revert r102831. We already delete dead readonly calls in
other places, killing a valid transformation is not the right
answer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102850 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/Inliner.cpp b/lib/Transforms/IPO/Inliner.cpp
index 875c4fd..b785bb0 100644
--- a/lib/Transforms/IPO/Inliner.cpp
+++ b/lib/Transforms/IPO/Inliner.cpp
@@ -33,8 +33,7 @@
using namespace llvm;
STATISTIC(NumInlined, "Number of functions inlined");
-// FIXME: Uncomment once call deletion xform is made safe
-// STATISTIC(NumCallsDeleted, "Number of call sites deleted, not inlined");
+STATISTIC(NumCallsDeleted, "Number of call sites deleted, not inlined");
STATISTIC(NumDeleted, "Number of functions deleted because all callers found");
STATISTIC(NumMergedAllocas, "Number of allocas merged together");
@@ -383,9 +382,6 @@
Function *Caller = CS.getCaller();
Function *Callee = CS.getCalledFunction();
- // FIXME: This transformation is not legal unless we can prove
- // that the callee always terminates.
-#if 0
// If this call site is dead and it is to a readonly function, we should
// just delete the call instead of trying to inline it, regardless of
// size. This happens because IPSCCP propagates the result out of the
@@ -400,7 +396,6 @@
// Update the cached cost info with the missing call
growCachedCostInfo(Caller, NULL);
} else {
-#endif
// We can only inline direct calls to non-declarations.
if (Callee == 0 || Callee->isDeclaration()) continue;
@@ -442,9 +437,7 @@
// Update the cached cost info with the inlined call.
growCachedCostInfo(Caller, Callee);
-#if 0
}
-#endif
// If we inlined or deleted the last possible call site to the function,
// delete the function body now.