; RUN: llc -mtriple=x86_64-linux-gnu -fast-isel %s -o - -start-before=stack-protector -stop-after=stack-protector | FileCheck %s @var = global ptr null declare void @callee() define void @caller1() sspreq { ; CHECK-LABEL: define void @caller1() ; Prologue: ; CHECK: @llvm.stackprotector ; CHECK: [[GUARD:%.*]] = load volatile ptr, ptr ; CHECK: [[TOKEN:%.*]] = load volatile ptr, ptr {{%.*}} ; CHECK: [[TST:%.*]] = icmp eq ptr [[GUARD]], [[TOKEN]] ; CHECK: br i1 [[TST]] ; CHECK: musttail call void @callee() ; CHECK-NEXT: ret void %var = alloca [2 x i64] store ptr %var, ptr @var musttail call void @callee() ret void } define void @justret() sspreq { ; CHECK-LABEL: define void @justret() ; Prologue: ; CHECK: @llvm.stackprotector ; CHECK: [[GUARD:%.*]] = load volatile ptr, ptr ; CHECK: [[TOKEN:%.*]] = load volatile ptr, ptr {{%.*}} ; CHECK: [[TST:%.*]] = icmp eq ptr [[GUARD]], [[TOKEN]] ; CHECK: br i1 [[TST]] ; CHECK: ret void %var = alloca [2 x i64] store ptr %var, ptr @var br label %retblock retblock: ret void } declare ptr @callee2() define ptr @caller2() sspreq { ; CHECK-LABEL: define ptr @caller2() ; Prologue: ; CHECK: @llvm.stackprotector ; CHECK: [[GUARD:%.*]] = load volatile ptr, ptr ; CHECK: [[TOKEN:%.*]] = load volatile ptr, ptr {{%.*}} ; CHECK: [[TST:%.*]] = icmp eq ptr [[GUARD]], [[TOKEN]] ; CHECK: br i1 [[TST]] ; CHECK: [[TMP:%.*]] = musttail call ptr @callee2() ; CHECK-NEXT: ret ptr [[TMP]] %var = alloca [2 x i64] store ptr %var, ptr @var %tmp = musttail call ptr @callee2() ret ptr %tmp } define void @caller3() sspreq { ; CHECK-LABEL: define void @caller3() ; Prologue: ; CHECK: @llvm.stackprotector ; CHECK: [[GUARD:%.*]] = load volatile ptr, ptr ; CHECK: [[TOKEN:%.*]] = load volatile ptr, ptr {{%.*}} ; CHECK: [[TST:%.*]] = icmp eq ptr [[GUARD]], [[TOKEN]] ; CHECK: br i1 [[TST]] ; CHECK: tail call void @callee() ; CHECK-NEXT: ret void %var = alloca [2 x i64] store ptr %var, ptr @var tail call void @callee() ret void } define ptr @caller4() sspreq { ; CHECK-LABEL: define ptr @caller4() ; Prologue: ; CHECK: @llvm.stackprotector ; CHECK: [[GUARD:%.*]] = load volatile ptr, ptr ; CHECK: [[TOKEN:%.*]] = load volatile ptr, ptr {{%.*}} ; CHECK: [[TST:%.*]] = icmp eq ptr [[GUARD]], [[TOKEN]] ; CHECK: br i1 [[TST]] ; CHECK: [[TMP:%.*]] = tail call ptr @callee2() ; CHECK-NEXT: ret ptr [[TMP]] %var = alloca [2 x i64] store ptr %var, ptr @var %tmp = tail call ptr @callee2() ret ptr %tmp }