1 ; The induction variable canonicalization pass shouldn't leave dead
2 ; instructions laying around!
4 ; RUN: opt < %s -indvars -S | grep {#uses=0} | count 1
6 define i32 @mul(i32 %x, i32 %y) {
10 tailrecurse: ; preds = %endif, %entry
11 %accumulator.tr = phi i32 [ %x, %entry ], [ %tmp.9, %endif ] ; <i32> [#uses=2]
12 %y.tr = phi i32 [ %y, %entry ], [ %tmp.8, %endif ] ; <i32> [#uses=2]
13 %tmp.1 = icmp eq i32 %y.tr, 0 ; <i1> [#uses=1]
14 br i1 %tmp.1, label %return, label %endif
16 endif: ; preds = %tailrecurse
17 %tmp.8 = add i32 %y.tr, -1 ; <i32> [#uses=1]
18 %tmp.9 = add i32 %accumulator.tr, %x ; <i32> [#uses=1]
21 return: ; preds = %tailrecurse
22 ret i32 %accumulator.tr