Mercurial > hg > CbC > CbC_llvm
comparison test/Transforms/SafeStack/byval.ll @ 100:7d135dc70f03 LLVM 3.9
LLVM 3.9
author | Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp> |
---|---|
date | Tue, 26 Jan 2016 22:53:40 +0900 (2016-01-26) |
parents | |
children |
comparison
equal
deleted
inserted
replaced
96:6418606d0ead | 100:7d135dc70f03 |
---|---|
1 ; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s | |
2 ; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s | |
3 | |
4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" | |
5 target triple = "x86_64-unknown-linux-gnu" | |
6 | |
7 %struct.S = type { [100 x i32] } | |
8 | |
9 ; Safe access to a byval argument. | |
10 define i32 @ByValSafe(%struct.S* byval nocapture readonly align 8 %zzz) norecurse nounwind readonly safestack uwtable { | |
11 entry: | |
12 ; CHECK-LABEL: @ByValSafe | |
13 ; CHECK-NOT: __safestack_unsafe_stack_ptr | |
14 ; CHECK: ret i32 | |
15 %arrayidx = getelementptr inbounds %struct.S, %struct.S* %zzz, i64 0, i32 0, i64 3 | |
16 %0 = load i32, i32* %arrayidx, align 4 | |
17 ret i32 %0 | |
18 } | |
19 | |
20 ; Unsafe access to a byval argument. | |
21 ; Argument is copied to the unsafe stack. | |
22 define i32 @ByValUnsafe(%struct.S* byval nocapture readonly align 8 %zzz, i64 %idx) norecurse nounwind readonly safestack uwtable { | |
23 entry: | |
24 ; CHECK-LABEL: @ByValUnsafe | |
25 ; CHECK: %[[A:.*]] = load {{.*}} @__safestack_unsafe_stack_ptr | |
26 ; CHECK: store {{.*}} @__safestack_unsafe_stack_ptr | |
27 ; CHECK: %[[B:.*]] = getelementptr i8, i8* %[[A]], i32 -400 | |
28 ; CHECK: %[[C:.*]] = bitcast %struct.S* %zzz to i8* | |
29 ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %[[B]], i8* %[[C]], i64 400, i32 8, i1 false) | |
30 ; CHECK: ret i32 | |
31 %arrayidx = getelementptr inbounds %struct.S, %struct.S* %zzz, i64 0, i32 0, i64 %idx | |
32 %0 = load i32, i32* %arrayidx, align 4 | |
33 ret i32 %0 | |
34 } | |
35 | |
36 ; Highly aligned byval argument. | |
37 define i32 @ByValUnsafeAligned(%struct.S* byval nocapture readonly align 64 %zzz, i64 %idx) norecurse nounwind readonly safestack uwtable { | |
38 entry: | |
39 ; CHECK-LABEL: @ByValUnsafeAligned | |
40 ; CHECK: %[[A:.*]] = load {{.*}} @__safestack_unsafe_stack_ptr | |
41 ; CHECK: %[[B:.*]] = ptrtoint i8* %[[A]] to i64 | |
42 ; CHECK: and i64 %[[B]], -64 | |
43 ; CHECK: ret i32 | |
44 %arrayidx = getelementptr inbounds %struct.S, %struct.S* %zzz, i64 0, i32 0, i64 0 | |
45 %0 = load i32, i32* %arrayidx, align 64 | |
46 %arrayidx2 = getelementptr inbounds %struct.S, %struct.S* %zzz, i64 0, i32 0, i64 %idx | |
47 %1 = load i32, i32* %arrayidx2, align 4 | |
48 %add = add nsw i32 %1, %0 | |
49 ret i32 %add | |
50 } | |
51 |