phi.ll 416 B

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  1. ; This is a basic sanity check for constant propagation. The add instruction
  2. ; should be eliminated.
  3. ; RUN: opt < %s -constprop -die -S | not grep phi
  4. define i32 @test(i1 %B) {
  5. BB0:
  6. br i1 %B, label %BB1, label %BB3
  7. BB1: ; preds = %BB0
  8. br label %BB3
  9. BB3: ; preds = %BB1, %BB0
  10. %Ret = phi i32 [ 1, %BB0 ], [ 1, %BB1 ] ; <i32> [#uses=1]
  11. ret i32 %Ret
  12. }