1 ; RUN: opt -safe-stack -S -mtriple=x86_64-unknown < %s -o - | FileCheck %s 2 3 define void @foo() safestack sspreq { 4 entry: 5 ; CHECK: %[[USP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr 6 ; CHECK: %[[USST:.*]] = getelementptr i8, i8* %[[USP]], i32 -16 7 ; CHECK: store i8* %[[USST]], i8** @__safestack_unsafe_stack_ptr 8 9 ; CHECK: %[[A:.*]] = getelementptr i8, i8* %[[USP]], i32 -8 10 ; CHECK: %[[StackGuardSlot:.*]] = bitcast i8* %[[A]] to i8** 11 ; CHECK: %[[StackGuard:.*]] = load i8*, i8** @__stack_chk_guard 12 ; CHECK: store i8* %[[StackGuard]], i8** %[[StackGuardSlot]] 13 %a = alloca i8, align 1 14 15 ; CHECK: call void @Capture 16 call void @Capture(i8* %a) 17 18 ; CHECK: %[[B:.*]] = load i8*, i8** %[[StackGuardSlot]] 19 ; CHECK: %[[COND:.*]] = icmp ne i8* %[[StackGuard]], %[[B]] 20 ; CHECK: br i1 %[[COND]], {{.*}} !prof 21 22 ; CHECK: call void @__stack_chk_fail() 23 ; CHECK-NEXT: unreachable 24 25 ; CHECK: store i8* %[[USP]], i8** @__safestack_unsafe_stack_ptr 26 ; CHECK-NEXT: ret void 27 ret void 28 } 29 30 declare void @Capture(i8*) 31
