1 ; The induction variable canonicalization pass shouldn't leave dead
2 ; instructions laying around!
4 ; RUN: llvm-as < %s | opt -indvars | llvm-dis | \
5 ; RUN: not grep {#uses=0}
7 define i32 @mul(i32 %x, i32 %y) {
11 tailrecurse: ; preds = %endif, %entry
12 %accumulator.tr = phi i32 [ %x, %entry ], [ %tmp.9, %endif ] ; <i32> [#uses=2]
13 %y.tr = phi i32 [ %y, %entry ], [ %tmp.8, %endif ] ; <i32> [#uses=2]
14 %tmp.1 = icmp eq i32 %y.tr, 0 ; <i1> [#uses=1]
15 br i1 %tmp.1, label %return, label %endif
17 endif: ; preds = %tailrecurse
18 %tmp.8 = add i32 %y.tr, -1 ; <i32> [#uses=1]
19 %tmp.9 = add i32 %accumulator.tr, %x ; <i32> [#uses=1]
22 return: ; preds = %tailrecurse
23 ret i32 %accumulator.tr