| ; RUN: llc -mtriple=arm64-apple-macosx -fast-isel %s -o - -start-before=stack-protector -stop-after=stack-protector | FileCheck %s |
| |
| @var = global ptr null |
| |
| declare void @callee() |
| |
| define void @caller1() ssp { |
| ; CHECK-LABEL: define void @caller1() |
| ; Prologue: |
| ; CHECK: @llvm.stackguard |
| |
| ; CHECK: [[GUARD:%.*]] = call ptr @llvm.stackguard() |
| ; 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() ssp { |
| ; CHECK-LABEL: define void @justret() |
| ; Prologue: |
| ; CHECK: @llvm.stackguard |
| |
| ; CHECK: [[GUARD:%.*]] = call ptr @llvm.stackguard() |
| ; 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() ssp { |
| ; CHECK-LABEL: define ptr @caller2() |
| ; Prologue: |
| ; CHECK: @llvm.stackguard |
| |
| ; CHECK: [[GUARD:%.*]] = call ptr @llvm.stackguard() |
| ; 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() ssp { |
| ; CHECK-LABEL: define void @caller3() |
| ; Prologue: |
| ; CHECK: @llvm.stackguard |
| |
| ; CHECK: [[GUARD:%.*]] = call ptr @llvm.stackguard() |
| ; 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() ssp { |
| ; CHECK-LABEL: define ptr @caller4() |
| ; Prologue: |
| ; CHECK: @llvm.stackguard |
| |
| ; CHECK: [[GUARD:%.*]] = call ptr @llvm.stackguard() |
| ; 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 |
| } |