1; RUN: opt -safe-stack -S -mtriple=x86_64-unknown < %s -o - | FileCheck %s 2 3define void @foo() safestack sspreq { 4entry: 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 30declare void @Capture(i8*) 31