llvm-project/llvm/test/Instrumentation/SanitizerCoverage/trace-pc-guard.ll

81 lines
4.6 KiB
LLVM

; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=4 -sanitizer-coverage-trace-pc-guard -mtriple=x86_64 -S | FileCheck %s --check-prefixes=CHECK,COMDAT,ELF
; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=4 -sanitizer-coverage-trace-pc-guard -mtriple=aarch64-apple-darwin -S | FileCheck %s --check-prefixes=CHECK,MACHO
; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=4 -sanitizer-coverage-trace-pc-guard -mtriple=x86_64-windows -S | FileCheck %s --check-prefixes=CHECK,COMDAT,WIN
; COMDAT: $foo = comdat nodeduplicate
; COMDAT: $CallViaVptr = comdat nodeduplicate
; COMDAT: $DirectBitcastCall = comdat nodeduplicate
; ELF: @__sancov_gen_ = private global [3 x i32] zeroinitializer, section "__sancov_guards", comdat($foo), align 4{{$}}
; ELF-NEXT: @__sancov_gen_.1 = private global [1 x i32] zeroinitializer, section "__sancov_guards", comdat($CallViaVptr), align 4{{$}}
; ELF-NEXT: @__sancov_gen_.2 = private global [1 x i32] zeroinitializer, section "__sancov_guards", comdat($DirectBitcastCall), align 4{{$}}
; MACHO: @__sancov_gen_ = private global [3 x i32] zeroinitializer, section "__DATA,__sancov_guards", align 4{{$}}
; MACHO-NEXT: @__sancov_gen_.1 = private global [1 x i32] zeroinitializer, section "__DATA,__sancov_guards", align 4{{$}}
; MACHO-NEXT: @__sancov_gen_.2 = private global [1 x i32] zeroinitializer, section "__DATA,__sancov_guards", align 4{{$}}
; WIN: @__sancov_gen_ = private global [3 x i32] zeroinitializer, section ".SCOV$GM", comdat($foo), align 4{{$}}
; WIN-NEXT: @__sancov_gen_.1 = private global [1 x i32] zeroinitializer, section ".SCOV$GM", comdat($CallViaVptr), align 4{{$}}
; WIN-NEXT: @__sancov_gen_.2 = private global [1 x i32] zeroinitializer, section ".SCOV$GM", comdat($DirectBitcastCall), align 4{{$}}
; ELF: @llvm.used = appending global [1 x i8*] [i8* bitcast (void ()* @sancov.module_ctor_trace_pc_guard to i8*)]
; ELF: @llvm.compiler.used = appending global [3 x i8*] [i8* bitcast ([3 x i32]* @__sancov_gen_ to i8*), i8* bitcast ([1 x i32]* @__sancov_gen_.1 to i8*), i8* bitcast ([1 x i32]* @__sancov_gen_.2 to i8*)], section "llvm.metadata"
; MACHO: @llvm.used = appending global [4 x i8*] [i8* bitcast (void ()* @sancov.module_ctor_trace_pc_guard to i8*), i8* bitcast ([3 x i32]* @__sancov_gen_ to i8*), i8* bitcast ([1 x i32]* @__sancov_gen_.1 to i8*), i8* bitcast ([1 x i32]* @__sancov_gen_.2 to i8*)]
; MACHO-NOT: @llvm.compiler.used =
; WIN: @llvm.used = appending global [1 x i8*] [i8* bitcast (void ()* @sancov.module_ctor_trace_pc_guard to i8*)], section "llvm.metadata"
; WIN-NEXT: @llvm.compiler.used = appending global [3 x i8*] [i8* bitcast ([3 x i32]* @__sancov_gen_ to i8*), i8* bitcast ([1 x i32]* @__sancov_gen_.1 to i8*), i8* bitcast ([1 x i32]* @__sancov_gen_.2 to i8*)], section "llvm.metadata"
; CHECK-LABEL: define void @foo
; CHECK: call void @__sanitizer_cov_trace_pc
; CHECK: ret void
define void @foo(i32* %a) sanitize_address {
entry:
%tobool = icmp eq i32* %a, null
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
store i32 0, i32* %a, align 4
br label %if.end
if.end: ; preds = %entry, %if.then
ret void
}
; CHECK-LABEL: define void @CallViaVptr
; CHECK: call void @__sanitizer_cov_trace_pc_indir
; CHECK: call void @__sanitizer_cov_trace_pc_indir
; CHECK: ret void
%struct.StructWithVptr = type { i32 (...)** }
define void @CallViaVptr(%struct.StructWithVptr* %foo) uwtable sanitize_address {
entry:
%0 = bitcast %struct.StructWithVptr* %foo to void (%struct.StructWithVptr*)***
%vtable = load void (%struct.StructWithVptr*)**, void (%struct.StructWithVptr*)*** %0, align 8
%1 = load void (%struct.StructWithVptr*)*, void (%struct.StructWithVptr*)** %vtable, align 8
tail call void %1(%struct.StructWithVptr* %foo)
tail call void %1(%struct.StructWithVptr* %foo)
tail call void asm sideeffect "", ""()
ret void
}
; CHECK-LABEL: define void @DirectBitcastCall
; CHECK-NEXT: call void @__sanitizer_cov_trace_pc_guard
; CHECK-NEXT: call void bitcast (i32 ()* @direct_callee to void ()*)()
; CHECK-NEXT: ret void
declare i32 @direct_callee()
define void @DirectBitcastCall() sanitize_address {
call void bitcast (i32 ()* @direct_callee to void ()*)()
ret void
}
; ELF-LABEL: define internal void @sancov.module_ctor_trace_pc_guard() #2 comdat {
; MACHO-LABEL: define internal void @sancov.module_ctor_trace_pc_guard() #2 {
; CHECK: attributes #2 = { nounwind }