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1; RUN: llc < %s2 3; This testcase used to crash. See PR29132.4 5target triple = "x86_64-unknown-linux-gnu"6 7@a = common local_unnamed_addr global i16 0, align 28@c = common global i32 0, align 49@d = common local_unnamed_addr global i8 0, align 110@b = common global i32 0, align 411 12; Function Attrs: norecurse nounwind optsize uwtable13define i32 @main() local_unnamed_addr #0 {14entry:15 %0 = load volatile i32, ptr @c, align 416 %tobool = icmp eq i32 %0, 017 %1 = load i16, ptr @a, align 218 br i1 %tobool, label %lor.rhs, label %lor.end19 20lor.rhs: ; preds = %entry21 %inc = add i16 %1, 122 store i16 %inc, ptr @a, align 223 br label %lor.end24 25lor.end: ; preds = %entry, %lor.rhs26 %2 = phi i16 [ %inc, %lor.rhs ], [ %1, %entry ]27 %dec = add i16 %2, -128 store i16 %dec, ptr @a, align 229 %3 = load i8, ptr @d, align 130 %sub = sub i8 0, %331 %tobool4 = icmp eq i16 %dec, 032 br i1 %tobool4, label %land.end, label %land.rhs33 34land.rhs: ; preds = %lor.end35 %4 = load volatile i32, ptr @b, align 436 %tobool5 = icmp ne i32 %4, 037 br label %land.end38 39land.end: ; preds = %lor.end, %land.rhs40 %5 = phi i1 [ false, %lor.end ], [ %tobool5, %land.rhs ]41 %land.ext = zext i1 %5 to i842 %or = or i8 %land.ext, %sub43 store i8 %or, ptr @d, align 144 ret i32 045}46 47attributes #0 = { norecurse nounwind optsize uwtable "target-cpu"="x86-64" }48