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Differential D131575 Diff 453355 llvm/test/Instrumentation/HWAddressSanitizer/RISCV/exception-lifetime.ll
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llvm/test/Instrumentation/HWAddressSanitizer/RISCV/exception-lifetime.ll
- This file was added.
| ; Test allocas with multiple lifetime ends, as frequently seen for exception | |||||
| ; handling. | |||||
| ; | |||||
| ; RUN: opt -passes=hwasan -hwasan-use-after-scope -S -o - %s | FileCheck %s --check-prefix=CHECK | |||||
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" | |||||
| target triple = "riscv64-unknown-linux" | |||||
| declare void @mayFail(i32* %x) sanitize_hwaddress | |||||
| declare void @onExcept(i32* %x) sanitize_hwaddress | |||||
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind | |||||
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind | |||||
| declare i32 @__gxx_personality_v0(...) | |||||
| define void @test() sanitize_hwaddress personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) { | |||||
| entry: | |||||
| %x = alloca i32, align 8 | |||||
| %exn.slot = alloca i8*, align 8 | |||||
| %ehselector.slot = alloca i32, align 4 | |||||
| %0 = bitcast i32* %x to i8* | |||||
| call void @llvm.lifetime.start.p0i8(i64 8, i8* %0) | |||||
| invoke void @mayFail(i32* %x) to label %invoke.cont unwind label %lpad | |||||
| ; CHECK: [[CAST:%.*]] = bitcast { i32, [12 x i8] }* %x to i32* | |||||
| ; CHECK: [[TMP1:%.*]] = bitcast i32* {{.*}}[[CAST]] to i8* | |||||
| invoke.cont: ; preds = %entry | |||||
| ; CHECK: invoke.cont: | |||||
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* align 1 %{{.*}}, i8 0, i64 1, i1 false) | |||||
| ; CHECK: call void @llvm.lifetime.end.p0i8(i64 16, i8* {{.*}}[[TMP1]]) | |||||
| ; CHECK: ret void | |||||
| %1 = bitcast i32* %x to i8* | |||||
| call void @llvm.lifetime.end.p0i8(i64 8, i8* %1) | |||||
| ret void | |||||
| lpad: ; preds = %entry | |||||
| ; CHECK: lpad | |||||
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* align 1 %{{.*}}, i8 0, i64 1, i1 false) | |||||
| ; CHECK: call void @llvm.lifetime.end.p0i8(i64 16, i8* {{.*}}[[TMP1]]) | |||||
| ; CHECK: br label %eh.resume | |||||
| %2 = landingpad { i8*, i32 } | |||||
| cleanup | |||||
| %3 = extractvalue { i8*, i32 } %2, 0 | |||||
| store i8* %3, i8** %exn.slot, align 8 | |||||
| %4 = extractvalue { i8*, i32 } %2, 1 | |||||
| store i32 %4, i32* %ehselector.slot, align 4 | |||||
| call void @onExcept(i32* %x) #18 | |||||
| %5 = bitcast i32* %x to i8* | |||||
| call void @llvm.lifetime.end.p0i8(i64 8, i8* %5) | |||||
| br label %eh.resume | |||||
| eh.resume: ; preds = %lpad | |||||
| %exn = load i8*, i8** %exn.slot, align 8 | |||||
| %sel = load i32, i32* %ehselector.slot, align 4 | |||||
| %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn, 0 | |||||
| %lpad.val1 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1 | |||||
| resume { i8*, i32 } %lpad.val1 | |||||
| } | |||||