[TTI] Enable analysis of clib functions in getIntrinsicCosts. NFCI.

This is addressing the issue that we're not modeling the cost of clib functions
in TTI::getIntrinsicCosts and thus we're basically addressing this fixme:
    
// FIXME: This is wrong for libc intrinsics.

To enable analysis of clib functions, we not only need an intrinsic ID and
formal arguments, but also the actual user of that function so that we can e.g.
look at alignment and values of arguments. So, this is the initial plumbing to
pass the user of an intrinsinsic on to getCallCosts, which queries
getIntrinsicCosts.

Differential Revision: https://reviews.llvm.org/D59014

llvm-svn: 355901

1 files changed, 9 insertions, 6 deletions

diff --git a/llvm/lib/Analysis/TargetTransformInfo.cpp b/llvm/lib/Analysis/TargetTransformInfo.cpp
index 7e453bfa1df..7cd79519ebf 100644
--- a/llvm/lib/Analysis/TargetTransformInfo.cpp
+++ b/llvm/lib/Analysis/TargetTransformInfo.cpp
@@ -60,15 +60,17 @@ int TargetTransformInfo::getOperationCost(unsigned Opcode, Type *Ty,
   return Cost;
 }
 
-int TargetTransformInfo::getCallCost(FunctionType *FTy, int NumArgs) const {
-  int Cost = TTIImpl->getCallCost(FTy, NumArgs);
+int TargetTransformInfo::getCallCost(FunctionType *FTy, int NumArgs,
+                                     const User *U) const {
+  int Cost = TTIImpl->getCallCost(FTy, NumArgs, U);
   assert(Cost >= 0 && "TTI should not produce negative costs!");
   return Cost;
 }
 
 int TargetTransformInfo::getCallCost(const Function *F,
-                                     ArrayRef<const Value *> Arguments) const {
-  int Cost = TTIImpl->getCallCost(F, Arguments);
+                                     ArrayRef<const Value *> Arguments,
+                                     const User *U) const {
+  int Cost = TTIImpl->getCallCost(F, Arguments, U);
   assert(Cost >= 0 && "TTI should not produce negative costs!");
   return Cost;
 }
@@ -88,8 +90,9 @@ int TargetTransformInfo::getExtCost(const Instruction *I,
 }
 
 int TargetTransformInfo::getIntrinsicCost(
-    Intrinsic::ID IID, Type *RetTy, ArrayRef<const Value *> Arguments) const {
-  int Cost = TTIImpl->getIntrinsicCost(IID, RetTy, Arguments);
+    Intrinsic::ID IID, Type *RetTy, ArrayRef<const Value *> Arguments,
+    const User *U) const {
+  int Cost = TTIImpl->getIntrinsicCost(IID, RetTy, Arguments, U);
   assert(Cost >= 0 && "TTI should not produce negative costs!");
   return Cost;
 }