[PM/PartiallyInlineLibCalls] Convert to static function in preparation for porting this pass to the new PM.

llvm-svn: 270225

1 files changed, 49 insertions, 55 deletions

diff --git a/llvm/lib/Transforms/Scalar/PartiallyInlineLibCalls.cpp b/llvm/lib/Transforms/Scalar/PartiallyInlineLibCalls.cpp
index 27bb230af2f..45d7c8e05be 100644
--- a/llvm/lib/Transforms/Scalar/PartiallyInlineLibCalls.cpp
+++ b/llvm/lib/Transforms/Scalar/PartiallyInlineLibCalls.cpp
@@ -37,11 +37,6 @@ namespace {
 
     void getAnalysisUsage(AnalysisUsage &AU) const override;
     bool runOnFunction(Function &F) override;
-
-  private:
-    /// Optimize calls to sqrt.
-    bool optimizeSQRT(CallInst *Call, Function *CalledFunc,
-                      BasicBlock &CurrBB, Function::iterator &BB);
   };
 
   char PartiallyInlineLibCalls::ID = 0;
@@ -56,57 +51,9 @@ void PartiallyInlineLibCalls::getAnalysisUsage(AnalysisUsage &AU) const {
   FunctionPass::getAnalysisUsage(AU);
 }
 
-bool PartiallyInlineLibCalls::runOnFunction(Function &F) {
-  if (skipFunction(F))
-    return false;
-
-  bool Changed = false;
-  Function::iterator CurrBB;
-  TargetLibraryInfo *TLI =
-      &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
-  const TargetTransformInfo *TTI =
-      &getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
-  for (Function::iterator BB = F.begin(), BE = F.end(); BB != BE;) {
-    CurrBB = BB++;
-
-    for (BasicBlock::iterator II = CurrBB->begin(), IE = CurrBB->end();
-         II != IE; ++II) {
-      CallInst *Call = dyn_cast<CallInst>(&*II);
-      Function *CalledFunc;
-
-      if (!Call || !(CalledFunc = Call->getCalledFunction()))
-        continue;
-
-      // Skip if function either has local linkage or is not a known library
-      // function.
-      LibFunc::Func LibFunc;
-      if (CalledFunc->hasLocalLinkage() || !CalledFunc->hasName() ||
-          !TLI->getLibFunc(CalledFunc->getName(), LibFunc))
-        continue;
-
-      switch (LibFunc) {
-      case LibFunc::sqrtf:
-      case LibFunc::sqrt:
-        if (TTI->haveFastSqrt(Call->getType()) &&
-            optimizeSQRT(Call, CalledFunc, *CurrBB, BB))
-          break;
-        continue;
-      default:
-        continue;
-      }
-
-      Changed = true;
-      break;
-    }
-  }
-
-  return Changed;
-}
 
-bool PartiallyInlineLibCalls::optimizeSQRT(CallInst *Call,
-                                           Function *CalledFunc,
-                                           BasicBlock &CurrBB,
-                                           Function::iterator &BB) {
+static bool optimizeSQRT(CallInst *Call, Function *CalledFunc,
+                         BasicBlock &CurrBB, Function::iterator &BB) {
   // There is no need to change the IR, since backend will emit sqrt
   // instruction if the call has already been marked read-only.
   if (Call->onlyReadsMemory())
@@ -160,6 +107,53 @@ bool PartiallyInlineLibCalls::optimizeSQRT(CallInst *Call,
   return true;
 }
 
+bool PartiallyInlineLibCalls::runOnFunction(Function &F) {
+  if (skipFunction(F))
+    return false;
+
+  bool Changed = false;
+  Function::iterator CurrBB;
+  TargetLibraryInfo *TLI =
+      &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
+  const TargetTransformInfo *TTI =
+      &getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
+  for (Function::iterator BB = F.begin(), BE = F.end(); BB != BE;) {
+    CurrBB = BB++;
+
+    for (BasicBlock::iterator II = CurrBB->begin(), IE = CurrBB->end();
+         II != IE; ++II) {
+      CallInst *Call = dyn_cast<CallInst>(&*II);
+      Function *CalledFunc;
+
+      if (!Call || !(CalledFunc = Call->getCalledFunction()))
+        continue;
+
+      // Skip if function either has local linkage or is not a known library
+      // function.
+      LibFunc::Func LibFunc;
+      if (CalledFunc->hasLocalLinkage() || !CalledFunc->hasName() ||
+          !TLI->getLibFunc(CalledFunc->getName(), LibFunc))
+        continue;
+
+      switch (LibFunc) {
+      case LibFunc::sqrtf:
+      case LibFunc::sqrt:
+        if (TTI->haveFastSqrt(Call->getType()) &&
+            optimizeSQRT(Call, CalledFunc, *CurrBB, BB))
+          break;
+        continue;
+      default:
+        continue;
+      }
+
+      Changed = true;
+      break;
+    }
+  }
+
+  return Changed;
+}
+
 FunctionPass *llvm::createPartiallyInlineLibCallsPass() {
   return new PartiallyInlineLibCalls();
 }