| Peter Collingbourne | 82437bf | 2015-06-15 21:07:11 +0000 | [diff] [blame] | 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 | @.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1 |
| 5 | |
| 6 | ; array of [16 x i8] |
| 7 | |
| 8 | define void @foo(i8* %a) nounwind uwtable safestack { |
| 9 | entry: |
| 10 | ; CHECK: %[[USP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr |
| 11 | |
| 12 | ; CHECK: %[[USST:.*]] = getelementptr i8, i8* %[[USP]], i32 -16 |
| 13 | |
| 14 | ; CHECK: store i8* %[[USST]], i8** @__safestack_unsafe_stack_ptr |
| 15 | |
| 16 | ; CHECK: %[[AADDR:.*]] = alloca i8*, align 8 |
| 17 | %a.addr = alloca i8*, align 8 |
| 18 | |
| 19 | ; CHECK: %[[BUFPTR:.*]] = getelementptr i8, i8* %[[USP]], i32 -16 |
| 20 | ; CHECK: %[[BUFPTR2:.*]] = bitcast i8* %[[BUFPTR]] to [16 x i8]* |
| 21 | %buf = alloca [16 x i8], align 16 |
| 22 | |
| 23 | ; CHECK: store i8* {{.*}}, i8** %[[AADDR]], align 8 |
| 24 | store i8* %a, i8** %a.addr, align 8 |
| 25 | |
| 26 | ; CHECK: %[[GEP:.*]] = getelementptr inbounds [16 x i8], [16 x i8]* %[[BUFPTR2]], i32 0, i32 0 |
| 27 | %gep = getelementptr inbounds [16 x i8], [16 x i8]* %buf, i32 0, i32 0 |
| 28 | |
| 29 | ; CHECK: %[[A2:.*]] = load i8*, i8** %[[AADDR]], align 8 |
| 30 | %a2 = load i8*, i8** %a.addr, align 8 |
| 31 | |
| 32 | ; CHECK: call i8* @strcpy(i8* %[[GEP]], i8* %[[A2]]) |
| 33 | %call = call i8* @strcpy(i8* %gep, i8* %a2) |
| 34 | |
| 35 | ; CHECK: store i8* %[[USP]], i8** @__safestack_unsafe_stack_ptr |
| 36 | ret void |
| 37 | } |
| 38 | |
| 39 | declare i8* @strcpy(i8*, i8*) |