1; This check verifies that stack depth instrumentation works correctly. 2; RUN: opt < %s -sancov -sanitizer-coverage-level=1 \ 3; RUN: -sanitizer-coverage-stack-depth -S -enable-new-pm=0 | FileCheck %s 4; RUN: opt < %s -sancov -sanitizer-coverage-level=3 \ 5; RUN: -sanitizer-coverage-stack-depth -sanitizer-coverage-trace-pc-guard \ 6; RUN: -S -enable-new-pm=0 | FileCheck %s 7; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=1 \ 8; RUN: -sanitizer-coverage-stack-depth -S | FileCheck %s 9; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 \ 10; RUN: -sanitizer-coverage-stack-depth -sanitizer-coverage-trace-pc-guard \ 11; RUN: -S | FileCheck %s 12 13target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 14target triple = "x86_64-unknown-linux-gnu" 15 16; CHECK: @__sancov_lowest_stack = thread_local(initialexec) global i64 -1 17@__sancov_lowest_stack = thread_local global i64 0, align 8 18 19define i32 @foo() { 20entry: 21; CHECK-LABEL: define i32 @foo 22; CHECK-NOT: call i8* @llvm.frameaddress.p0i8(i32 0) 23; CHECK-NOT: @__sancov_lowest_stack 24; CHECK: ret i32 7 25 26 ret i32 7 27} 28 29define i32 @bar() { 30entry: 31; CHECK-LABEL: define i32 @bar 32; CHECK: [[framePtr:%[^ \t]+]] = call i8* @llvm.frameaddress.p0i8(i32 0) 33; CHECK: [[frameInt:%[^ \t]+]] = ptrtoint i8* [[framePtr]] to [[intType:i[0-9]+]] 34; CHECK: [[lowest:%[^ \t]+]] = load [[intType]], [[intType]]* @__sancov_lowest_stack 35; CHECK: [[cmp:%[^ \t]+]] = icmp ult [[intType]] [[frameInt]], [[lowest]] 36; CHECK: br i1 [[cmp]], label %[[ifLabel:[^ \t]+]], label 37; CHECK: [[ifLabel]]: 38; CHECK: store [[intType]] [[frameInt]], [[intType]]* @__sancov_lowest_stack 39; CHECK: %call = call i32 @foo() 40; CHECK: ret i32 %call 41 42 %call = call i32 @foo() 43 ret i32 %call 44} 45 46define weak_odr hidden i64* @_ZTW21__sancov_lowest_stack() { 47 ret i64* @__sancov_lowest_stack 48} 49