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