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; RUN: opt < %s -loop-reduce | llvm-dis
; PR3399
@g_53 = external global i32 ; <i32*> [#uses=1]
define i32 @foo() nounwind {
bb5.thread:
br label %bb
bb: ; preds = %bb5, %bb5.thread
%indvar = phi i32 [ 0, %bb5.thread ], [ %indvar.next, %bb5 ] ; <i32> [#uses=2]
br i1 false, label %bb5, label %bb1
bb1: ; preds = %bb
%l_2.0.reg2mem.0 = sub i32 0, %indvar ; <i32> [#uses=1]
%0 = volatile load i32* @g_53, align 4 ; <i32> [#uses=1]
%1 = trunc i32 %l_2.0.reg2mem.0 to i16 ; <i16> [#uses=1]
%2 = trunc i32 %0 to i16 ; <i16> [#uses=1]
%3 = mul i16 %2, %1 ; <i16> [#uses=1]
%4 = icmp eq i16 %3, 0 ; <i1> [#uses=1]
br i1 %4, label %bb7, label %bb2
bb2: ; preds = %bb2, %bb1
br label %bb2
bb5: ; preds = %bb
%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
br label %bb
bb7: ; preds = %bb1
ret i32 1
}
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