2006-03-03-BadArraySubscript.ll 1.5 KB

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  1. ; RUN: opt < %s -basicaa -aa-eval -disable-output 2>&1 | FileCheck %s
  2. ; TEST that A[1][0] may alias A[0][i].
  3. target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
  4. ; CHECK: 2 no alias responses
  5. define void @test(i32 %N) {
  6. entry:
  7. %X = alloca [3 x [3 x i32]] ; <[3 x [3 x i32]]*> [#uses=4]
  8. %tmp.24 = icmp sgt i32 %N, 0 ; <i1> [#uses=1]
  9. br i1 %tmp.24, label %no_exit, label %loopexit
  10. no_exit: ; preds = %no_exit, %entry
  11. %i.0.0 = phi i32 [ 0, %entry ], [ %inc, %no_exit ] ; <i32> [#uses=2]
  12. %tmp.6 = getelementptr [3 x [3 x i32]], [3 x [3 x i32]]* %X, i32 0, i32 0, i32 %i.0.0 ; <i32*> [#uses=1]
  13. store i32 1, i32* %tmp.6
  14. %tmp.8 = getelementptr [3 x [3 x i32]], [3 x [3 x i32]]* %X, i32 0, i32 0, i32 0 ; <i32*> [#uses=1]
  15. %tmp.9 = load i32, i32* %tmp.8 ; <i32> [#uses=1]
  16. %tmp.11 = getelementptr [3 x [3 x i32]], [3 x [3 x i32]]* %X, i32 0, i32 1, i32 0 ; <i32*> [#uses=1]
  17. %tmp.12 = load i32, i32* %tmp.11 ; <i32> [#uses=1]
  18. %tmp.13 = add i32 %tmp.12, %tmp.9 ; <i32> [#uses=1]
  19. %inc = add i32 %i.0.0, 1 ; <i32> [#uses=2]
  20. %tmp.2 = icmp slt i32 %inc, %N ; <i1> [#uses=1]
  21. br i1 %tmp.2, label %no_exit, label %loopexit
  22. loopexit: ; preds = %no_exit, %entry
  23. %Y.0.1 = phi i32 [ 0, %entry ], [ %tmp.13, %no_exit ] ; <i32> [#uses=1]
  24. %tmp.4 = getelementptr [3 x [3 x i32]], [3 x [3 x i32]]* %X, i32 0, i32 0 ; <[3 x i32]*> [#uses=1]
  25. %tmp.15 = call i32 (...) @foo( [3 x i32]* %tmp.4, i32 %Y.0.1 ) ; <i32> [#uses=0]
  26. ret void
  27. }
  28. declare i32 @foo(...)