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Diffstat (limited to 'test/Analysis/BasicAA/aligned-overread.ll')
| -rw-r--r-- | test/Analysis/BasicAA/aligned-overread.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/Analysis/BasicAA/aligned-overread.ll b/test/Analysis/BasicAA/aligned-overread.ll new file mode 100644 index 0000000..b05f8eb --- /dev/null +++ b/test/Analysis/BasicAA/aligned-overread.ll @@ -0,0 +1,25 @@ +; RUN: opt < %s -basicaa -dse -S | FileCheck %s + +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" +target triple = "x86_64-apple-macosx10.8.0" + +%struct.S0 = type <{ i8, [4 x i8] }> + +@a = global { i8, i8, i8, i8, i8 } { i8 undef, i8 0, i8 0, i8 0, i8 0 }, align 8 + +define i32 @main() nounwind uwtable ssp { +entry: + %tmp = load i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4 + %tmp1 = or i8 %tmp, -128 + store i8 %tmp1, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4 + %tmp2 = load i64* bitcast ({ i8, i8, i8, i8, i8 }* @a to i64*), align 8 + store i8 11, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4 + %tmp3 = trunc i64 %tmp2 to i32 + ret i32 %tmp3 + +; Make sure we don't delete either store here +; CHECK: @main +; CHECK: store i8 %tmp1 +; CHECK: store i8 11 +} + |