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| author | Alex MacLean <amaclean@nvidia.com> | 2024-09-28 14:13:17 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-09-28 14:13:17 -0700 |
| commit | e7621f4199877b866977829c73a9edefe5e0cbab (patch) | |
| tree | c79ba39190d06d4f5432cacdd0db7b46c75a5200 /llvm/docs | |
| parent | e9c0c6604e47a7cda323544217c056f7f5aec888 (diff) | |
| download | llvm-e7621f4199877b866977829c73a9edefe5e0cbab.zip llvm-e7621f4199877b866977829c73a9edefe5e0cbab.tar.gz llvm-e7621f4199877b866977829c73a9edefe5e0cbab.tar.bz2 | |
Reland "[NVVM] Upgrade nvvm.ptr.* intrinics to addrspace cast" (#110262)
Remove the following intrinsics which can be trivially replaced with an
`addrspacecast`
* llvm.nvvm.ptr.gen.to.global
* llvm.nvvm.ptr.gen.to.shared
* llvm.nvvm.ptr.gen.to.constant
* llvm.nvvm.ptr.gen.to.local
* llvm.nvvm.ptr.global.to.gen
* llvm.nvvm.ptr.shared.to.gen
* llvm.nvvm.ptr.constant.to.gen
* llvm.nvvm.ptr.local.to.gen
Also, cleanup the NVPTX lowering of `addrspacecast` making it more
concise.
This was reverted to avoid conflicts while reverting #107655. Re-landing
unchanged.
Diffstat (limited to 'llvm/docs')
| -rw-r--r-- | llvm/docs/NVPTXUsage.rst | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/llvm/docs/NVPTXUsage.rst b/llvm/docs/NVPTXUsage.rst index 3a566bb..8b0b05c 100644 --- a/llvm/docs/NVPTXUsage.rst +++ b/llvm/docs/NVPTXUsage.rst @@ -127,69 +127,6 @@ Example: 64-bit PTX for CUDA Driver API: ``nvptx64-nvidia-cuda`` NVPTX Intrinsics ================ -Address Space Conversion ------------------------- - -'``llvm.nvvm.ptr.*.to.gen``' Intrinsics -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - -Syntax: -""""""" - -These are overloaded intrinsics. You can use these on any pointer types. - -.. code-block:: llvm - - declare ptr @llvm.nvvm.ptr.global.to.gen.p0.p1(ptr addrspace(1)) - declare ptr @llvm.nvvm.ptr.shared.to.gen.p0.p3(ptr addrspace(3)) - declare ptr @llvm.nvvm.ptr.constant.to.gen.p0.p4(ptr addrspace(4)) - declare ptr @llvm.nvvm.ptr.local.to.gen.p0.p5(ptr addrspace(5)) - -Overview: -""""""""" - -The '``llvm.nvvm.ptr.*.to.gen``' intrinsics convert a pointer in a non-generic -address space to a generic address space pointer. - -Semantics: -"""""""""" - -These intrinsics modify the pointer value to be a valid generic address space -pointer. - - -'``llvm.nvvm.ptr.gen.to.*``' Intrinsics -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - -Syntax: -""""""" - -These are overloaded intrinsics. You can use these on any pointer types. - -.. code-block:: llvm - - declare ptr addrspace(1) @llvm.nvvm.ptr.gen.to.global.p1.p0(ptr) - declare ptr addrspace(3) @llvm.nvvm.ptr.gen.to.shared.p3.p0(ptr) - declare ptr addrspace(4) @llvm.nvvm.ptr.gen.to.constant.p4.p0(ptr) - declare ptr addrspace(5) @llvm.nvvm.ptr.gen.to.local.p5.p0(ptr) - -Overview: -""""""""" - -The '``llvm.nvvm.ptr.gen.to.*``' intrinsics convert a pointer in the generic -address space to a pointer in the target address space. Note that these -intrinsics are only useful if the address space of the target address space of -the pointer is known. It is not legal to use address space conversion -intrinsics to convert a pointer from one non-generic address space to another -non-generic address space. - -Semantics: -"""""""""" - -These intrinsics modify the pointer value to be a valid pointer in the target -non-generic address space. - - Reading PTX Special Registers ----------------------------- |