44 lines
1.5 KiB
LLVM
44 lines
1.5 KiB
LLVM
; This check verifies that stack depth instrumentation works correctly.
|
|
; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=1 \
|
|
; RUN: -sanitizer-coverage-stack-depth -S | FileCheck %s
|
|
; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 \
|
|
; RUN: -sanitizer-coverage-stack-depth -sanitizer-coverage-trace-pc-guard \
|
|
; RUN: -S | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
; CHECK: @__sancov_lowest_stack = thread_local(initialexec) global i64 -1
|
|
@__sancov_lowest_stack = thread_local global i64 0, align 8
|
|
|
|
define i32 @foo() {
|
|
entry:
|
|
; CHECK-LABEL: define i32 @foo
|
|
; CHECK-NOT: call i8* @llvm.frameaddress.p0i8(i32 0)
|
|
; CHECK-NOT: @__sancov_lowest_stack
|
|
; CHECK: ret i32 7
|
|
|
|
ret i32 7
|
|
}
|
|
|
|
define i32 @bar() {
|
|
entry:
|
|
; CHECK-LABEL: define i32 @bar
|
|
; CHECK: [[framePtr:%[^ \t]+]] = call i8* @llvm.frameaddress.p0i8(i32 0)
|
|
; CHECK: [[frameInt:%[^ \t]+]] = ptrtoint i8* [[framePtr]] to [[intType:i[0-9]+]]
|
|
; CHECK: [[lowest:%[^ \t]+]] = load [[intType]], [[intType]]* @__sancov_lowest_stack
|
|
; CHECK: [[cmp:%[^ \t]+]] = icmp ult [[intType]] [[frameInt]], [[lowest]]
|
|
; CHECK: br i1 [[cmp]], label %[[ifLabel:[^ \t]+]], label
|
|
; CHECK: [[ifLabel]]:
|
|
; CHECK: store [[intType]] [[frameInt]], [[intType]]* @__sancov_lowest_stack
|
|
; CHECK: %call = call i32 @foo()
|
|
; CHECK: ret i32 %call
|
|
|
|
%call = call i32 @foo()
|
|
ret i32 %call
|
|
}
|
|
|
|
define weak_odr hidden i64* @_ZTW21__sancov_lowest_stack() {
|
|
ret i64* @__sancov_lowest_stack
|
|
}
|