forked from OSchip/llvm-project
81 lines
4.6 KiB
LLVM
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
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; 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
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; 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
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; COMDAT: $foo = comdat nodeduplicate
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; COMDAT: $CallViaVptr = comdat nodeduplicate
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; COMDAT: $DirectBitcastCall = comdat nodeduplicate
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; ELF: @__sancov_gen_ = private global [3 x i32] zeroinitializer, section "__sancov_guards", comdat($foo), align 4{{$}}
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; ELF-NEXT: @__sancov_gen_.1 = private global [1 x i32] zeroinitializer, section "__sancov_guards", comdat($CallViaVptr), align 4{{$}}
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; ELF-NEXT: @__sancov_gen_.2 = private global [1 x i32] zeroinitializer, section "__sancov_guards", comdat($DirectBitcastCall), align 4{{$}}
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; MACHO: @__sancov_gen_ = private global [3 x i32] zeroinitializer, section "__DATA,__sancov_guards", align 4{{$}}
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; MACHO-NEXT: @__sancov_gen_.1 = private global [1 x i32] zeroinitializer, section "__DATA,__sancov_guards", align 4{{$}}
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; MACHO-NEXT: @__sancov_gen_.2 = private global [1 x i32] zeroinitializer, section "__DATA,__sancov_guards", align 4{{$}}
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; WIN: @__sancov_gen_ = private global [3 x i32] zeroinitializer, section ".SCOV$GM", comdat($foo), align 4{{$}}
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; WIN-NEXT: @__sancov_gen_.1 = private global [1 x i32] zeroinitializer, section ".SCOV$GM", comdat($CallViaVptr), align 4{{$}}
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; WIN-NEXT: @__sancov_gen_.2 = private global [1 x i32] zeroinitializer, section ".SCOV$GM", comdat($DirectBitcastCall), align 4{{$}}
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; ELF: @llvm.used = appending global [1 x i8*] [i8* bitcast (void ()* @sancov.module_ctor_trace_pc_guard to i8*)]
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; 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"
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; 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*)]
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; MACHO-NOT: @llvm.compiler.used =
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; WIN: @llvm.used = appending global [1 x i8*] [i8* bitcast (void ()* @sancov.module_ctor_trace_pc_guard to i8*)], section "llvm.metadata"
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; 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"
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; CHECK-LABEL: define void @foo
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; CHECK: call void @__sanitizer_cov_trace_pc
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; CHECK: ret void
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define void @foo(i32* %a) sanitize_address {
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entry:
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%tobool = icmp eq i32* %a, null
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br i1 %tobool, label %if.end, label %if.then
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if.then: ; preds = %entry
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store i32 0, i32* %a, align 4
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br label %if.end
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if.end: ; preds = %entry, %if.then
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ret void
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}
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; CHECK-LABEL: define void @CallViaVptr
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; CHECK: call void @__sanitizer_cov_trace_pc_indir
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; CHECK: call void @__sanitizer_cov_trace_pc_indir
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; CHECK: ret void
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%struct.StructWithVptr = type { i32 (...)** }
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define void @CallViaVptr(%struct.StructWithVptr* %foo) uwtable sanitize_address {
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entry:
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%0 = bitcast %struct.StructWithVptr* %foo to void (%struct.StructWithVptr*)***
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%vtable = load void (%struct.StructWithVptr*)**, void (%struct.StructWithVptr*)*** %0, align 8
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%1 = load void (%struct.StructWithVptr*)*, void (%struct.StructWithVptr*)** %vtable, align 8
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tail call void %1(%struct.StructWithVptr* %foo)
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tail call void %1(%struct.StructWithVptr* %foo)
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tail call void asm sideeffect "", ""()
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ret void
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}
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; CHECK-LABEL: define void @DirectBitcastCall
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; CHECK-NEXT: call void @__sanitizer_cov_trace_pc_guard
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; CHECK-NEXT: call void bitcast (i32 ()* @direct_callee to void ()*)()
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; CHECK-NEXT: ret void
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declare i32 @direct_callee()
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define void @DirectBitcastCall() sanitize_address {
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call void bitcast (i32 ()* @direct_callee to void ()*)()
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ret void
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}
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; ELF-LABEL: define internal void @sancov.module_ctor_trace_pc_guard() #2 comdat {
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; MACHO-LABEL: define internal void @sancov.module_ctor_trace_pc_guard() #2 {
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; CHECK: attributes #2 = { nounwind }
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