diff options
Diffstat (limited to 'test/CodeGen/X86/win32-eh-states.ll')
| -rw-r--r-- | test/CodeGen/X86/win32-eh-states.ll | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/test/CodeGen/X86/win32-eh-states.ll b/test/CodeGen/X86/win32-eh-states.ll new file mode 100644 index 0000000..8db127d --- /dev/null +++ b/test/CodeGen/X86/win32-eh-states.ll @@ -0,0 +1,112 @@ +; RUN: llc -mtriple=i686-pc-windows-msvc < %s | FileCheck %s + +; Based on this source: +; extern "C" void may_throw(int); +; void f() { +; try { +; may_throw(1); +; try { +; may_throw(2); +; } catch (int) { +; may_throw(3); +; } +; } catch (int) { +; may_throw(4); +; } +; } + +%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] } +%eh.CatchHandlerType = type { i32, i8* } + +declare void @may_throw(i32) +declare i32 @__CxxFrameHandler3(...) +declare void @llvm.eh.begincatch(i8*, i8*) +declare void @llvm.eh.endcatch() +declare i32 @llvm.eh.typeid.for(i8*) + +$"\01??_R0H@8" = comdat any + +@"\01??_7type_info@@6B@" = external constant i8* +@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat +@llvm.eh.handlertype.H.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata" + +define void @f() #0 { +entry: + invoke void @may_throw(i32 1) + to label %invoke.cont unwind label %lpad + +invoke.cont: ; preds = %entry + invoke void @may_throw(i32 2) + to label %try.cont.9 unwind label %lpad.1 + +try.cont.9: ; preds = %invoke.cont.3, %invoke.cont, %catch.7 + ; FIXME: Something about our CFG breaks TailDuplication. This empy asm blocks + ; it so we can focus on testing the state numbering. + call void asm sideeffect "", "~{dirflag},~{fpsr},~{flags}"() + ret void + +lpad: ; preds = %catch, %entry + %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) + catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0 + %1 = extractvalue { i8*, i32 } %0, 0 + %2 = extractvalue { i8*, i32 } %0, 1 + br label %catch.dispatch.4 + +lpad.1: ; preds = %invoke.cont + %3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) + catch i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*) + %4 = extractvalue { i8*, i32 } %3, 0 + %5 = extractvalue { i8*, i32 } %3, 1 + %6 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*)) #3 + %matches = icmp eq i32 %5, %6 + br i1 %matches, label %catch, label %catch.dispatch.4 + +catch.dispatch.4: ; preds = %lpad.1, %lpad + %exn.slot.0 = phi i8* [ %4, %lpad.1 ], [ %1, %lpad ] + %ehselector.slot.0 = phi i32 [ %5, %lpad.1 ], [ %2, %lpad ] + %.pre = tail call i32 @llvm.eh.typeid.for(i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*)) #3 + %matches6 = icmp eq i32 %ehselector.slot.0, %.pre + br i1 %matches6, label %catch.7, label %eh.resume + +catch.7: ; preds = %catch.dispatch.4 + tail call void @llvm.eh.begincatch(i8* %exn.slot.0, i8* null) #3 + tail call void @may_throw(i32 4) + tail call void @llvm.eh.endcatch() #3 + br label %try.cont.9 + +catch: ; preds = %lpad.1 + tail call void @llvm.eh.begincatch(i8* %4, i8* null) #3 + invoke void @may_throw(i32 3) + to label %invoke.cont.3 unwind label %lpad + +invoke.cont.3: ; preds = %catch + tail call void @llvm.eh.endcatch() #3 + br label %try.cont.9 + +eh.resume: ; preds = %catch.dispatch.4 + %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.0, 0 + %lpad.val.12 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.0, 1 + resume { i8*, i32 } %lpad.val.12 +} + +; CHECK-LABEL: _f: +; CHECK: movl $-1, [[state:[-0-9]+]](%ebp) +; CHECK: movl $___ehhandler$f, {{.*}} +; +; CHECK: movl $0, [[state]](%ebp) +; CHECK: movl $1, (%esp) +; CHECK: calll _may_throw +; +; CHECK: movl $1, [[state]](%ebp) +; CHECK: movl $2, (%esp) +; CHECK: calll _may_throw + +; CHECK-LABEL: _f.catch: +; CHECK: movl $4, Lf$frame_escape_{{[0-9]+.*}} +; CHECK: movl $4, (%esp) +; CHECK: calll _may_throw + +; CHECK-LABEL: _f.catch.1: +; CHECK: movl $3, Lf$frame_escape_{{[0-9]+.*}} +; CHECK: movl $3, (%esp) +; CHECK: calll _may_throw |
