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-rw-r--r--lib/Transforms/Scalar/SCCP.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index b5edf4e..b745097 100644
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -1229,7 +1229,10 @@ CallOverdefined:
TMRVI = TrackedMultipleRetVals.find(std::make_pair(F, 0));
if (TMRVI == TrackedMultipleRetVals.end())
goto CallOverdefined;
-
+
+ // Need to mark as overdefined, otherwise it stays undefined which
+ // creates extractvalue undef, <idx>
+ markOverdefined(I);
// If we are tracking this callee, propagate the return values of the call
// into this call site. We do this by walking all the uses. Single-index
// ExtractValueInst uses can be tracked; anything more complicated is
@@ -1271,7 +1274,6 @@ CallOverdefined:
}
}
-
void SCCPSolver::Solve() {
// Process the work lists until they are empty!
while (!BBWorkList.empty() || !InstWorkList.empty() ||
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