[llvm] [NVPTX] Support intrinsics for shared memory special registers (PR #182354)

[Alex MacLean via llvm-commits]

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@@ -2450,6 +2450,18 @@ defm int_nvvm_read_ptx_sreg_cluster_nctaid : PTXReadSRegIntrinsicNB_v4i32<MAX_GR
 def int_nvvm_read_ptx_sreg_cluster_ctarank : PTXReadSRegIntrinsicNB_r32;
 def int_nvvm_read_ptx_sreg_cluster_nctarank : PTXReadSRegIntrinsicNB_r32;
 
+//
+// Reserved Shared Memory Intrinsics
+//
+def int_nvvm_read_ptx_sreg_reserved_smem_offset_begin
+  : PTXReadSRegIntrinsicNB_r32<[], "llvm.nvvm.read.ptx.sreg.reserved_smem_offset_begin">;
+def int_nvvm_read_ptx_sreg_reserved_smem_offset_end
+  : PTXReadSRegIntrinsicNB_r32<[], "llvm.nvvm.read.ptx.sreg.reserved_smem_offset_end">;
+def int_nvvm_read_ptx_sreg_reserved_smem_offset_cap
+  : PTXReadSRegIntrinsicNB_r32<[], "llvm.nvvm.read.ptx.sreg.reserved_smem_offset_cap">;
+def int_nvvm_read_ptx_sreg_reserved_smem_offset_0
+  : PTXReadSRegIntrinsicNB_r32<[], "llvm.nvvm.read.ptx.sreg.reserved_smem_offset_0">;
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AlexMaclean wrote:

Can you change the PTXReadSRegIntrinsicNB_r32 definition to automaticall prepend ""llvm.nvvm.read.ptx.sreg." when a name is provided? Also let use the `name =` syntax as bellow. 

https://github.com/llvm/llvm-project/pull/182354