| Gerolf Hoflehner | 87ddb65 | 2016-01-30 05:52:53 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -basicaa -gvn < %s | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128" |
| 4 | target triple = "i386-apple-macosx10.6.0" |
| 5 | |
| 6 | ; We incorrectly returned noalias in the example below for "tmp5" and |
| 7 | ; "tmp12" returning i32 32, since basicaa converted the offsets to 64b |
| 8 | ; and missed the wrap-around |
| 9 | |
| 10 | define i32 @foo(i8* %buffer) { |
| 11 | entry: |
| 12 | %tmp2 = getelementptr i8, i8* %buffer, i32 -2071408432 |
| 13 | %tmp3 = bitcast i8* %tmp2 to i32* |
| 14 | %tmp4 = getelementptr i8, i8* %buffer, i32 128 |
| 15 | %tmp5 = bitcast i8* %tmp4 to i32* |
| 16 | store i32 32, i32* %tmp5, align 4 |
| 17 | %tmp12 = getelementptr i32, i32* %tmp3, i32 -1629631508 |
| 18 | store i32 28, i32* %tmp12, align 4 |
| 19 | %tmp13 = getelementptr i8, i8* %buffer, i32 128 |
| 20 | %tmp14 = bitcast i8* %tmp13 to i32* |
| 21 | %tmp2083 = load i32, i32* %tmp14, align 4 |
| 22 | ; CHECK: ret i32 28 |
| 23 | ret i32 %tmp2083 |
| 24 | } |