ConstantExprFold.ll 1.6 KB

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  1. ; This test checks to make sure that constant exprs fold in some simple
  2. ; situations
  3. ; RUN: llvm-as < %s | llvm-dis | not grep "("
  4. ; RUN: verify-uselistorder %s
  5. @A = global i64 0
  6. global i64* inttoptr (i64 add (i64 ptrtoint (i64* @A to i64), i64 0) to i64*) ; X + 0 == X
  7. global i64* inttoptr (i64 sub (i64 ptrtoint (i64* @A to i64), i64 0) to i64*) ; X - 0 == X
  8. global i64* inttoptr (i64 mul (i64 ptrtoint (i64* @A to i64), i64 0) to i64*) ; X * 0 == 0
  9. global i64* inttoptr (i64 sdiv (i64 ptrtoint (i64* @A to i64), i64 1) to i64*) ; X / 1 == X
  10. global i64* inttoptr (i64 srem (i64 ptrtoint (i64* @A to i64), i64 1) to i64*) ; X % 1 == 0
  11. global i64* inttoptr (i64 and (i64 ptrtoint (i64* @A to i64), i64 0) to i64*) ; X & 0 == 0
  12. global i64* inttoptr (i64 and (i64 ptrtoint (i64* @A to i64), i64 -1) to i64*) ; X & -1 == X
  13. global i64 or (i64 ptrtoint (i64* @A to i64), i64 -1) ; X | -1 == -1
  14. global i64* inttoptr (i64 xor (i64 ptrtoint (i64* @A to i64), i64 0) to i64*) ; X ^ 0 == X
  15. %Ty = type { i32, i32 }
  16. @B = external global %Ty
  17. global i1 icmp slt (i64* @A, i64* getelementptr (i64, i64* @A, i64 1)) ; true
  18. global i1 icmp ult (i64* @A, i64* getelementptr (i64, i64* @A, i64 1)) ; true
  19. global i1 icmp slt (i64* @A, i64* getelementptr (i64, i64* @A, i64 0)) ; false
  20. global i1 icmp slt (i32* getelementptr (%Ty, %Ty* @B, i64 0, i32 0),
  21. i32* getelementptr (%Ty, %Ty* @B, i64 0, i32 1)) ; true
  22. ;global i1 icmp ne (i64* @A, i64* bitcast (%Ty* @B to i64*)) ; true
  23. ; PR2206
  24. @cons = weak global i32 0, align 8 ; <i32*> [#uses=1]
  25. global i64 and (i64 ptrtoint (i32* @cons to i64), i64 7)