diff options
| -rw-r--r-- | lib/Transforms/Utils/InlineCost.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Transforms/Utils/InlineCost.cpp b/lib/Transforms/Utils/InlineCost.cpp index 5fe85e6ef2..8925a752b1 100644 --- a/lib/Transforms/Utils/InlineCost.cpp +++ b/lib/Transforms/Utils/InlineCost.cpp @@ -45,6 +45,11 @@ unsigned InlineCostAnalyzer::FunctionInfo:: // We can't constant propagate instructions which have effects or // read memory. + // + // FIXME: It would be nice to capture the fact that a load from a + // pointer-to-constant-global is actually a *really* good thing to zap. + // Unfortunately, we don't know the pointer that may get propagated here, + // so we can't make this decision. if (Inst.mayReadFromMemory() || Inst.mayHaveSideEffects() || isa<AllocationInst>(Inst)) continue; |