PromoteMemToRegister.ll 622 B

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  1. ; Simple sanity check testcase. Both alloca's should be eliminated.
  2. ; RUN: opt < %s -mem2reg -S | not grep alloca
  3. define double @testfunc(i32 %i, double %j) {
  4. %I = alloca i32 ; <i32*> [#uses=4]
  5. %J = alloca double ; <double*> [#uses=2]
  6. store i32 %i, i32* %I
  7. store double %j, double* %J
  8. %t1 = load i32, i32* %I ; <i32> [#uses=1]
  9. %t2 = add i32 %t1, 1 ; <i32> [#uses=1]
  10. store i32 %t2, i32* %I
  11. %t3 = load i32, i32* %I ; <i32> [#uses=1]
  12. %t4 = sitofp i32 %t3 to double ; <double> [#uses=1]
  13. %t5 = load double, double* %J ; <double> [#uses=1]
  14. %t6 = fmul double %t4, %t5 ; <double> [#uses=1]
  15. ret double %t6
  16. }