simple-32.ll 931 B

1234567891011121314151617181920212223242526272829
  1. ; RUN: opt < %s -bounds-checking -S | FileCheck %s
  2. target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
  3. %struct.s2_packed = type <{ i64, i32, i32, i32, i16, i8 }>
  4. ; CHECK-LABEL: @f
  5. ; CHECK-NOT: trap
  6. define i16 @f() {
  7. entry:
  8. %packed1 = alloca %struct.s2_packed, align 8
  9. %gep = getelementptr inbounds %struct.s2_packed, %struct.s2_packed* %packed1, i32 0, i32 4
  10. %ptr = bitcast i16* %gep to i32*
  11. %val = load i32, i32* %ptr, align 4
  12. %valt = trunc i32 %val to i16
  13. ret i16 %valt
  14. }
  15. ; CHECK-LABEL: @f
  16. ; CHECK: call void @llvm.trap()
  17. define i16 @f2() {
  18. entry:
  19. %packed1 = alloca %struct.s2_packed, align 8
  20. %gep = getelementptr inbounds %struct.s2_packed, %struct.s2_packed* %packed1, i32 0, i32 4
  21. %ptr = bitcast i16* %gep to i48*
  22. %val = load i48, i48* %ptr, align 4
  23. %valt = trunc i48 %val to i16
  24. ret i16 %valt
  25. }