syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"\"LLVM"}]}
source_snippet:             "LLVM reserves r0 (scratch register) and r1 (zero register)",
context_before:         #error = ["r0", "r1", "r1r0"] =>
context_after:             // If this changes within LLVM, the compiler might use the registers