[UpdateTestChecks][NFC] Remove entries with same prefix

[jsji]

Summary

Follow up of https://reviews.llvm.org/D63723,
there are two other duplicate entries that can be dropped.

[lebedev.ri]

llvm/utils/UpdateTestChecks/asm.py

293

Is x86 a real triple?
I've never seen it used.

[jsji]

llvm/utils/UpdateTestChecks/asm.py

293

Good question.
enum Triple::x86 is a valid enum, but it actually maps to "i386", "i486", "i586", "i686", "i786", "i886", "i986" in triple strings.

However, in this script, we will return x86 in get_triple_from_march for unsupported -march when there is not triple specified in IR or command line.

So x86 is a valid entry here.

294

Since x86 is not a real triple, we are actually missing support for i486, i586,...

There is only one i586 triple case found in current LLVM test.
llvm/test/CodeGen/X86/constructor.ll
So this is not a big issue.

[lebedev.ri]

Okay, thanks.

llvm/utils/UpdateTestChecks/asm.py

def get_triple_from_march(march):
   for prefix, triple in triples.items():
     if march.startswith(prefix):
       return triple
   print("Cannot find a triple. Assume 'x86'", file=sys.stderr)
   return 'x86'
 
 def build_function_body_dictionary_for_triple(args, raw_tool_output, triple, prefixes, func_dict):
   target_handlers = {
-      'x86_64': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
       'i686': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
       'x86': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
       'i386': (scrub_asm_x86, ASM_FUNCTION_X86_RE),
       'aarch64': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_RE),
       'aarch64-apple-darwin': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
       'hexagon': (scrub_asm_hexagon, ASM_FUNCTION_HEXAGON_RE),
       'r600': (scrub_asm_amdgpu, ASM_FUNCTION_AMDGPU_RE),
       'amdgcn': (scrub_asm_amdgpu, ASM_FUNCTION_AMDGPU_RE),
       'arm': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
       'arm64': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_RE),
       'arm64-apple-ios': (scrub_asm_arm_eabi, ASM_FUNCTION_AARCH64_DARWIN_RE),
       'armv7-apple-ios' : (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_IOS_RE),
       'thumb': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_RE),
       'thumb-macho': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_MACHO_RE),
       'thumbv5-macho': (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_MACHO_RE),
       'thumbv7-apple-ios' : (scrub_asm_arm_eabi, ASM_FUNCTION_ARM_IOS_RE),
       'mips': (scrub_asm_mips, ASM_FUNCTION_MIPS_RE),
       'ppc32': (scrub_asm_powerpc, ASM_FUNCTION_PPC_RE),
       'powerpc': (scrub_asm_powerpc, ASM_FUNCTION_PPC_RE),
       'riscv32': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
       'riscv64': (scrub_asm_riscv, ASM_FUNCTION_RISCV_RE),
       'lanai': (scrub_asm_lanai, ASM_FUNCTION_LANAI_RE),
       'sparc': (scrub_asm_sparc, ASM_FUNCTION_SPARC_RE),
-      'sparcv9': (scrub_asm_sparc, ASM_FUNCTION_SPARC_RE),
       's390x': (scrub_asm_systemz, ASM_FUNCTION_SYSTEMZ_RE),
       'wasm32': (scrub_asm_wasm32, ASM_FUNCTION_WASM32_RE),
   }
   handler = None
   best_prefix = ''
   for prefix, s in target_handlers.items():
     if triple.startswith(prefix) and len(prefix) > len(best_prefix):
       handler = s