[llvm] ARM: Start moving runtime libcall configuration out of TargetLowering (PR #142617)

[Eli Friedman via llvm-commits]

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@@ -31,6 +31,56 @@ static void setAArch64LibcallNames(RuntimeLibcallsInfo &Info,
   }
 }
 
+static void setARMLibcallNames(RuntimeLibcallsInfo &Info, const Triple &TT) {
+  // Register based DivRem for AEABI (RTABI 4.2)
+  if (TT.isTargetAEABI() || TT.isAndroid() || TT.isTargetGNUAEABI() ||
+      TT.isTargetMuslAEABI() || TT.isOSWindows()) {
+    if (TT.isOSWindows()) {
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efriedma-quic wrote:

Can we reduce the nesting here?  `if (TT.isOSWindows()) {} else if (TT.isTargetAEABI() || TT.isAndroid() || ...`

https://github.com/llvm/llvm-project/pull/142617