[llvm] ARM: Avoid doing strncmp on libcall name (PR #165203)

[Benjamin Maxwell via llvm-commits]

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@@ -35,6 +35,19 @@ bool ARMSelectionDAGInfo::isTargetMemoryOpcode(unsigned Opcode) const {
          Opcode <= ARMISD::LAST_MEMORY_OPCODE;
 }
 
+static bool isAEABIFunctionImpl(const TargetLowering &TLI, RTLIB::Libcall LC) {
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MacDue wrote:

I think this function name is misleading; a quick grep shows there are many more AEABI functions (IIUC). This being limited to a few memory functions is based on the early exit below its callsite. 

https://github.com/llvm/llvm-project/pull/165203