CodeGen: Canonicalize access to function attributes, NFC

Canonicalize access to function attributes to use the simpler API.

getAttributes().getAttribute(AttributeSet::FunctionIndex, Kind)
  => getFnAttribute(Kind)

getAttributes().hasAttribute(AttributeSet::FunctionIndex, Kind)
  => hasFnAttribute(Kind)

Also, add `Function::getFnStackAlignment()`, and canonicalize:

getAttributes().getStackAlignment(AttributeSet::FunctionIndex)
  => getFnStackAlignment()

llvm-svn: 229208

1 files changed, 3 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/MachineFunction.cpp b/llvm/lib/CodeGen/MachineFunction.cpp
index 036d696..151a260 100644
--- a/llvm/lib/CodeGen/MachineFunction.cpp
+++ b/llvm/lib/CodeGen/MachineFunction.cpp
@@ -67,17 +67,14 @@ MachineFunction::MachineFunction(const Function *F, const TargetMachine &TM,
                        STI->getFrameLowering()->isStackRealignable(),
                        !F->hasFnAttribute("no-realign-stack"));
 
-  if (Fn->getAttributes().hasAttribute(AttributeSet::FunctionIndex,
-                                       Attribute::StackAlignment))
-    FrameInfo->ensureMaxAlignment(Fn->getAttributes().
-                                getStackAlignment(AttributeSet::FunctionIndex));
+  if (Fn->hasFnAttribute(Attribute::StackAlignment))
+    FrameInfo->ensureMaxAlignment(Fn->getFnStackAlignment());
 
   ConstantPool = new (Allocator) MachineConstantPool(TM);
   Alignment = STI->getTargetLowering()->getMinFunctionAlignment();
 
   // FIXME: Shouldn't use pref alignment if explicit alignment is set on Fn.
-  if (!Fn->getAttributes().hasAttribute(AttributeSet::FunctionIndex,
-                                        Attribute::OptimizeForSize))
+  if (!Fn->hasFnAttribute(Attribute::OptimizeForSize))
     Alignment = std::max(Alignment,
                          STI->getTargetLowering()->getPrefFunctionAlignment());