[Frontend] Print reproducer in case of ptxas error (#7677)

@lezcano and I needed to do this anyway whilst debugging, and having
this dump to stdout by default matches what we do when there's an error
during an MLIR compilation pass

Author: apgoucher

third_party/nvidia/backend/compiler.py

@@ -458,9 +458,20 @@ def make_cubin(self, src, metadata, opt, capability):
                 else:
                     error = f'`ptxas` failed with error code {e.returncode}'
 
-                raise PTXASError(f"{error}\n"
-                                 f"`ptxas` stderr:\n{log}\n"
-                                 f'Repro command: {" ".join(ptxas_cmd)}\n')
+                error = (f"{error}\n"
+                         f"`ptxas` stderr:\n{log}\n"
+                         f'Repro command: {" ".join(ptxas_cmd)}\n')
+
+                print(f"""
+
+================================================================
+{error}
+
+{src}
+================================================================
+please share the reproducer above with Triton project.
+""")
+                raise PTXASError(error)
 
             with open(fbin, 'rb') as f:
                 cubin = f.read()