| ; Test stack pointer restore after setjmp() with the function-call safestack ABI. |
| ; RUN: opt -safe-stack -S -mtriple=arm-linux-androideabi < %s -o - | FileCheck %s |
| |
| @env = global [64 x i32] zeroinitializer, align 4 |
| |
| define void @f(i32 %b) safestack { |
| entry: |
| ; CHECK: %[[SPA:.*]] = call i8** @__safestack_pointer_address() |
| ; CHECK: %[[USP:.*]] = load i8*, i8** %[[SPA]] |
| ; CHECK: %[[USDP:.*]] = alloca i8* |
| ; CHECK: store i8* %[[USP]], i8** %[[USDP]] |
| ; CHECK: call i32 @setjmp |
| |
| %call = call i32 @setjmp(i32* getelementptr inbounds ([64 x i32], [64 x i32]* @env, i32 0, i32 0)) returns_twice |
| |
| ; CHECK: %[[USP2:.*]] = load i8*, i8** %[[USDP]] |
| ; CHECK: store i8* %[[USP2]], i8** %[[SPA]] |
| |
| %tobool = icmp eq i32 %b, 0 |
| br i1 %tobool, label %if.end, label %if.then |
| |
| if.then: |
| %0 = alloca [42 x i8], align 1 |
| %.sub = getelementptr inbounds [42 x i8], [42 x i8]* %0, i32 0, i32 0 |
| call void @_Z7CapturePv(i8* %.sub) |
| br label %if.end |
| |
| if.end: |
| ; CHECK: store i8* %[[USP:.*]], i8** %[[SPA:.*]] |
| |
| ret void |
| } |
| |
| declare i32 @setjmp(i32*) returns_twice |
| |
| declare void @_Z7CapturePv(i8*) |
