1 ; RUN: opt < %s -loop-reduce | llvm-dis 2 ; PR3399 3 4 @g_53 = external global i32 ; <i32*> [#uses=1] 5 6 define i32 @foo() nounwind { 7 bb5.thread: 8 br label %bb 9 10 bb: ; preds = %bb5, %bb5.thread 11 %indvar = phi i32 [ 0, %bb5.thread ], [ %indvar.next, %bb5 ] ; <i32> [#uses=2] 12 br i1 false, label %bb5, label %bb1 13 14 bb1: ; preds = %bb 15 %l_2.0.reg2mem.0 = sub i32 0, %indvar ; <i32> [#uses=1] 16 %0 = volatile load i32* @g_53, align 4 ; <i32> [#uses=1] 17 %1 = trunc i32 %l_2.0.reg2mem.0 to i16 ; <i16> [#uses=1] 18 %2 = trunc i32 %0 to i16 ; <i16> [#uses=1] 19 %3 = mul i16 %2, %1 ; <i16> [#uses=1] 20 %4 = icmp eq i16 %3, 0 ; <i1> [#uses=1] 21 br i1 %4, label %bb7, label %bb2 22 23 bb2: ; preds = %bb2, %bb1 24 br label %bb2 25 26 bb5: ; preds = %bb 27 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 28 br label %bb 29 30 bb7: ; preds = %bb1 31 ret i32 1 32 } 33
