[IR] Create new method in `Function` class (NFC)

Create method `optForNone()` testing for the function level equivalent of
`-O0` and refactor appropriately.

Differential revision: https://reviews.llvm.org/D59852

llvm-svn: 357638

1 files changed, 2 insertions, 4 deletions

diff --git a/llvm/lib/Transforms/IPO/FunctionAttrs.cpp b/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
index 77e98ecd910..d396882cc7e 100644
--- a/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -1366,8 +1366,7 @@ PreservedAnalyses PostOrderFunctionAttrsPass::run(LazyCallGraph::SCC &C,
   bool HasUnknownCall = false;
   for (LazyCallGraph::Node &N : C) {
     Function &F = N.getFunction();
-    if (F.hasFnAttribute(Attribute::OptimizeNone) ||
-        F.hasFnAttribute(Attribute::Naked)) {
+    if (F.optForNone() || F.hasFnAttribute(Attribute::Naked)) {
       // Treat any function we're trying not to optimize as if it were an
       // indirect call and omit it from the node set used below.
       HasUnknownCall = true;
@@ -1440,8 +1439,7 @@ static bool runImpl(CallGraphSCC &SCC, AARGetterT AARGetter) {
   bool ExternalNode = false;
   for (CallGraphNode *I : SCC) {
     Function *F = I->getFunction();
-    if (!F || F->hasFnAttribute(Attribute::OptimizeNone) ||
-        F->hasFnAttribute(Attribute::Naked)) {
+    if (!F || F->optForNone() || F->hasFnAttribute(Attribute::Naked)) {
       // External node or function we're trying not to optimize - we both avoid
       // transform them and avoid leveraging information they provide.
       ExternalNode = true;