IRGen: move FailBBs from IRGenSILFunction to its base class IRGenFunction

NFC

Author: eeckstein

lib/IRGen/IRGenFunction.cpp

@@ -63,6 +63,11 @@ IRGenFunction::IRGenFunction(IRGenModule &IGM, llvm::Function *Fn,
 }
 
 IRGenFunction::~IRGenFunction() {
+  // Move the trap basic blocks to the end of the function.
+  for (auto *FailBB : FailBBs) {
+    CurFn->splice(CurFn->end(), CurFn, FailBB->getIterator());
+  }
+
   emitEpilogue();
 
   // Restore the debug location.

lib/IRGen/IRGenFunction.h

@@ -78,6 +78,9 @@ class IRGenFunction {
   OptimizationMode OptMode;
   bool isPerformanceConstraint;
 
+  // Destination basic blocks for condfail traps.
+  llvm::SmallVector<llvm::BasicBlock *, 8> FailBBs;
+
   llvm::Function *const CurFn;
   ModuleDecl *getSwiftModule() const;
   SILModule &getSILModule() const;

lib/IRGen/IRGenSIL.cpp

@@ -420,9 +420,6 @@ class IRGenSILFunction :
 
   llvm::MapVector<SILBasicBlock *, LoweredBB> LoweredBBs;
 
-  // Destination basic blocks for condfail traps.
-  llvm::SmallVector<llvm::BasicBlock *, 8> FailBBs;
-
   SILFunction *CurSILFn;
   // If valid, the address by means of which a return--which is direct in
   // SIL--is passed indirectly in IR.  Such indirection is necessary when the
@@ -1190,15 +1187,6 @@ class IRGenSILFunction :
         ArtificialKind::RealValue, DbgInstrKind);
   }
 
-  void emitFailBB() {
-    if (!FailBBs.empty()) {
-      // Move the trap basic blocks to the end of the function.
-      for (auto *FailBB : FailBBs) {
-        CurFn->splice(CurFn->end(), CurFn, FailBB->getIterator());
-      }
-    }
-  }
-
   //===--------------------------------------------------------------------===//
   // SIL instruction lowering
   //===--------------------------------------------------------------------===//
@@ -1967,9 +1955,6 @@ IRGenSILFunction::IRGenSILFunction(IRGenModule &IGM, SILFunction *f)
 
 IRGenSILFunction::~IRGenSILFunction() {
   assert(Builder.hasPostTerminatorIP() && "did not terminate BB?!");
-  // Emit the fail BB if we have one.
-  if (!FailBBs.empty())
-    emitFailBB();
   LLVM_DEBUG(CurFn->print(llvm::dbgs()));
 }