[llvm] [LLVM][NVPTX] Add NVPTX codegen support for fence.proxy.tensormap (PR #100748)

[Artem Belevich via llvm-commits]

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+; RUN: llc < %s -march=nvptx64 -mcpu=sm_90 -mattr=+ptx83 | FileCheck --check-prefixes=CHECK %s
+; RUN: %if ptxas-12.5 %{ llc < %s -march=nvptx64 -mcpu=sm_90 -mattr=+ptx83 | %ptxas-verify -arch=sm_90 %}
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Artem-B wrote:

The instructions require PTX8.3, which suggests that the required ptxas version should be 12.3

https://github.com/llvm/llvm-project/pull/100748