aligned-overread.ll 1.0 KB

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  1. ; RUN: opt < %s -basicaa -dse -S | FileCheck %s
  2. target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
  3. target triple = "x86_64-apple-macosx10.8.0"
  4. %struct.S0 = type <{ i8, [4 x i8] }>
  5. @a = global { i8, i8, i8, i8, i8 } { i8 undef, i8 0, i8 0, i8 0, i8 0 }, align 8
  6. define i32 @main() nounwind uwtable ssp {
  7. entry:
  8. %tmp = load i8, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
  9. %tmp1 = or i8 %tmp, -128
  10. store i8 %tmp1, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
  11. %tmp2 = load i64, i64* bitcast ({ i8, i8, i8, i8, i8 }* @a to i64*), align 8
  12. store i8 11, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
  13. %tmp3 = trunc i64 %tmp2 to i32
  14. ret i32 %tmp3
  15. ; Make sure we don't delete either store here
  16. ; CHECK: @main
  17. ; CHECK: store i8 %tmp1
  18. ; CHECK: store i8 11
  19. }