| Evgeniy Stepanov | 45fa0fd | 2016-06-16 22:34:04 +0000 | [diff] [blame] | 1 | ; Test that unsafe alloca address calculation is done immediately before each use. |
| 2 | ; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s |
| 3 | ; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s |
| 4 | |
| 5 | define void @f() safestack { |
| 6 | entry: |
| 7 | %x0 = alloca i32, align 4 |
| 8 | %x1 = alloca i32, align 4 |
| 9 | |
| 10 | ; CHECK: %[[A:.*]] = getelementptr i8, i8* %{{.*}}, i32 -4 |
| 11 | ; CHECK: %[[X0:.*]] = bitcast i8* %[[A]] to i32* |
| 12 | ; CHECK: call void @use(i32* %[[X0]]) |
| 13 | call void @use(i32* %x0) |
| 14 | |
| 15 | ; CHECK: %[[B:.*]] = getelementptr i8, i8* %{{.*}}, i32 -8 |
| 16 | ; CHECK: %[[X1:.*]] = bitcast i8* %[[B]] to i32* |
| 17 | ; CHECK: call void @use(i32* %[[X1]]) |
| 18 | call void @use(i32* %x1) |
| 19 | ret void |
| 20 | } |
| 21 | |
| 22 | declare void @use(i32*) |