[llvm] [NVPTX] Add pm_event intrinsics (PR #141278)

[Alex MacLean via llvm-commits]

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@@ -7172,6 +7172,17 @@ defm INT_SET_MAXNREG_DEC : SET_MAXNREG<"dec", int_nvvm_setmaxnreg_dec_sync_align
 
 } // isConvergent
 
+let hasSideEffects = 1 in {
+// Performance Monitor events
+def INT_PM_EVENT_IDX :  NVPTXInst<(outs), (ins i32imm:$idx),
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AlexMaclean wrote:

Use BasicNVPTXInst for these

https://github.com/llvm/llvm-project/pull/141278