Reverse 206485.

After some discussions the preferred semantics of
the always_inline attribute is
inline always when the compiler can determine
that it it safe to do so.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206487 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 8 deletions

diff --git a/lib/Analysis/IPA/InlineCost.cpp b/lib/Analysis/IPA/InlineCost.cpp
index 683637f5b7..a803f8c3bf 100644
--- a/lib/Analysis/IPA/InlineCost.cpp
+++ b/lib/Analysis/IPA/InlineCost.cpp
@@ -1300,14 +1300,8 @@ bool InlineCostAnalysis::isInlineViable(Function &F) {
     F.getAttributes().hasAttribute(AttributeSet::FunctionIndex,
                                    Attribute::ReturnsTwice);
   for (Function::iterator BI = F.begin(), BE = F.end(); BI != BE; ++BI) {
-    // Disallow inlining of functions which contain an indirect branch,
-    // unless the always_inline attribute is set.
-    // The attribute serves as a assertion that no local address
-    // like a block label can escpape the function.
-    // Revisit enabling inlining for functions with indirect branches
-    // when a more sophisticated espape/points-to analysis becomes available.
-    if (isa<IndirectBrInst>(BI->getTerminator()) &&
-        !F.hasFnAttribute(Attribute::AlwaysInline))
+    // Disallow inlining of functions which contain an indirect branch.
+    if (isa<IndirectBrInst>(BI->getTerminator()))
       return false;
 
     for (BasicBlock::iterator II = BI->begin(), IE = BI->end(); II != IE;