[AsmParser] Automatically declare and lex attribute keywords (NFC)

[nikic]

Summary

Rather than listing these by hand, include all enum attribute keywords from Attributes.inc. This reduces the number of places one has to update whenever an enum attribute is added.

[nickdesaulniers]

Thanks for the patch!

llvm/include/llvm/AsmParser/LLToken.h

enum Kind {
   kw_reassoc,
   kw_afn,
   kw_fast,
   kw_nuw,
   kw_nsw,
   kw_exact,
   kw_inbounds,
   kw_inrange,
-  kw_align,
   kw_addrspace,
   kw_section,
   kw_partition,
   kw_alias,
   kw_ifunc,
   kw_module,
   kw_asm,
   kw_sideeffect,
-  kw_alignstack,
   kw_inteldialect,
   kw_gc,
   kw_prefix,
   kw_prologue,
   kw_c,
 
   kw_cc,
   kw_ccc,
enum Kind {
   kw_amdgpu_ps,
   kw_amdgpu_cs,
   kw_amdgpu_kernel,
   kw_amdgpu_gfx,
   kw_tailcc,
 
   // Attributes:
   kw_attributes,
-  kw_allocalign,
-  kw_allocsize,
-  kw_alwaysinline,
-  kw_argmemonly,
-  kw_sanitize_address,
-  kw_sanitize_hwaddress,
-  kw_sanitize_memtag,
-  kw_builtin,
-  kw_byval,
-  kw_inalloca,
-  kw_cold,
-  kw_convergent,
-  kw_dereferenceable,
-  kw_dereferenceable_or_null,
-  kw_disable_sanitizer_instrumentation,
-  kw_elementtype,
-  kw_inaccessiblememonly,
-  kw_inaccessiblemem_or_argmemonly,
-  kw_inlinehint,
-  kw_inreg,
-  kw_jumptable,
-  kw_minsize,
-  kw_naked,
-  kw_nest,
-  kw_noalias,
-  kw_noundef,
-  kw_nobuiltin,
-  kw_nocallback,
-  kw_nocapture,
-  kw_noduplicate,
-  kw_nofree,
-  kw_noimplicitfloat,
-  kw_noinline,
-  kw_norecurse,
-  kw_nonlazybind,
-  kw_nomerge,
-  kw_nonnull,
-  kw_noprofile,
-  kw_noredzone,
-  kw_noreturn,
-  kw_nosync,
-  kw_nocf_check,
-  kw_nounwind,
-  kw_nosanitize_bounds,
-  kw_nosanitize_coverage,
-  kw_null_pointer_is_valid,
-  kw_optforfuzzing,
-  kw_optnone,
-  kw_optsize,
-  kw_preallocated,
-  kw_readnone,
-  kw_readonly,
-  kw_returned,
-  kw_returns_twice,
-  kw_signext,
-  kw_speculatable,
-  kw_ssp,
-  kw_sspreq,
-  kw_sspstrong,
-  kw_safestack,
-  kw_shadowcallstack,
-  kw_sret,
-  kw_sanitize_thread,
-  kw_sanitize_memory,
-  kw_speculative_load_hardening,
-  kw_strictfp,
-  kw_swifterror,
-  kw_swiftself,
-  kw_swiftasync,
-  kw_uwtable,
-  kw_vscale_range,
-  kw_willreturn,
-  kw_writeonly,
-  kw_zeroext,
-  kw_immarg,
-  kw_byref,
-  kw_mustprogress,
   kw_sync,
   kw_async,
+#define GET_ATTR_NAMES
+#define ATTRIBUTE_ENUM(ENUM_NAME, DISPLAY_NAME) \
+  kw_##DISPLAY_NAME,
+#include "llvm/IR/Attributes.inc"
 
   kw_type,
   kw_opaque,
 
   kw_comdat,
 
   // Comdat types
   kw_any,
#include "llvm/IR/Attributes.inc"
   kw_hasUnknownCall,
   kw_mustBeUnreachable,
   kw_calls,
   kw_callee,
   kw_params,
   kw_param,
   kw_hotness,
   kw_unknown,
-  kw_hot,
   kw_critical,
   kw_relbf,
   kw_variable,
   kw_vTableFuncs,
   kw_virtFunc,
   kw_aliasee,
   kw_refs,
   kw_typeIdInfo,

llvm/lib/AsmParser/LLLexer.cpp

#define KEYWORD(STR)                                                           \
   KEYWORD(reassoc);
   KEYWORD(afn);
   KEYWORD(fast);
   KEYWORD(nuw);
   KEYWORD(nsw);
   KEYWORD(exact);
   KEYWORD(inbounds);
   KEYWORD(inrange);
-  KEYWORD(align);
   KEYWORD(addrspace);
   KEYWORD(section);
   KEYWORD(partition);
   KEYWORD(alias);
   KEYWORD(ifunc);
   KEYWORD(module);
   KEYWORD(asm);
   KEYWORD(sideeffect);
-  KEYWORD(alignstack);
   KEYWORD(inteldialect);
   KEYWORD(gc);
   KEYWORD(prefix);
   KEYWORD(prologue);
 
   KEYWORD(ccc);
   KEYWORD(fastcc);
   KEYWORD(coldcc);
#define KEYWORD(STR)                                                           \
   KEYWORD(amdgpu_kernel);
   KEYWORD(amdgpu_gfx);
   KEYWORD(tailcc);
 
   KEYWORD(cc);
   KEYWORD(c);
 
   KEYWORD(attributes);
-
-  KEYWORD(alwaysinline);
-  KEYWORD(allocalign);
-  KEYWORD(allocsize);
-  KEYWORD(argmemonly);
-  KEYWORD(builtin);
-  KEYWORD(byval);
-  KEYWORD(inalloca);
-  KEYWORD(cold);
-  KEYWORD(convergent);
-  KEYWORD(dereferenceable);
-  KEYWORD(dereferenceable_or_null);
-  KEYWORD(disable_sanitizer_instrumentation);
-  KEYWORD(elementtype);
-  KEYWORD(inaccessiblememonly);
-  KEYWORD(inaccessiblemem_or_argmemonly);
-  KEYWORD(inlinehint);
-  KEYWORD(inreg);
-  KEYWORD(jumptable);
-  KEYWORD(minsize);
-  KEYWORD(naked);
-  KEYWORD(nest);
-  KEYWORD(noalias);
-  KEYWORD(nobuiltin);
-  KEYWORD(nocallback);
-  KEYWORD(nocapture);
-  KEYWORD(noduplicate);
-  KEYWORD(nofree);
-  KEYWORD(noimplicitfloat);
-  KEYWORD(noinline);
-  KEYWORD(norecurse);
-  KEYWORD(nonlazybind);
-  KEYWORD(nomerge);
-  KEYWORD(nonnull);
-  KEYWORD(noprofile);
-  KEYWORD(noredzone);
-  KEYWORD(noreturn);
-  KEYWORD(nosync);
-  KEYWORD(nocf_check);
-  KEYWORD(noundef);
-  KEYWORD(nounwind);
-  KEYWORD(nosanitize_bounds);
-  KEYWORD(nosanitize_coverage);
-  KEYWORD(null_pointer_is_valid);
-  KEYWORD(optforfuzzing);
-  KEYWORD(optnone);
-  KEYWORD(optsize);
-  KEYWORD(preallocated);
-  KEYWORD(readnone);
-  KEYWORD(readonly);
-  KEYWORD(returned);
-  KEYWORD(returns_twice);
-  KEYWORD(signext);
-  KEYWORD(speculatable);
-  KEYWORD(sret);
-  KEYWORD(ssp);
-  KEYWORD(sspreq);
-  KEYWORD(sspstrong);
-  KEYWORD(strictfp);
-  KEYWORD(safestack);
-  KEYWORD(shadowcallstack);
-  KEYWORD(sanitize_address);
-  KEYWORD(sanitize_hwaddress);
-  KEYWORD(sanitize_memtag);
-  KEYWORD(sanitize_thread);
-  KEYWORD(sanitize_memory);
-  KEYWORD(speculative_load_hardening);
-  KEYWORD(swifterror);
-  KEYWORD(swiftself);
-  KEYWORD(swiftasync);
-  KEYWORD(uwtable);
-  KEYWORD(vscale_range);
-  KEYWORD(willreturn);
-  KEYWORD(writeonly);
-  KEYWORD(zeroext);
-  KEYWORD(immarg);
-  KEYWORD(byref);
-  KEYWORD(mustprogress);
   KEYWORD(sync);
   KEYWORD(async);
 
+#define GET_ATTR_NAMES
+#define ATTRIBUTE_ENUM(ENUM_NAME, DISPLAY_NAME) \
+  KEYWORD(DISPLAY_NAME);
+#include "llvm/IR/Attributes.inc"
+
   KEYWORD(type);
   KEYWORD(opaque);
 
   KEYWORD(comdat);
 
   // Comdat types
   KEYWORD(any);
   KEYWORD(exactmatch);
#include "llvm/IR/Attributes.inc"
   KEYWORD(hasUnknownCall);
   KEYWORD(mustBeUnreachable);
   KEYWORD(calls);
   KEYWORD(callee);
   KEYWORD(params);
   KEYWORD(param);
   KEYWORD(hotness);
   KEYWORD(unknown);
-  KEYWORD(hot);
   KEYWORD(critical);
   KEYWORD(relbf);
   KEYWORD(variable);
   KEYWORD(vTableFuncs);
   KEYWORD(virtFunc);
   KEYWORD(aliasee);
   KEYWORD(refs);
   KEYWORD(typeIdInfo);