diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp index f01813080751..0d26ac9f9699 100644 --- a/clang/lib/CodeGen/BackendUtil.cpp +++ b/clang/lib/CodeGen/BackendUtil.cpp @@ -470,6 +470,9 @@ static bool initTargetOptions(DiagnosticsEngine &Diags, Options.JMCInstrument = CodeGenOpts.JMCInstrument; Options.XCOFFReadOnlyPointers = CodeGenOpts.XCOFFReadOnlyPointers; + if (LangOpts.Kernel) + Options.TrapUnreachable = true; + switch (CodeGenOpts.getSwiftAsyncFramePointer()) { case CodeGenOptions::SwiftAsyncFramePointerKind::Auto: Options.SwiftAsyncFramePointer = diff --git a/clang/test/CodeGen/MSKernel/noreturn.c b/clang/test/CodeGen/MSKernel/noreturn.c new file mode 100644 index 000000000000..848603cb51ba --- /dev/null +++ b/clang/test/CodeGen/MSKernel/noreturn.c @@ -0,0 +1,24 @@ +// REQUIRES: x86-registered-target +// RUN: %clang_cc1 -fms-kernel -fms-extensions -triple x86_64-windows-msvc -O2 -S %s -o - | FileCheck %s + +// CHECK-LABEL: my_noreturn_func: +// CHECK: callq bugcheck +// CHECK-NEXT: ud2 + +// CHECK-LABEL: my_noreturn_func2: +// CHECK: movl $0, (%rax) +// CHECK-NEXT: ud2 + +void bugcheck(int code); + +extern long volatile *gtrap; + +__declspec(noreturn) void my_noreturn_func(void) { + bugcheck(0x42); +} + + +__declspec(noreturn) void my_noreturn_func2(void) { + *gtrap = 0; +} +