add-shrink.ll 433 B

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  1. ; RUN: opt < %s -instcombine -S | FileCheck %s
  2. ; CHECK-LABEL: define i64 @test
  3. define i64 @test1(i32 %A) {
  4. ; CHECK: %[[ADD:.*]] = add nsw i32 %B, %C
  5. ; CHECK: %F = sext i32 %[[ADD]] to i64
  6. ; CHECK: ret i64 %F
  7. %B = ashr i32 %A, 7 ; <i32> [#uses=1]
  8. %C = ashr i32 %A, 9 ; <i32> [#uses=1]
  9. %D = sext i32 %B to i64 ; <i64> [#uses=1]
  10. %E = sext i32 %C to i64 ; <i64> [#uses=1]
  11. %F = add i64 %D, %E ; <i64> [#uses=1]
  12. ret i64 %F
  13. }