| ; clang -target aarch64-eabi -O2 -march=armv8.5-a+memtag -fsanitize=memtag -S -emit-llvm test.cc |
| ; void bar() { |
| ; throw 42; |
| ; } |
| |
| ; void foo() { |
| ; int A0; |
| ; __asm volatile("" : : "r"(&A0)); |
| |
| ; try { |
| ; bar(); |
| ; } catch (int exc) { |
| ; } |
| |
| ; throw 15532; |
| ; } |
| |
| ; int main() { |
| ; try { |
| ; foo(); |
| ; } catch (int exc) { |
| ; } |
| |
| ; return 0; |
| ; } |
| |
| ; RUN: opt -S -stack-tagging %s -o - | FileCheck %s |
| |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| target triple = "aarch64-unknown-unknown-eabi" |
| |
| @_ZTIi = external dso_local constant i8* |
| |
| ; Function Attrs: noreturn sanitize_memtag |
| define dso_local void @_Z3barv() local_unnamed_addr #0 { |
| entry: |
| %exception = tail call i8* @__cxa_allocate_exception(i64 4) #4 |
| %0 = bitcast i8* %exception to i32* |
| store i32 42, i32* %0, align 16, !tbaa !2 |
| tail call void @__cxa_throw(i8* %exception, i8* bitcast (i8** @_ZTIi to i8*), i8* null) #5 |
| unreachable |
| } |
| |
| declare dso_local i8* @__cxa_allocate_exception(i64) local_unnamed_addr |
| |
| declare dso_local void @__cxa_throw(i8*, i8*, i8*) local_unnamed_addr |
| |
| ; Function Attrs: noreturn sanitize_memtag |
| define dso_local void @_Z3foov() local_unnamed_addr #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) { |
| entry: |
| %A0 = alloca i32, align 4 |
| %0 = bitcast i32* %A0 to i8* |
| call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %0) #4 |
| call void asm sideeffect "", "r"(i32* nonnull %A0) #4, !srcloc !6 |
| invoke void @_Z3barv() |
| to label %try.cont unwind label %lpad |
| |
| lpad: ; preds = %entry |
| %1 = landingpad { i8*, i32 } |
| cleanup |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %2 = extractvalue { i8*, i32 } %1, 1 |
| %3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #4 |
| %matches = icmp eq i32 %2, %3 |
| br i1 %matches, label %catch, label %ehcleanup |
| |
| catch: ; preds = %lpad |
| %4 = extractvalue { i8*, i32 } %1, 0 |
| %5 = call i8* @__cxa_begin_catch(i8* %4) #4 |
| call void @__cxa_end_catch() #4 |
| br label %try.cont |
| |
| try.cont: ; preds = %entry, %catch |
| %exception = call i8* @__cxa_allocate_exception(i64 4) #4 |
| %6 = bitcast i8* %exception to i32* |
| store i32 15532, i32* %6, align 16, !tbaa !2 |
| call void @__cxa_throw(i8* %exception, i8* bitcast (i8** @_ZTIi to i8*), i8* null) #5 |
| unreachable |
| |
| ehcleanup: ; preds = %lpad |
| call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %0) #4 |
| resume { i8*, i32 } %1 |
| } |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1 |
| |
| declare dso_local i32 @__gxx_personality_v0(...) |
| |
| ; Function Attrs: nounwind readnone |
| declare i32 @llvm.eh.typeid.for(i8*) #2 |
| |
| declare dso_local i8* @__cxa_begin_catch(i8*) local_unnamed_addr |
| |
| declare dso_local void @__cxa_end_catch() local_unnamed_addr |
| |
| ; Function Attrs: argmemonly nounwind willreturn |
| declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1 |
| |
| ; Function Attrs: norecurse sanitize_memtag |
| define dso_local i32 @main() local_unnamed_addr #3 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) { |
| entry: |
| ; CHECK-LABEL: entry: |
| %A0.i = alloca i32, align 4 |
| %0 = bitcast i32* %A0.i to i8* |
| call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %0) #4 |
| call void asm sideeffect "", "r"(i32* nonnull %A0.i) #4, !srcloc !6 |
| ; CHECK: call void @llvm.aarch64.settag(i8* %1, i64 16) |
| ; CHECK-NEXT: call void asm sideeffect |
| %exception.i6 = call i8* @__cxa_allocate_exception(i64 4) #4 |
| %1 = bitcast i8* %exception.i6 to i32* |
| store i32 42, i32* %1, align 16, !tbaa !2 |
| invoke void @__cxa_throw(i8* %exception.i6, i8* bitcast (i8** @_ZTIi to i8*), i8* null) #5 |
| to label %.noexc7 unwind label %lpad.i |
| |
| .noexc7: ; preds = %entry |
| unreachable |
| |
| lpad.i: ; preds = %entry |
| %2 = landingpad { i8*, i32 } |
| cleanup |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %3 = extractvalue { i8*, i32 } %2, 1 |
| %4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #4 |
| %matches.i = icmp eq i32 %3, %4 |
| br i1 %matches.i, label %catch.i, label %ehcleanup.i |
| |
| catch.i: ; preds = %lpad.i |
| %5 = extractvalue { i8*, i32 } %2, 0 |
| %6 = call i8* @__cxa_begin_catch(i8* %5) #4 |
| call void @__cxa_end_catch() #4 |
| %exception.i = call i8* @__cxa_allocate_exception(i64 4) #4 |
| %7 = bitcast i8* %exception.i to i32* |
| store i32 15532, i32* %7, align 16, !tbaa !2 |
| invoke void @__cxa_throw(i8* %exception.i, i8* bitcast (i8** @_ZTIi to i8*), i8* null) #5 |
| to label %.noexc unwind label %lpad |
| |
| .noexc: ; preds = %catch.i |
| unreachable |
| |
| ehcleanup.i: ; preds = %lpad.i |
| call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %0) #4 |
| br label %lpad.body |
| |
| lpad: ; preds = %catch.i |
| %8 = landingpad { i8*, i32 } |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %.pre = extractvalue { i8*, i32 } %8, 1 |
| br label %lpad.body |
| |
| lpad.body: ; preds = %ehcleanup.i, %lpad |
| %.pre-phi = phi i32 [ %3, %ehcleanup.i ], [ %.pre, %lpad ] |
| %eh.lpad-body = phi { i8*, i32 } [ %2, %ehcleanup.i ], [ %8, %lpad ] |
| %matches = icmp eq i32 %.pre-phi, %4 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| catch: ; preds = %lpad.body |
| %9 = extractvalue { i8*, i32 } %eh.lpad-body, 0 |
| %10 = call i8* @__cxa_begin_catch(i8* %9) #4 |
| call void @__cxa_end_catch() #4 |
| ret i32 0 |
| |
| eh.resume: ; preds = %lpad.body |
| resume { i8*, i32 } %eh.lpad-body |
| } |
| |
| attributes #0 = { noreturn sanitize_memtag "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+mte,+neon,+v8.5a" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { argmemonly nounwind willreturn } |
| attributes #2 = { nounwind readnone } |
| attributes #3 = { norecurse sanitize_memtag "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+mte,+neon,+v8.5a" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #4 = { nounwind } |
| attributes #5 = { noreturn } |
| |
| !llvm.module.flags = !{!0} |
| !llvm.ident = !{!1} |
| |
| !0 = !{i32 1, !"wchar_size", i32 4} |
| !1 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git c38188c5fe41751fda095edde1a878b2a051ae58)"} |
| !2 = !{!3, !3, i64 0} |
| !3 = !{!"int", !4, i64 0} |
| !4 = !{!"omnipotent char", !5, i64 0} |
| !5 = !{!"Simple C++ TBAA"} |
| !6 = !{i32 70} |
