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SIL: hoist CFGState out of the function scope #19303

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SIL: hoist CFGState out of the function scope #19303

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17 changes: 9 additions & 8 deletions lib/SIL/SILVerifier.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4424,20 +4424,21 @@ class SILVerifier : public SILVerifierBase<SILVerifier> {
"have at least one argument for self.");
}

enum CFGState {
/// No special rules are in play.
Normal,
/// We've followed the resume edge of a yield in a yield_once coroutine.
YieldOnceResume,
/// We've followed the unwind edge of a yield.
YieldUnwind
};

/// Verify the various control-flow-sensitive rules of SIL:
///
/// - stack allocations and deallocations must obey a stack discipline
/// - accesses must be uniquely ended
/// - flow-sensitive states must be equivalent on all paths into a block
void verifyFlowSensitiveRules(SILFunction *F) {
enum CFGState {
/// No special rules are in play.
Normal,
/// We've followed the resume edge of a yield in a yield_once coroutine.
YieldOnceResume,
/// We've followed the unwind edge of a yield.
YieldUnwind
};
struct BBState {
std::vector<SingleValueInstruction*> Stack;

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