RuntimeLibcalls: Pass in ABI name from MCOptions (#144894)

ARM needs this to compute the available libcalls.

llvm/include/llvm/IR/RuntimeLibcalls.h

@@ -58,8 +58,8 @@ struct RuntimeLibcallsInfo {
       const Triple &TT,
       ExceptionHandling ExceptionModel = ExceptionHandling::None,
       FloatABI::ABIType FloatABI = FloatABI::Default,
-      EABI EABIVersion = EABI::Default) {
-    initLibcalls(TT, ExceptionModel, FloatABI, EABIVersion);
+      EABI EABIVersion = EABI::Default, StringRef ABIName = "") {
+    initLibcalls(TT, ExceptionModel, FloatABI, EABIVersion, ABIName);
   }
 
   /// Rename the default libcall routine name for the specified libcall.
@@ -150,7 +150,8 @@ private:
   /// Set default libcall names. If a target wants to opt-out of a libcall it
   /// should be placed here.
   LLVM_ABI void initLibcalls(const Triple &TT, ExceptionHandling ExceptionModel,
-                             FloatABI::ABIType FloatABI, EABI ABIType);
+                             FloatABI::ABIType FloatABI, EABI ABIType,
+                             StringRef ABIName);
 };
 
 } // namespace RTLIB

llvm/lib/CodeGen/TargetLoweringBase.cpp

@@ -633,7 +633,8 @@ void RTLIB::initCmpLibcallCCs(ISD::CondCode *CmpLibcallCCs) {
 /// NOTE: The TargetMachine owns TLOF.
 TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm)
     : TM(tm), Libcalls(TM.getTargetTriple(), TM.Options.ExceptionModel,
-                       TM.Options.FloatABIType, TM.Options.EABIVersion) {
+                       TM.Options.FloatABIType, TM.Options.EABIVersion,
+                       TM.Options.MCOptions.getABIName()) {
   initActions();
 
   // Perform these initializations only once.

llvm/lib/IR/RuntimeLibcalls.cpp

@@ -359,7 +359,7 @@ static void setLongDoubleIsF128Libm(RuntimeLibcallsInfo &Info,
 void RuntimeLibcallsInfo::initLibcalls(const Triple &TT,
                                        ExceptionHandling ExceptionModel,
                                        FloatABI::ABIType FloatABI,
-                                       EABI EABIVersion) {
+                                       EABI EABIVersion, StringRef ABIName) {
   initSoftFloatCmpLibcallPredicates();
 
   initSoftFloatCmpLibcallPredicates();