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