../lib/Headers/ \
+// RUN:   -target-feature +ptx62 \
+// RUN:   -triple nvptx64-nvidia-cuda -emit-llvm %s -o - \
+// RUN: | FileCheck %s --check-prefix=NVPTX
+
+#define _DEFAULT_ATTRS __attribute__((always_inline))
+#include <gpuintrin.h>
+
+// AMDGPU-LABEL: define dso_local void @foo(
+// AMDGPU-SAME: ) #[[ATTR0:[0-9]+]] {
+// AMDGPU-NEXT:  [[ENTRY:.*:]]
+// AMDGPU-NEXT:    [[RETVAL_I116:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I114:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I112:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I110:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I19_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I17_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I15_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I12_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I9_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I_I103:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I104:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I101:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I99:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I97:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I7_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I4_I87:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I_I88:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I89:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I84:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I81:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I78:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I26_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I24_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I22_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I18_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I14_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I_I70:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I71:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I68:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I66:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I64:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I8_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I4_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I_I58:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I59:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I54:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I50:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I47:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I_I:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_I_I:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I42:%.*]] = alloca i1, align 1, addrspace(5)
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_I43:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I38:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_I39:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I32:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_I33:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[__IDX_ADDR_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[__X_ADDR_I34:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_I30:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I24:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_I25:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[__X_ADDR_I26:%.*]] = alloca i8, align 1, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_I:%.*]] = alloca i64, align 8, addrspace(5)
+// AMDGPU-NEXT:    [[__X_ADDR_I:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I48:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I47]] to ptr
+// AMDGPU-NEXT:    [[TMP0:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP1:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP0]], i32 12
+// AMDGPU-NEXT:    [[TMP2:%.*]] = load i32, ptr addrspace(4) [[TMP1]], align 4, !invariant.load [[META3:![0-9]+]]
+// AMDGPU-NEXT:    [[TMP3:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP4:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP3]], i32 12
+// AMDGPU-NEXT:    [[TMP5:%.*]] = load i16, ptr addrspace(4) [[TMP4]], align 2, !range [[RNG4:![0-9]+]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I49:%.*]] = zext i16 [[TMP5]] to i32
+// AMDGPU-NEXT:    [[DIV_I:%.*]] = udiv i32 [[TMP2]], [[CONV_I49]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I51:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I50]] to ptr
+// AMDGPU-NEXT:    [[TMP6:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP7:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP6]], i32 16
+// AMDGPU-NEXT:    [[TMP8:%.*]] = load i32, ptr addrspace(4) [[TMP7]], align 4, !invariant.load [[META3]]
+// AMDGPU-NEXT:    [[TMP9:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP10:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP9]], i32 14
+// AMDGPU-NEXT:    [[TMP11:%.*]] = load i16, ptr addrspace(4) [[TMP10]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I52:%.*]] = zext i16 [[TMP11]] to i32
+// AMDGPU-NEXT:    [[DIV_I53:%.*]] = udiv i32 [[TMP8]], [[CONV_I52]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I55:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I54]] to ptr
+// AMDGPU-NEXT:    [[TMP12:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP13:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP12]], i32 20
+// AMDGPU-NEXT:    [[TMP14:%.*]] = load i32, ptr addrspace(4) [[TMP13]], align 4, !invariant.load [[META3]]
+// AMDGPU-NEXT:    [[TMP15:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP16:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP15]], i32 16
+// AMDGPU-NEXT:    [[TMP17:%.*]] = load i16, ptr addrspace(4) [[TMP16]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I56:%.*]] = zext i16 [[TMP17]] to i32
+// AMDGPU-NEXT:    [[DIV_I57:%.*]] = udiv i32 [[TMP14]], [[CONV_I56]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I60:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I59]] to ptr
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I_I61:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I_I58]] to ptr
+// AMDGPU-NEXT:    [[TMP18:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP19:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP18]], i32 12
+// AMDGPU-NEXT:    [[TMP20:%.*]] = load i32, ptr addrspace(4) [[TMP19]], align 4, !invariant.load [[META3]]
+// AMDGPU-NEXT:    [[TMP21:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP22:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP21]], i32 12
+// AMDGPU-NEXT:    [[TMP23:%.*]] = load i16, ptr addrspace(4) [[TMP22]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I_I62:%.*]] = zext i16 [[TMP23]] to i32
+// AMDGPU-NEXT:    [[DIV_I_I:%.*]] = udiv i32 [[TMP20]], [[CONV_I_I62]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I5_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I4_I]] to ptr
+// AMDGPU-NEXT:    [[TMP24:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP25:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP24]], i32 16
+// AMDGPU-NEXT:    [[TMP26:%.*]] = load i32, ptr addrspace(4) [[TMP25]], align 4, !invariant.load [[META3]]
+// AMDGPU-NEXT:    [[TMP27:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP28:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP27]], i32 14
+// AMDGPU-NEXT:    [[TMP29:%.*]] = load i16, ptr addrspace(4) [[TMP28]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I6_I:%.*]] = zext i16 [[TMP29]] to i32
+// AMDGPU-NEXT:    [[DIV_I7_I:%.*]] = udiv i32 [[TMP26]], [[CONV_I6_I]]
+// AMDGPU-NEXT:    [[MUL_I:%.*]] = mul i32 [[DIV_I_I]], [[DIV_I7_I]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I9_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I8_I]] to ptr
+// AMDGPU-NEXT:    [[TMP30:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP31:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP30]], i32 20
+// AMDGPU-NEXT:    [[TMP32:%.*]] = load i32, ptr addrspace(4) [[TMP31]], align 4, !invariant.load [[META3]]
+// AMDGPU-NEXT:    [[TMP33:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP34:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP33]], i32 16
+// AMDGPU-NEXT:    [[TMP35:%.*]] = load i16, ptr addrspace(4) [[TMP34]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I10_I:%.*]] = zext i16 [[TMP35]] to i32
+// AMDGPU-NEXT:    [[DIV_I11_I:%.*]] = udiv i32 [[TMP32]], [[CONV_I10_I]]
+// AMDGPU-NEXT:    [[MUL3_I:%.*]] = mul i32 [[MUL_I]], [[DIV_I11_I]]
+// AMDGPU-NEXT:    [[CONV_I63:%.*]] = zext i32 [[MUL3_I]] to i64
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I65:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I64]] to ptr
+// AMDGPU-NEXT:    [[TMP36:%.*]] = call i32 @llvm.amdgcn.workgroup.id.x()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I67:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I66]] to ptr
+// AMDGPU-NEXT:    [[TMP37:%.*]] = call i32 @llvm.amdgcn.workgroup.id.y()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I69:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I68]] to ptr
+// AMDGPU-NEXT:    [[TMP38:%.*]] = call i32 @llvm.amdgcn.workgroup.id.z()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I72:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I71]] to ptr
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I23_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I22_I]] to ptr
+// AMDGPU-NEXT:    [[TMP39:%.*]] = call i32 @llvm.amdgcn.workgroup.id.x()
+// AMDGPU-NEXT:    [[CONV_I73:%.*]] = zext i32 [[TMP39]] to i64
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I15_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I14_I]] to ptr
+// AMDGPU-NEXT:    [[TMP40:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP41:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP40]], i32 12
+// AMDGPU-NEXT:    [[TMP42:%.*]] = load i32, ptr addrspace(4) [[TMP41]], align 4, !invariant.load [[META3]]
+// AMDGPU-NEXT:    [[TMP43:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP44:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP43]], i32 12
+// AMDGPU-NEXT:    [[TMP45:%.*]] = load i16, ptr addrspace(4) [[TMP44]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I16_I:%.*]] = zext i16 [[TMP45]] to i32
+// AMDGPU-NEXT:    [[DIV_I17_I:%.*]] = udiv i32 [[TMP42]], [[CONV_I16_I]]
+// AMDGPU-NEXT:    [[CONV2_I:%.*]] = zext i32 [[DIV_I17_I]] to i64
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I25_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I24_I]] to ptr
+// AMDGPU-NEXT:    [[TMP46:%.*]] = call i32 @llvm.amdgcn.workgroup.id.y()
+// AMDGPU-NEXT:    [[CONV4_I:%.*]] = zext i32 [[TMP46]] to i64
+// AMDGPU-NEXT:    [[MUL_I74:%.*]] = mul i64 [[CONV2_I]], [[CONV4_I]]
+// AMDGPU-NEXT:    [[ADD_I:%.*]] = add i64 [[CONV_I73]], [[MUL_I74]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I_I75:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I_I70]] to ptr
+// AMDGPU-NEXT:    [[TMP47:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP48:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP47]], i32 12
+// AMDGPU-NEXT:    [[TMP49:%.*]] = load i32, ptr addrspace(4) [[TMP48]], align 4, !invariant.load [[META3]]
+// AMDGPU-NEXT:    [[TMP50:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP51:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP50]], i32 12
+// AMDGPU-NEXT:    [[TMP52:%.*]] = load i16, ptr addrspace(4) [[TMP51]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I_I76:%.*]] = zext i16 [[TMP52]] to i32
+// AMDGPU-NEXT:    [[DIV_I_I77:%.*]] = udiv i32 [[TMP49]], [[CONV_I_I76]]
+// AMDGPU-NEXT:    [[CONV6_I:%.*]] = zext i32 [[DIV_I_I77]] to i64
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I19_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I18_I]] to ptr
+// AMDGPU-NEXT:    [[TMP53:%.*]] = call align 4 dereferenceable(64) ptr addrspace(4) @llvm.amdgcn.dispatch.ptr()
+// AMDGPU-NEXT:    [[TMP54:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP53]], i32 16
+// AMDGPU-NEXT:    [[TMP55:%.*]] = load i32, ptr addrspace(4) [[TMP54]], align 4, !invariant.load [[META3]]
+// AMDGPU-NEXT:    [[TMP56:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP57:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP56]], i32 14
+// AMDGPU-NEXT:    [[TMP58:%.*]] = load i16, ptr addrspace(4) [[TMP57]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I20_I:%.*]] = zext i16 [[TMP58]] to i32
+// AMDGPU-NEXT:    [[DIV_I21_I:%.*]] = udiv i32 [[TMP55]], [[CONV_I20_I]]
+// AMDGPU-NEXT:    [[CONV8_I:%.*]] = zext i32 [[DIV_I21_I]] to i64
+// AMDGPU-NEXT:    [[MUL9_I:%.*]] = mul i64 [[CONV6_I]], [[CONV8_I]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I27_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I26_I]] to ptr
+// AMDGPU-NEXT:    [[TMP59:%.*]] = call i32 @llvm.amdgcn.workgroup.id.z()
+// AMDGPU-NEXT:    [[CONV11_I:%.*]] = zext i32 [[TMP59]] to i64
+// AMDGPU-NEXT:    [[MUL12_I:%.*]] = mul i64 [[MUL9_I]], [[CONV11_I]]
+// AMDGPU-NEXT:    [[ADD13_I:%.*]] = add i64 [[ADD_I]], [[MUL12_I]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I79:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I78]] to ptr
+// AMDGPU-NEXT:    [[TMP60:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP61:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP60]], i32 12
+// AMDGPU-NEXT:    [[TMP62:%.*]] = load i16, ptr addrspace(4) [[TMP61]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I80:%.*]] = zext i16 [[TMP62]] to i32
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I82:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I81]] to ptr
+// AMDGPU-NEXT:    [[TMP63:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP64:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP63]], i32 14
+// AMDGPU-NEXT:    [[TMP65:%.*]] = load i16, ptr addrspace(4) [[TMP64]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I83:%.*]] = zext i16 [[TMP65]] to i32
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I85:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I84]] to ptr
+// AMDGPU-NEXT:    [[TMP66:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP67:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP66]], i32 16
+// AMDGPU-NEXT:    [[TMP68:%.*]] = load i16, ptr addrspace(4) [[TMP67]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I86:%.*]] = zext i16 [[TMP68]] to i32
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I90:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I89]] to ptr
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I_I91:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I_I88]] to ptr
+// AMDGPU-NEXT:    [[TMP69:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP70:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP69]], i32 12
+// AMDGPU-NEXT:    [[TMP71:%.*]] = load i16, ptr addrspace(4) [[TMP70]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I_I92:%.*]] = zext i16 [[TMP71]] to i32
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I5_I93:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I4_I87]] to ptr
+// AMDGPU-NEXT:    [[TMP72:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP73:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP72]], i32 14
+// AMDGPU-NEXT:    [[TMP74:%.*]] = load i16, ptr addrspace(4) [[TMP73]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I6_I94:%.*]] = zext i16 [[TMP74]] to i32
+// AMDGPU-NEXT:    [[MUL_I95:%.*]] = mul i32 [[CONV_I_I92]], [[CONV_I6_I94]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I8_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I7_I]] to ptr
+// AMDGPU-NEXT:    [[TMP75:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP76:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP75]], i32 16
+// AMDGPU-NEXT:    [[TMP77:%.*]] = load i16, ptr addrspace(4) [[TMP76]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I9_I:%.*]] = zext i16 [[TMP77]] to i32
+// AMDGPU-NEXT:    [[MUL3_I96:%.*]] = mul i32 [[MUL_I95]], [[CONV_I9_I]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I98:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I97]] to ptr
+// AMDGPU-NEXT:    [[TMP78:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.x()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I100:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I99]] to ptr
+// AMDGPU-NEXT:    [[TMP79:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.y()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I102:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I101]] to ptr
+// AMDGPU-NEXT:    [[TMP80:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.z()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I105:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I104]] to ptr
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I16_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I15_I]] to ptr
+// AMDGPU-NEXT:    [[TMP81:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.x()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I10_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I9_I]] to ptr
+// AMDGPU-NEXT:    [[TMP82:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP83:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP82]], i32 12
+// AMDGPU-NEXT:    [[TMP84:%.*]] = load i16, ptr addrspace(4) [[TMP83]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I11_I:%.*]] = zext i16 [[TMP84]] to i32
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I18_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I17_I]] to ptr
+// AMDGPU-NEXT:    [[TMP85:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.y()
+// AMDGPU-NEXT:    [[MUL_I106:%.*]] = mul i32 [[CONV_I11_I]], [[TMP85]]
+// AMDGPU-NEXT:    [[ADD_I107:%.*]] = add i32 [[TMP81]], [[MUL_I106]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I_I108:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I_I103]] to ptr
+// AMDGPU-NEXT:    [[TMP86:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP87:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP86]], i32 12
+// AMDGPU-NEXT:    [[TMP88:%.*]] = load i16, ptr addrspace(4) [[TMP87]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I_I109:%.*]] = zext i16 [[TMP88]] to i32
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I13_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I12_I]] to ptr
+// AMDGPU-NEXT:    [[TMP89:%.*]] = call align 8 dereferenceable(256) ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
+// AMDGPU-NEXT:    [[TMP90:%.*]] = getelementptr i8, ptr addrspace(4) [[TMP89]], i32 14
+// AMDGPU-NEXT:    [[TMP91:%.*]] = load i16, ptr addrspace(4) [[TMP90]], align 2, !range [[RNG4]], !invariant.load [[META3]], !noundef [[META3]]
+// AMDGPU-NEXT:    [[CONV_I14_I:%.*]] = zext i16 [[TMP91]] to i32
+// AMDGPU-NEXT:    [[MUL5_I:%.*]] = mul i32 [[CONV_I_I109]], [[CONV_I14_I]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I20_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I19_I]] to ptr
+// AMDGPU-NEXT:    [[TMP92:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.z()
+// AMDGPU-NEXT:    [[MUL7_I:%.*]] = mul i32 [[MUL5_I]], [[TMP92]]
+// AMDGPU-NEXT:    [[ADD8_I:%.*]] = add i32 [[ADD_I107]], [[MUL7_I]]
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I111:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I110]] to ptr
+// AMDGPU-NEXT:    [[TMP93:%.*]] = call i32 @llvm.amdgcn.wavefrontsize()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I115:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I114]] to ptr
+// AMDGPU-NEXT:    [[TMP94:%.*]] = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0)
+// AMDGPU-NEXT:    [[TMP95:%.*]] = call i32 @llvm.amdgcn.mbcnt.hi(i32 -1, i32 [[TMP94]])
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I117:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I116]] to ptr
+// AMDGPU-NEXT:    [[TMP96:%.*]] = call i64 @llvm.amdgcn.ballot.i64(i1 true)
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I]] to ptr
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_ASCAST_I:%.*]] = addrspacecast ptr addrspace(5) [[__LANE_MASK_ADDR_I]] to ptr
+// AMDGPU-NEXT:    [[__X_ADDR_ASCAST_I:%.*]] = addrspacecast ptr addrspace(5) [[__X_ADDR_I]] to ptr
+// AMDGPU-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_ASCAST_I]], align 8
+// AMDGPU-NEXT:    store i32 -1, ptr [[__X_ADDR_ASCAST_I]], align 4
+// AMDGPU-NEXT:    [[TMP97:%.*]] = load i32, ptr [[__X_ADDR_ASCAST_I]], align 4
+// AMDGPU-NEXT:    [[TMP98:%.*]] = call i32 @llvm.amdgcn.readfirstlane.i32(i32 [[TMP97]])
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I27:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I24]] to ptr
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_ASCAST_I28:%.*]] = addrspacecast ptr addrspace(5) [[__LANE_MASK_ADDR_I25]] to ptr
+// AMDGPU-NEXT:    [[__X_ADDR_ASCAST_I29:%.*]] = addrspacecast ptr addrspace(5) [[__X_ADDR_I26]] to ptr
+// AMDGPU-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_ASCAST_I28]], align 8
+// AMDGPU-NEXT:    store i8 1, ptr [[__X_ADDR_ASCAST_I29]], align 1
+// AMDGPU-NEXT:    [[TMP99:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_ASCAST_I28]], align 8
+// AMDGPU-NEXT:    [[TMP100:%.*]] = load i8, ptr [[__X_ADDR_ASCAST_I29]], align 1
+// AMDGPU-NEXT:    [[LOADEDV_I:%.*]] = trunc i8 [[TMP100]] to i1
+// AMDGPU-NEXT:    [[TMP101:%.*]] = call i64 @llvm.amdgcn.ballot.i64(i1 [[LOADEDV_I]])
+// AMDGPU-NEXT:    [[AND_I:%.*]] = and i64 [[TMP99]], [[TMP101]]
+// AMDGPU-NEXT:    call void @llvm.amdgcn.s.barrier()
+// AMDGPU-NEXT:    fence syncscope("workgroup") acquire
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_ASCAST_I31:%.*]] = addrspacecast ptr addrspace(5) [[__LANE_MASK_ADDR_I30]] to ptr
+// AMDGPU-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_ASCAST_I31]], align 8
+// AMDGPU-NEXT:    call void @llvm.amdgcn.wave.barrier()
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I35:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I32]] to ptr
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_ASCAST_I36:%.*]] = addrspacecast ptr addrspace(5) [[__LANE_MASK_ADDR_I33]] to ptr
+// AMDGPU-NEXT:    [[__IDX_ADDR_ASCAST_I:%.*]] = addrspacecast ptr addrspace(5) [[__IDX_ADDR_I]] to ptr
+// AMDGPU-NEXT:    [[__X_ADDR_ASCAST_I37:%.*]] = addrspacecast ptr addrspace(5) [[__X_ADDR_I34]] to ptr
+// AMDGPU-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_ASCAST_I36]], align 8
+// AMDGPU-NEXT:    store i32 -1, ptr [[__IDX_ADDR_ASCAST_I]], align 4
+// AMDGPU-NEXT:    store i32 -1, ptr [[__X_ADDR_ASCAST_I37]], align 4
+// AMDGPU-NEXT:    [[TMP102:%.*]] = load i32, ptr [[__IDX_ADDR_ASCAST_I]], align 4
+// AMDGPU-NEXT:    [[SHL_I:%.*]] = shl i32 [[TMP102]], 2
+// AMDGPU-NEXT:    [[TMP103:%.*]] = load i32, ptr [[__X_ADDR_ASCAST_I37]], align 4
+// AMDGPU-NEXT:    [[TMP104:%.*]] = call i32 @llvm.amdgcn.ds.bpermute(i32 [[SHL_I]], i32 [[TMP103]])
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I40:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I38]] to ptr
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_ASCAST_I41:%.*]] = addrspacecast ptr addrspace(5) [[__LANE_MASK_ADDR_I39]] to ptr
+// AMDGPU-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_ASCAST_I41]], align 8
+// AMDGPU-NEXT:    [[TMP105:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_ASCAST_I41]], align 8
+// AMDGPU-NEXT:    [[TMP106:%.*]] = call i64 @llvm.cttz.i64(i64 [[TMP105]], i1 true)
+// AMDGPU-NEXT:    [[TMP107:%.*]] = add i64 [[TMP106]], 1
+// AMDGPU-NEXT:    [[ISZERO_I:%.*]] = icmp eq i64 [[TMP105]], 0
+// AMDGPU-NEXT:    [[FFS_I:%.*]] = select i1 [[ISZERO_I]], i64 0, i64 [[TMP107]]
+// AMDGPU-NEXT:    [[CAST_I:%.*]] = trunc i64 [[FFS_I]] to i32
+// AMDGPU-NEXT:    [[SUB_I:%.*]] = sub nsw i32 [[CAST_I]], 1
+// AMDGPU-NEXT:    [[CONV_I:%.*]] = sext i32 [[SUB_I]] to i64
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I44:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I42]] to ptr
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_ASCAST_I45:%.*]] = addrspacecast ptr addrspace(5) [[__LANE_MASK_ADDR_I43]] to ptr
+// AMDGPU-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_ASCAST_I45]], align 8
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I113:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I112]] to ptr
+// AMDGPU-NEXT:    [[TMP108:%.*]] = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0)
+// AMDGPU-NEXT:    [[TMP109:%.*]] = call i32 @llvm.amdgcn.mbcnt.hi(i32 -1, i32 [[TMP108]])
+// AMDGPU-NEXT:    [[CONV_I46:%.*]] = zext i32 [[TMP109]] to i64
+// AMDGPU-NEXT:    [[TMP110:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_ASCAST_I45]], align 8
+// AMDGPU-NEXT:    [[RETVAL_ASCAST_I_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I_I]] to ptr
+// AMDGPU-NEXT:    [[__LANE_MASK_ADDR_ASCAST_I_I:%.*]] = addrspacecast ptr addrspace(5) [[__LANE_MASK_ADDR_I_I]] to ptr
+// AMDGPU-NEXT:    store i64 [[TMP110]], ptr [[__LANE_MASK_ADDR_ASCAST_I_I]], align 8
+// AMDGPU-NEXT:    [[TMP111:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_ASCAST_I_I]], align 8
+// AMDGPU-NEXT:    [[TMP112:%.*]] = call i64 @llvm.cttz.i64(i64 [[TMP111]], i1 true)
+// AMDGPU-NEXT:    [[TMP113:%.*]] = add i64 [[TMP112]], 1
+// AMDGPU-NEXT:    [[ISZERO_I_I:%.*]] = icmp eq i64 [[TMP111]], 0
+// AMDGPU-NEXT:    [[FFS_I_I:%.*]] = select i1 [[ISZERO_I_I]], i64 0, i64 [[TMP113]]
+// AMDGPU-NEXT:    [[CAST_I_I:%.*]] = trunc i64 [[FFS_I_I]] to i32
+// AMDGPU-NEXT:    [[SUB_I_I:%.*]] = sub nsw i32 [[CAST_I_I]], 1
+// AMDGPU-NEXT:    [[CONV_I_I:%.*]] = sext i32 [[SUB_I_I]] to i64
+// AMDGPU-NEXT:    [[CMP_I:%.*]] = icmp eq i64 [[CONV_I46]], [[CONV_I_I]]
+// AMDGPU-NEXT:    call void @llvm.amdgcn.endpgm()
+// AMDGPU-NEXT:    unreachable
+//
+// NVPTX-LABEL: define dso_local void @foo(
+// NVPTX-SAME: ) #[[ATTR0:[0-9]+]] {
+// NVPTX-NEXT:  [[ENTRY:.*:]]
+// NVPTX-NEXT:    [[__LANE_MASK_ADDR_I_I:%.*]] = alloca i64, align 8
+// NVPTX-NEXT:    [[__LANE_MASK_ADDR_I42:%.*]] = alloca i64, align 8
+// NVPTX-NEXT:    [[__LANE_MASK_ADDR_I37:%.*]] = alloca i64, align 8
+// NVPTX-NEXT:    [[__LANE_MASK_ADDR_I30:%.*]] = alloca i64, align 8
+// NVPTX-NEXT:    [[__IDX_ADDR_I:%.*]] = alloca i32, align 4
+// NVPTX-NEXT:    [[__X_ADDR_I31:%.*]] = alloca i32, align 4
+// NVPTX-NEXT:    [[__MASK_I32:%.*]] = alloca i32, align 4
+// NVPTX-NEXT:    [[__BITMASK_I:%.*]] = alloca i32, align 4
+// NVPTX-NEXT:    [[__LANE_MASK_ADDR_I28:%.*]] = alloca i64, align 8
+// NVPTX-NEXT:    [[__LANE_MASK_ADDR_I24:%.*]] = alloca i64, align 8
+// NVPTX-NEXT:    [[__X_ADDR_I25:%.*]] = alloca i8, align 1
+// NVPTX-NEXT:    [[__MASK_I26:%.*]] = alloca i32, align 4
+// NVPTX-NEXT:    [[__LANE_MASK_ADDR_I:%.*]] = alloca i64, align 8
+// NVPTX-NEXT:    [[__X_ADDR_I:%.*]] = alloca i32, align 4
+// NVPTX-NEXT:    [[__MASK_I:%.*]] = alloca i32, align 4
+// NVPTX-NEXT:    [[__ID_I:%.*]] = alloca i32, align 4
+// NVPTX-NEXT:    [[TMP0:%.*]] = call range(i32 1, -2147483648) i32 @llvm.nvvm.read.ptx.sreg.nctaid.x()
+// NVPTX-NEXT:    [[TMP1:%.*]] = call range(i32 1, 65536) i32 @llvm.nvvm.read.ptx.sreg.nctaid.y()
+// NVPTX-NEXT:    [[TMP2:%.*]] = call range(i32 1, 65536) i32 @llvm.nvvm.read.ptx.sreg.nctaid.z()
+// NVPTX-NEXT:    [[TMP3:%.*]] = call range(i32 1, -2147483648) i32 @llvm.nvvm.read.ptx.sreg.nctaid.x()
+// NVPTX-NEXT:    [[TMP4:%.*]] = call range(i32 1, 65536) i32 @llvm.nvvm.read.ptx.sreg.nctaid.y()
+// NVPTX-NEXT:    [[MUL_I:%.*]] = mul i32 [[TMP3]], [[TMP4]]
+// NVPTX-NEXT:    [[TMP5:%.*]] = call range(i32 1, 65536) i32 @llvm.nvvm.read.ptx.sreg.nctaid.z()
+// NVPTX-NEXT:    [[MUL3_I:%.*]] = mul i32 [[MUL_I]], [[TMP5]]
+// NVPTX-NEXT:    [[CONV_I45:%.*]] = zext i32 [[MUL3_I]] to i64
+// NVPTX-NEXT:    [[TMP6:%.*]] = call range(i32 0, 2147483647) i32 @llvm.nvvm.read.ptx.sreg.ctaid.x()
+// NVPTX-NEXT:    [[TMP7:%.*]] = call range(i32 0, 65535) i32 @llvm.nvvm.read.ptx.sreg.ctaid.y()
+// NVPTX-NEXT:    [[TMP8:%.*]] = call range(i32 0, 65535) i32 @llvm.nvvm.read.ptx.sreg.ctaid.z()
+// NVPTX-NEXT:    [[TMP9:%.*]] = call range(i32 0, 2147483647) i32 @llvm.nvvm.read.ptx.sreg.ctaid.x()
+// NVPTX-NEXT:    [[CONV_I46:%.*]] = zext i32 [[TMP9]] to i64
+// NVPTX-NEXT:    [[TMP10:%.*]] = call range(i32 1, -2147483648) i32 @llvm.nvvm.read.ptx.sreg.nctaid.x()
+// NVPTX-NEXT:    [[CONV2_I:%.*]] = zext i32 [[TMP10]] to i64
+// NVPTX-NEXT:    [[TMP11:%.*]] = call range(i32 0, 65535) i32 @llvm.nvvm.read.ptx.sreg.ctaid.y()
+// NVPTX-NEXT:    [[CONV4_I:%.*]] = zext i32 [[TMP11]] to i64
+// NVPTX-NEXT:    [[MUL_I47:%.*]] = mul i64 [[CONV2_I]], [[CONV4_I]]
+// NVPTX-NEXT:    [[ADD_I:%.*]] = add i64 [[CONV_I46]], [[MUL_I47]]
+// NVPTX-NEXT:    [[TMP12:%.*]] = call range(i32 1, -2147483648) i32 @llvm.nvvm.read.ptx.sreg.nctaid.x()
+// NVPTX-NEXT:    [[CONV6_I:%.*]] = zext i32 [[TMP12]] to i64
+// NVPTX-NEXT:    [[TMP13:%.*]] = call range(i32 1, 65536) i32 @llvm.nvvm.read.ptx.sreg.nctaid.y()
+// NVPTX-NEXT:    [[CONV8_I:%.*]] = zext i32 [[TMP13]] to i64
+// NVPTX-NEXT:    [[MUL9_I:%.*]] = mul i64 [[CONV6_I]], [[CONV8_I]]
+// NVPTX-NEXT:    [[TMP14:%.*]] = call range(i32 0, 65535) i32 @llvm.nvvm.read.ptx.sreg.ctaid.z()
+// NVPTX-NEXT:    [[CONV11_I:%.*]] = zext i32 [[TMP14]] to i64
+// NVPTX-NEXT:    [[MUL12_I:%.*]] = mul i64 [[MUL9_I]], [[CONV11_I]]
+// NVPTX-NEXT:    [[ADD13_I:%.*]] = add i64 [[ADD_I]], [[MUL12_I]]
+// NVPTX-NEXT:    [[TMP15:%.*]] = call range(i32 1, 1025) i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
+// NVPTX-NEXT:    [[TMP16:%.*]] = call range(i32 1, 1025) i32 @llvm.nvvm.read.ptx.sreg.ntid.y()
+// NVPTX-NEXT:    [[TMP17:%.*]] = call range(i32 1, 65) i32 @llvm.nvvm.read.ptx.sreg.ntid.z()
+// NVPTX-NEXT:    [[TMP18:%.*]] = call range(i32 1, 1025) i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
+// NVPTX-NEXT:    [[TMP19:%.*]] = call range(i32 1, 1025) i32 @llvm.nvvm.read.ptx.sreg.ntid.y()
+// NVPTX-NEXT:    [[MUL_I48:%.*]] = mul i32 [[TMP18]], [[TMP19]]
+// NVPTX-NEXT:    [[TMP20:%.*]] = call range(i32 1, 65) i32 @llvm.nvvm.read.ptx.sreg.ntid.z()
+// NVPTX-NEXT:    [[MUL3_I49:%.*]] = mul i32 [[MUL_I48]], [[TMP20]]
+// NVPTX-NEXT:    [[TMP21:%.*]] = call range(i32 0, 1024) i32 @llvm.nvvm.read.ptx.sreg.tid.x()
+// NVPTX-NEXT:    [[TMP22:%.*]] = call range(i32 0, 1024) i32 @llvm.nvvm.read.ptx.sreg.tid.y()
+// NVPTX-NEXT:    [[TMP23:%.*]] = call range(i32 0, 64) i32 @llvm.nvvm.read.ptx.sreg.tid.z()
+// NVPTX-NEXT:    [[TMP24:%.*]] = call range(i32 0, 1024) i32 @llvm.nvvm.read.ptx.sreg.tid.x()
+// NVPTX-NEXT:    [[TMP25:%.*]] = call range(i32 1, 1025) i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
+// NVPTX-NEXT:    [[TMP26:%.*]] = call range(i32 0, 1024) i32 @llvm.nvvm.read.ptx.sreg.tid.y()
+// NVPTX-NEXT:    [[MUL_I50:%.*]] = mul i32 [[TMP25]], [[TMP26]]
+// NVPTX-NEXT:    [[ADD_I51:%.*]] = add i32 [[TMP24]], [[MUL_I50]]
+// NVPTX-NEXT:    [[TMP27:%.*]] = call range(i32 1, 1025) i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
+// NVPTX-NEXT:    [[TMP28:%.*]] = call range(i32 1, 1025) i32 @llvm.nvvm.read.ptx.sreg.ntid.y()
+// NVPTX-NEXT:    [[MUL5_I:%.*]] = mul i32 [[TMP27]], [[TMP28]]
+// NVPTX-NEXT:    [[TMP29:%.*]] = call range(i32 0, 64) i32 @llvm.nvvm.read.ptx.sreg.tid.z()
+// NVPTX-NEXT:    [[MUL7_I:%.*]] = mul i32 [[MUL5_I]], [[TMP29]]
+// NVPTX-NEXT:    [[ADD8_I:%.*]] = add i32 [[ADD_I51]], [[MUL7_I]]
+// NVPTX-NEXT:    [[TMP30:%.*]] = call range(i32 32, 33) i32 @llvm.nvvm.read.ptx.sreg.warpsize()
+// NVPTX-NEXT:    [[TMP31:%.*]] = call range(i32 0, 32) i32 @llvm.nvvm.read.ptx.sreg.laneid()
+// NVPTX-NEXT:    [[TMP32:%.*]] = call i32 @llvm.nvvm.activemask()
+// NVPTX-NEXT:    [[CONV_I52:%.*]] = zext i32 [[TMP32]] to i64
+// NVPTX-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_I]], align 8
+// NVPTX-NEXT:    store i32 -1, ptr [[__X_ADDR_I]], align 4
+// NVPTX-NEXT:    [[TMP33:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_I]], align 8
+// NVPTX-NEXT:    [[CONV_I:%.*]] = trunc i64 [[TMP33]] to i32
+// NVPTX-NEXT:    store i32 [[CONV_I]], ptr [[__MASK_I]], align 4
+// NVPTX-NEXT:    [[TMP34:%.*]] = load i32, ptr [[__MASK_I]], align 4
+// NVPTX-NEXT:    [[TMP35:%.*]] = call i32 @llvm.cttz.i32(i32 [[TMP34]], i1 true)
+// NVPTX-NEXT:    [[TMP36:%.*]] = add i32 [[TMP35]], 1
+// NVPTX-NEXT:    [[ISZERO_I:%.*]] = icmp eq i32 [[TMP34]], 0
+// NVPTX-NEXT:    [[FFS_I:%.*]] = select i1 [[ISZERO_I]], i32 0, i32 [[TMP36]]
+// NVPTX-NEXT:    [[SUB_I:%.*]] = sub nsw i32 [[FFS_I]], 1
+// NVPTX-NEXT:    store i32 [[SUB_I]], ptr [[__ID_I]], align 4
+// NVPTX-NEXT:    [[TMP37:%.*]] = load i32, ptr [[__MASK_I]], align 4
+// NVPTX-NEXT:    [[TMP38:%.*]] = load i32, ptr [[__X_ADDR_I]], align 4
+// NVPTX-NEXT:    [[TMP39:%.*]] = load i32, ptr [[__ID_I]], align 4
+// NVPTX-NEXT:    [[TMP40:%.*]] = call range(i32 32, 33) i32 @llvm.nvvm.read.ptx.sreg.warpsize()
+// NVPTX-NEXT:    [[SUB1_I:%.*]] = sub i32 [[TMP40]], 1
+// NVPTX-NEXT:    [[TMP41:%.*]] = call i32 @llvm.nvvm.shfl.sync.idx.i32(i32 [[TMP37]], i32 [[TMP38]], i32 [[TMP39]], i32 [[SUB1_I]])
+// NVPTX-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_I24]], align 8
+// NVPTX-NEXT:    store i8 1, ptr [[__X_ADDR_I25]], align 1
+// NVPTX-NEXT:    [[TMP42:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_I24]], align 8
+// NVPTX-NEXT:    [[CONV_I27:%.*]] = trunc i64 [[TMP42]] to i32
+// NVPTX-NEXT:    store i32 [[CONV_I27]], ptr [[__MASK_I26]], align 4
+// NVPTX-NEXT:    [[TMP43:%.*]] = load i32, ptr [[__MASK_I26]], align 4
+// NVPTX-NEXT:    [[TMP44:%.*]] = load i8, ptr [[__X_ADDR_I25]], align 1
+// NVPTX-NEXT:    [[LOADEDV_I:%.*]] = trunc i8 [[TMP44]] to i1
+// NVPTX-NEXT:    [[TMP45:%.*]] = call i32 @llvm.nvvm.vote.ballot.sync(i32 [[TMP43]], i1 [[LOADEDV_I]])
+// NVPTX-NEXT:    [[CONV1_I:%.*]] = zext i32 [[TMP45]] to i64
+// NVPTX-NEXT:    call void @llvm.nvvm.barrier0()
+// NVPTX-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_I28]], align 8
+// NVPTX-NEXT:    [[TMP46:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_I28]], align 8
+// NVPTX-NEXT:    [[CONV_I29:%.*]] = trunc i64 [[TMP46]] to i32
+// NVPTX-NEXT:    call void @llvm.nvvm.bar.warp.sync(i32 [[CONV_I29]])
+// NVPTX-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_I30]], align 8
+// NVPTX-NEXT:    store i32 -1, ptr [[__IDX_ADDR_I]], align 4
+// NVPTX-NEXT:    store i32 -1, ptr [[__X_ADDR_I31]], align 4
+// NVPTX-NEXT:    [[TMP47:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_I30]], align 8
+// NVPTX-NEXT:    [[CONV_I33:%.*]] = trunc i64 [[TMP47]] to i32
+// NVPTX-NEXT:    store i32 [[CONV_I33]], ptr [[__MASK_I32]], align 4
+// NVPTX-NEXT:    [[TMP48:%.*]] = load i32, ptr [[__MASK_I32]], align 4
+// NVPTX-NEXT:    [[TMP49:%.*]] = load i32, ptr [[__IDX_ADDR_I]], align 4
+// NVPTX-NEXT:    [[SHR_I:%.*]] = lshr i32 [[TMP48]], [[TMP49]]
+// NVPTX-NEXT:    [[AND_I:%.*]] = and i32 [[SHR_I]], 1
+// NVPTX-NEXT:    store i32 [[AND_I]], ptr [[__BITMASK_I]], align 4
+// NVPTX-NEXT:    [[TMP50:%.*]] = load i32, ptr [[__BITMASK_I]], align 4
+// NVPTX-NEXT:    [[SUB_I34:%.*]] = sub i32 0, [[TMP50]]
+// NVPTX-NEXT:    [[TMP51:%.*]] = load i32, ptr [[__MASK_I32]], align 4
+// NVPTX-NEXT:    [[TMP52:%.*]] = load i32, ptr [[__X_ADDR_I31]], align 4
+// NVPTX-NEXT:    [[TMP53:%.*]] = load i32, ptr [[__IDX_ADDR_I]], align 4
+// NVPTX-NEXT:    [[TMP54:%.*]] = call range(i32 32, 33) i32 @llvm.nvvm.read.ptx.sreg.warpsize()
+// NVPTX-NEXT:    [[SUB1_I36:%.*]] = sub i32 [[TMP54]], 1
+// NVPTX-NEXT:    [[TMP55:%.*]] = call i32 @llvm.nvvm.shfl.sync.idx.i32(i32 [[TMP51]], i32 [[TMP52]], i32 [[TMP53]], i32 [[SUB1_I36]])
+// NVPTX-NEXT:    [[AND2_I:%.*]] = and i32 [[SUB_I34]], [[TMP55]]
+// NVPTX-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_I37]], align 8
+// NVPTX-NEXT:    [[TMP56:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_I37]], align 8
+// NVPTX-NEXT:    [[TMP57:%.*]] = call i64 @llvm.cttz.i64(i64 [[TMP56]], i1 true)
+// NVPTX-NEXT:    [[TMP58:%.*]] = add i64 [[TMP57]], 1
+// NVPTX-NEXT:    [[ISZERO_I38:%.*]] = icmp eq i64 [[TMP56]], 0
+// NVPTX-NEXT:    [[FFS_I39:%.*]] = select i1 [[ISZERO_I38]], i64 0, i64 [[TMP58]]
+// NVPTX-NEXT:    [[CAST_I:%.*]] = trunc i64 [[FFS_I39]] to i32
+// NVPTX-NEXT:    [[SUB_I40:%.*]] = sub nsw i32 [[CAST_I]], 1
+// NVPTX-NEXT:    [[CONV_I41:%.*]] = sext i32 [[SUB_I40]] to i64
+// NVPTX-NEXT:    store i64 -1, ptr [[__LANE_MASK_ADDR_I42]], align 8
+// NVPTX-NEXT:    [[TMP59:%.*]] = call range(i32 0, 32) i32 @llvm.nvvm.read.ptx.sreg.laneid()
+// NVPTX-NEXT:    [[CONV_I44:%.*]] = zext i32 [[TMP59]] to i64
+// NVPTX-NEXT:    [[TMP60:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_I42]], align 8
+// NVPTX-NEXT:    store i64 [[TMP60]], ptr [[__LANE_MASK_ADDR_I_I]], align 8
+// NVPTX-NEXT:    [[TMP61:%.*]] = load i64, ptr [[__LANE_MASK_ADDR_I_I]], align 8
+// NVPTX-NEXT:    [[TMP62:%.*]] = call i64 @llvm.cttz.i64(i64 [[TMP61]], i1 true)
+// NVPTX-NEXT:    [[TMP63:%.*]] = add i64 [[TMP62]], 1
+// NVPTX-NEXT:    [[ISZERO_I_I:%.*]] = icmp eq i64 [[TMP61]], 0
+// NVPTX-NEXT:    [[FFS_I_I:%.*]] = select i1 [[ISZERO_I_I]], i64 0, i64 [[TMP63]]
+// NVPTX-NEXT:    [[CAST_I_I:%.*]] = trunc i64 [[FFS_I_I]] to i32
+// NVPTX-NEXT:    [[SUB_I_I:%.*]] = sub nsw i32 [[CAST_I_I]], 1
+// NVPTX-NEXT:    [[CONV_I_I:%.*]] = sext i32 [[SUB_I_I]] to i64
+// NVPTX-NEXT:    [[CMP_I:%.*]] = icmp eq i64 [[CONV_I44]], [[CONV_I_I]]
+// NVPTX-NEXT:    call void @llvm.nvvm.exit()
+// NVPTX-NEXT:    unreachable
+//
+void foo() {
+  __gpu_num_blocks_x();
+  __gpu_num_blocks_y();
+  __gpu_num_blocks_z();
+  __gpu_num_blocks();
+  __gpu_block_id_x();
+  __gpu_block_id_y();
+  __gpu_block_id_z();
+  __gpu_block_id();
+  __gpu_num_threads_x();
+  __gpu_num_threads_y();
+  __gpu_num_threads_z();
+  __gpu_num_threads();
+  __gpu_thread_id_x();
+  __gpu_thread_id_y();
+  __gpu_thread_id_z();
+  __gpu_thread_id();
+  __gpu_num_lanes();
+  __gpu_lane_id();
+  __gpu_lane_mask();
+  __gpu_broadcast(-1, -1);
+  __gpu_ballot(-1, 1);
+  __gpu_sync_threads();
+  __gpu_sync_lane(-1);
+  __gpu_shuffle_idx(-1, -1, -1);
+  __gpu_first_lane_id(-1);
+  __gpu_is_first_lane(-1);
+  __gpu_exit();
+}
+//.
+// AMDGPU: [[META3]] = !{}
+// AMDGPU: [[RNG4]] = !{i16 1, i16 1025}
+//.

>From a28ae485d15217393a361fa9c3659cc89cbab926 Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Thu, 3 Oct 2024 16:00:43 -0500
Subject: [PATCH 3/6] Add test for compiling from different languages

---
 clang/test/Headers/gpuintrin_lang.c | 61 +++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 clang/test/Headers/gpuintrin_lang.c

diff --git a/clang/test/Headers/gpuintrin_lang.c b/clang/test/Headers/gpuintrin_lang.c
new file mode 100644
index 00000000000000..f66a9f7e1fd499
--- /dev/null
+++ b/clang/test/Headers/gpuintrin_lang.c
@@ -0,0 +1,61 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
+// RUN: %clang_cc1 -internal-isystem %S/Inputs/include \
+// RUN:   -internal-isystem %S/../../lib/Headers/cuda_wrappers \
+// RUN:   -internal-isystem %S/../../lib/Headers/ \
+// RUN:   -fcuda-is-device -triple nvptx64 -emit-llvm %s -o - \
+// RUN: | FileCheck %s --check-prefix=CUDA
+//
+// RUN: %clang_cc1 -internal-isystem %S/Inputs/include \
+// RUN:   -internal-isystem %S/../../lib/Headers/cuda_wrappers \
+// RUN:   -internal-isystem %S/../../lib/Headers/ \
+// RUN:   -fcuda-is-device -triple amdgcn -emit-llvm %s -o - \
+// RUN: | FileCheck %s --check-prefix=HIP
+//
+// RUN: %clang_cc1 -internal-isystem %S/Inputs/include \
+// RUN:   -internal-isystem %S/../../lib/Headers/ \
+// RUN:   -cl-std=CL3.0 -triple amdgcn -emit-llvm %s -o - \
+// RUN: | FileCheck %s --check-prefix=OPENCL
+//
+// RUN: %clang_cc1 -internal-isystem %S/Inputs/include \
+// RUN:   -internal-isystem %S/../../lib/Headers/ -cl-std=CL3.0 \
+// RUN:   -fopenmp -fopenmp-targets=amdgcn-amd-amdhsa \
+// RUN:   -fopenmp-is-target-device -triple amdgcn -emit-llvm %s -o - \
+// RUN: | FileCheck %s --check-prefix=OPENMP
+
+#define _DEFAULT_ATTRS __attribute__((always_inline))
+#include <gpuintrin.h>
+
+#ifdef __device__
+__device__ int foo() { return __gpu_thread_id_x(); }
+#else
+// CUDA-LABEL: define dso_local i32 @foo(
+// CUDA-SAME: ) #[[ATTR0:[0-9]+]] {
+// CUDA-NEXT:  [[ENTRY:.*:]]
+// CUDA-NEXT:    [[TMP0:%.*]] = call range(i32 0, 1024) i32 @llvm.nvvm.read.ptx.sreg.tid.x()
+// CUDA-NEXT:    ret i32 [[TMP0]]
+//
+// HIP-LABEL: define dso_local i32 @foo(
+// HIP-SAME: ) #[[ATTR0:[0-9]+]] {
+// HIP-NEXT:  [[ENTRY:.*:]]
+// HIP-NEXT:    [[RETVAL_I:%.*]] = alloca i32, align 4, addrspace(5)
+// HIP-NEXT:    [[RETVAL:%.*]] = alloca i32, align 4, addrspace(5)
+// HIP-NEXT:    [[RETVAL_ASCAST:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL]] to ptr
+// HIP-NEXT:    [[RETVAL_ASCAST_I:%.*]] = addrspacecast ptr addrspace(5) [[RETVAL_I]] to ptr
+// HIP-NEXT:    [[TMP0:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.x()
+// HIP-NEXT:    ret i32 [[TMP0]]
+//
+// OPENCL-LABEL: define dso_local i32 @foo(
+// OPENCL-SAME: ) #[[ATTR0:[0-9]+]] {
+// OPENCL-NEXT:  [[ENTRY:.*:]]
+// OPENCL-NEXT:    [[TMP0:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.x()
+// OPENCL-NEXT:    ret i32 [[TMP0]]
+//
+// OPENMP-LABEL: define hidden i32 @foo(
+// OPENMP-SAME: ) #[[ATTR0:[0-9]+]] {
+// OPENMP-NEXT:  [[ENTRY:.*:]]
+// OPENMP-NEXT:    [[TMP0:%.*]] = call noundef range(i32 0, 1024) i32 @llvm.amdgcn.workitem.id.x()
+// OPENMP-NEXT:    ret i32 [[TMP0]]
+//
+int foo() { return __gpu_thread_id_x(); }
+#pragma omp declare target to(foo)
+#endif

>From 405bb9171631087b735f7ab39d29b3c1a7096340 Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Thu, 3 Oct 2024 16:13:37 -0500
Subject: [PATCH 4/6] Add stricter atomic

---
 libc/src/__support/GPU/amdgpu/utils.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libc/src/__support/GPU/amdgpu/utils.h b/libc/src/__support/GPU/amdgpu/utils.h
index 6ab95403ca3890..f09f073c5e94bb 100644
--- a/libc/src/__support/GPU/amdgpu/utils.h
+++ b/libc/src/__support/GPU/amdgpu/utils.h
@@ -136,8 +136,8 @@ LIBC_INLINE uint32_t get_lane_size() {
 
 /// Waits for all the threads in the block to converge and issues a fence.
 [[clang::convergent]] LIBC_INLINE void sync_threads() {
+  __builtin_amdgcn_fence(__ATOMIC_SEQ_CST, "workgroup");
   __builtin_amdgcn_s_barrier();
-  __builtin_amdgcn_fence(__ATOMIC_ACQUIRE, "workgroup");
 }
 
 /// Waits for all pending memory operations to complete in program order.

>From 25ce0b030f438eb4ac5f4c2bd28e1eaa437e2637 Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Fri, 25 Oct 2024 12:08:52 -0500
Subject: [PATCH 5/6] Change to __ for C

---
 clang/lib/Headers/amdgpuintrin.h | 11 ++++++-----
 clang/lib/Headers/nvptxintrin.h  | 11 ++++++-----
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/clang/lib/Headers/amdgpuintrin.h b/clang/lib/Headers/amdgpuintrin.h
index 1fd7261cf4ca75..88ba55e4cbe8fb 100644
--- a/clang/lib/Headers/amdgpuintrin.h
+++ b/clang/lib/Headers/amdgpuintrin.h
@@ -26,13 +26,14 @@
 #pragma omp begin declare variant match(device = {arch(amdgcn)})
 
 // Type aliases to the address spaces used by the AMDGPU backend.
-#define _Private __attribute__((opencl_private))
-#define _Constant __attribute__((opencl_constant))
-#define _Local __attribute__((opencl_local))
-#define _Global __attribute__((opencl_global))
+#define __private __attribute__((opencl_private))
+#define __constant __attribute__((opencl_constant))
+#define __local __attribute__((opencl_local))
+#define __global __attribute__((opencl_global))
+#define __generic __attribute__((opencl_generic))
 
 // Attribute to declare a function as a kernel.
-#define _Kernel __attribute__((amdgpu_kernel, visibility("protected")))
+#define __kernel __attribute__((amdgpu_kernel, visibility("protected")))
 
 // Returns the number of workgroups in the 'x' dimension of the grid.
 _DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_x() {
diff --git a/clang/lib/Headers/nvptxintrin.h b/clang/lib/Headers/nvptxintrin.h
index fc9769d4c578dd..d8aefd67ccfced 100644
--- a/clang/lib/Headers/nvptxintrin.h
+++ b/clang/lib/Headers/nvptxintrin.h
@@ -26,13 +26,14 @@
 #pragma omp begin declare variant match(device = {arch(nvptx64)})
 
 // Type aliases to the address spaces used by the NVPTX backend.
-#define _Private __attribute__((opencl_private))
-#define _Constant __attribute__((opencl_constant))
-#define _Local __attribute__((opencl_local))
-#define _Global __attribute__((opencl_global))
+#define __private __attribute__((opencl_private))
+#define __constant __attribute__((opencl_constant))
+#define __local __attribute__((opencl_local))
+#define __global __attribute__((opencl_global))
+#define __generic __attribute__((opencl_generic))
 
 // Attribute to declare a function as a kernel.
-#define _Kernel __attribute__((nvptx_kernel, visibility("protected")))
+#define __kernel __attribute__((amdgpu_kernel, visibility("protected")))
 
 // Returns the number of CUDA blocks in the 'x' dimension.
 _DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_x() {

>From c06cbf89a2a40b9083c3392a2b9448edeb156c91 Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Mon, 28 Oct 2024 12:05:47 -0500
Subject: [PATCH 6/6] Update names

---
 clang/lib/Headers/amdgpuintrin.h | 16 ++++++++--------
 clang/lib/Headers/gpuintrin.h    | 24 +++++++++++++++++-------
 clang/lib/Headers/nvptxintrin.h  | 16 ++++++++--------
 clang/test/Headers/gpuintrin.c   |  4 ++--
 4 files changed, 35 insertions(+), 25 deletions(-)

diff --git a/clang/lib/Headers/amdgpuintrin.h b/clang/lib/Headers/amdgpuintrin.h
index 88ba55e4cbe8fb..6bbe0f8c89b8a3 100644
--- a/clang/lib/Headers/amdgpuintrin.h
+++ b/clang/lib/Headers/amdgpuintrin.h
@@ -26,14 +26,14 @@
 #pragma omp begin declare variant match(device = {arch(amdgcn)})
 
 // Type aliases to the address spaces used by the AMDGPU backend.
-#define __private __attribute__((opencl_private))
-#define __constant __attribute__((opencl_constant))
-#define __local __attribute__((opencl_local))
-#define __global __attribute__((opencl_global))
-#define __generic __attribute__((opencl_generic))
+#define __gpu_private __attribute__((opencl_private))
+#define __gpu_constant __attribute__((opencl_constant))
+#define __gpu_local __attribute__((opencl_local))
+#define __gpu_global __attribute__((opencl_global))
+#define __gpu_generic __attribute__((opencl_generic))
 
 // Attribute to declare a function as a kernel.
-#define __kernel __attribute__((amdgpu_kernel, visibility("protected")))
+#define __gpu_kernel __attribute__((amdgpu_kernel, visibility("protected")))
 
 // Returns the number of workgroups in the 'x' dimension of the grid.
 _DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_x() {
@@ -113,7 +113,7 @@ _DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t __gpu_lane_mask() {
 
 // Copies the value from the first active thread in the wavefront to the rest.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
-__gpu_broadcast(uint64_t __lane_mask, uint32_t __x) {
+__gpu_broadcast_u32(uint64_t __lane_mask, uint32_t __x) {
   return __builtin_amdgcn_readfirstlane(__x);
 }
 
@@ -139,7 +139,7 @@ __gpu_sync_lane(uint64_t __lane_mask) {
 
 // Shuffles the the lanes inside the wavefront according to the given index.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
-__gpu_shuffle_idx(uint64_t __lane_mask, uint32_t __idx, uint32_t __x) {
+__gpu_shuffle_idx_u32(uint64_t __lane_mask, uint32_t __idx, uint32_t __x) {
   return __builtin_amdgcn_ds_bpermute(__idx << 2, __x);
 }
 
diff --git a/clang/lib/Headers/gpuintrin.h b/clang/lib/Headers/gpuintrin.h
index 2531ad8bba70c8..2e80acdf78d285 100644
--- a/clang/lib/Headers/gpuintrin.h
+++ b/clang/lib/Headers/gpuintrin.h
@@ -5,6 +5,14 @@
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
+//
+// Provides wrappers around the clang builtins for accessing GPU hardware
+// features. The interface is intended to be portable between architectures, but
+// some targets may provide different implementations. This header can be
+// included for all the common GPU programming languages, namely OpenMP, HIP,
+// CUDA, and OpenCL.
+//
+//===----------------------------------------------------------------------===//
 
 #ifndef __GPUINTRIN_H
 #define __GPUINTRIN_H
@@ -13,6 +21,8 @@
 #include <nvptxintrin.h>
 #elif defined(__AMDGPU__)
 #include <amdgpuintrin.h>
+#else
+#error "This header is only meant to be used on GPU architectures."
 #endif
 
 // Returns the total number of blocks / workgroups.
@@ -51,22 +61,22 @@ _DEFAULT_ATTRS static inline bool __gpu_is_first_lane(uint64_t __lane_mask) {
 }
 
 // Gets the sum of all lanes inside the warp or wavefront.
-_DEFAULT_ATTRS static inline uint32_t __gpu_lane_reduce(uint64_t __lane_mask,
-                                                        uint32_t x) {
+_DEFAULT_ATTRS static inline uint32_t
+__gpu_lane_reduce_u32(uint64_t __lane_mask, uint32_t x) {
   for (uint32_t step = __gpu_num_lanes() / 2; step > 0; step /= 2) {
     uint32_t index = step + __gpu_lane_id();
-    x += __gpu_shuffle_idx(__lane_mask, index, x);
+    x += __gpu_shuffle_idx_u32(__lane_mask, index, x);
   }
-  return __gpu_broadcast(__lane_mask, x);
+  return __gpu_broadcast_u32(__lane_mask, x);
 }
 
 // Gets the accumulator scan of the threads in the warp or wavefront.
-_DEFAULT_ATTRS static inline uint32_t __gpu_lane_scan(uint64_t __lane_mask,
-                                                      uint32_t x) {
+_DEFAULT_ATTRS static inline uint32_t __gpu_lane_scan_u32(uint64_t __lane_mask,
+                                                          uint32_t x) {
   for (uint32_t step = 1; step < __gpu_num_lanes(); step *= 2) {
     uint32_t index = __gpu_lane_id() - step;
     uint32_t bitmask = __gpu_lane_id() >= step;
-    x += -bitmask & __gpu_shuffle_idx(__lane_mask, index, x);
+    x += -bitmask & __gpu_shuffle_idx_u32(__lane_mask, index, x);
   }
   return x;
 }
diff --git a/clang/lib/Headers/nvptxintrin.h b/clang/lib/Headers/nvptxintrin.h
index d8aefd67ccfced..66d236b9faf522 100644
--- a/clang/lib/Headers/nvptxintrin.h
+++ b/clang/lib/Headers/nvptxintrin.h
@@ -26,14 +26,14 @@
 #pragma omp begin declare variant match(device = {arch(nvptx64)})
 
 // Type aliases to the address spaces used by the NVPTX backend.
-#define __private __attribute__((opencl_private))
-#define __constant __attribute__((opencl_constant))
-#define __local __attribute__((opencl_local))
-#define __global __attribute__((opencl_global))
-#define __generic __attribute__((opencl_generic))
+#define __gpu_private __attribute__((opencl_private))
+#define __gpu_constant __attribute__((opencl_constant))
+#define __gpu_local __attribute__((opencl_local))
+#define __gpu_global __attribute__((opencl_global))
+#define __gpu_generic __attribute__((opencl_generic))
 
 // Attribute to declare a function as a kernel.
-#define __kernel __attribute__((amdgpu_kernel, visibility("protected")))
+#define __gpu_kernel __attribute__((amdgpu_kernel, visibility("protected")))
 
 // Returns the number of CUDA blocks in the 'x' dimension.
 _DEFAULT_ATTRS static inline uint32_t __gpu_num_blocks_x() {
@@ -112,7 +112,7 @@ _DEFAULT_ATTRS [[clang::convergent]] static inline uint64_t __gpu_lane_mask() {
 
 // Copies the value from the first active thread in the warp to the rest.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
-__gpu_broadcast(uint64_t __lane_mask, uint32_t __x) {
+__gpu_broadcast_u32(uint64_t __lane_mask, uint32_t __x) {
   uint32_t __mask = (uint32_t)__lane_mask;
   uint32_t __id = __builtin_ffs(__mask) - 1;
   return __nvvm_shfl_sync_idx_i32(__mask, __x, __id, __gpu_num_lanes() - 1);
@@ -138,7 +138,7 @@ __gpu_sync_lane(uint64_t __lane_mask) {
 
 // Shuffles the the lanes inside the warp according to the given index.
 _DEFAULT_ATTRS [[clang::convergent]] static inline uint32_t
-__gpu_shuffle_idx(uint64_t __lane_mask, uint32_t __idx, uint32_t __x) {
+__gpu_shuffle_idx_u32(uint64_t __lane_mask, uint32_t __idx, uint32_t __x) {
   uint32_t __mask = (uint32_t)__lane_mask;
   uint32_t __bitmask = (__mask >> __idx) & 1u;
   return -__bitmask &
diff --git a/clang/test/Headers/gpuintrin.c b/clang/test/Headers/gpuintrin.c
index ff5a816699ebef..4d015bb8981732 100644
--- a/clang/test/Headers/gpuintrin.c
+++ b/clang/test/Headers/gpuintrin.c
@@ -493,11 +493,11 @@ void foo() {
   __gpu_num_lanes();
   __gpu_lane_id();
   __gpu_lane_mask();
-  __gpu_broadcast(-1, -1);
+  __gpu_broadcast_u32(-1, -1);
   __gpu_ballot(-1, 1);
   __gpu_sync_threads();
   __gpu_sync_lane(-1);
-  __gpu_shuffle_idx(-1, -1, -1);
+  __gpu_shuffle_idx_u32(-1, -1, -1);
   __gpu_first_lane_id(-1);
   __gpu_is_first_lane(-1);
   __gpu_exit();