invariant_value_first.ll 742 B

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  1. ; Check that the index of 'P[outer]' is pulled out of the loop.
  2. ; RUN: opt < %s -loop-reduce -S | \
  3. ; RUN: not grep "getelementptr.*%outer.*%INDVAR"
  4. target datalayout = "e-p:32:32:32-n8:16:32"
  5. declare i1 @pred()
  6. declare i32 @foo()
  7. define void @test([10000 x i32]* %P) {
  8. ; <label>:0
  9. %outer = call i32 @foo( ) ; <i32> [#uses=1]
  10. br label %Loop
  11. Loop: ; preds = %Loop, %0
  12. %INDVAR = phi i32 [ 0, %0 ], [ %INDVAR2, %Loop ] ; <i32> [#uses=2]
  13. %STRRED = getelementptr [10000 x i32], [10000 x i32]* %P, i32 %outer, i32 %INDVAR ; <i32*> [#uses=1]
  14. store i32 0, i32* %STRRED
  15. %INDVAR2 = add i32 %INDVAR, 1 ; <i32> [#uses=1]
  16. %cond = call i1 @pred( ) ; <i1> [#uses=1]
  17. br i1 %cond, label %Loop, label %Out
  18. Out: ; preds = %Loop
  19. ret void
  20. }