[PTX] bumped minimum supported ptx version in llvm (#9450)

Author: ThomasRaoux

third_party/nvidia/backend/compiler.py

@@ -80,12 +80,12 @@ def get_ptx_version_from_options(options, arch: int):
 def get_features(options, arch: int):
     ptx_version = get_ptx_version_from_options(options, arch)
 
-    # PTX 8.6 is the max version supported by llvm c1188642.
+    # PTX 8.6 is the max version supported by llvm 979132a0.
     #
     # To check if a newer PTX version is supported, increase this value
     # and run a test.  If it's not supported, LLVM will print a warning
     # like "+ptx8.4 is not a recognized feature for this target".
-    llvm_ptx_version = min(86, ptx_version)
+    llvm_ptx_version = min(90, ptx_version)
     features = f'+ptx{llvm_ptx_version}'
     return features