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Diffstat (limited to 'test/Transforms/IndVarSimplify/2003-12-10-IndVarDeadCode.ll')
| -rw-r--r-- | test/Transforms/IndVarSimplify/2003-12-10-IndVarDeadCode.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/Transforms/IndVarSimplify/2003-12-10-IndVarDeadCode.ll b/test/Transforms/IndVarSimplify/2003-12-10-IndVarDeadCode.ll new file mode 100644 index 0000000..bd9d1ef --- /dev/null +++ b/test/Transforms/IndVarSimplify/2003-12-10-IndVarDeadCode.ll @@ -0,0 +1,25 @@ +; 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 +} + |