assert(!MI.isBranch() && "Only non-branches are allowed");
InstrExec.insert(&MI);
visitNonBranch(MI);
+ // The call to visitNonBranch could propagate the changes until a branch
+ // is actually visited. This could result in adding CFG edges to the flow
+ // queue. Since the queue won't be processed, clear it.
+ while (!FlowQ.empty())
+ FlowQ.pop();
}
--- /dev/null
+; RUN: llc -march=hexagon < %s | FileCheck %s
+; REQUIRES: asserts
+
+; Check that we don't crash.
+; CHECK: call bar
+
+target triple = "hexagon"
+
+@debug = external hidden unnamed_addr global i1, align 4
+
+; Function Attrs: nounwind
+define void @foo() local_unnamed_addr #0 {
+entry:
+ br label %if.end5
+
+if.end5: ; preds = %entry
+ br i1 undef, label %if.then12, label %if.end13
+
+if.then12: ; preds = %if.end5
+ unreachable
+
+if.end13: ; preds = %if.end5
+ br label %for.cond
+
+for.cond: ; preds = %if.end13
+ %or.cond288 = or i1 undef, undef
+ br i1 undef, label %if.then44, label %if.end51
+
+if.then44: ; preds = %for.cond
+ tail call void @bar() #0
+ br label %if.end51
+
+if.end51: ; preds = %if.then44, %for.cond
+ %.b433 = load i1, i1* @debug, align 4
+ %or.cond290 = and i1 %or.cond288, %.b433
+ br i1 %or.cond290, label %if.then55, label %if.end63
+
+if.then55: ; preds = %if.end51
+ unreachable
+
+if.end63: ; preds = %if.end51
+ unreachable
+}
+
+declare void @bar() local_unnamed_addr #0
+
+attributes #0 = { nounwind }