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https://github.com/RPCS3/llvm-mirror.git
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694a466675
We don't need to represent UnwindHelp in IR. Instead, we can use the knowledge that we are emitting the parent function to decide if we should create the UnwindHelp stack object. llvm-svn: 234061
241 lines
11 KiB
LLVM
241 lines
11 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
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; This test was generated from the following source:
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;
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; void test() {
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; try {
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; SomeClass obj;
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; may_throw();
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; try {
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; may_throw();
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; } catch (int) {
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; handle_exception();
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; }
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; } catch (int) {
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; handle_exception();
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; }
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; }
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;
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; The code above was compiled with the -O2 option.
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; ModuleID = 'catch-unwind.cpp'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
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%class.SomeClass = type { i8 }
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$"\01??_R0H@8" = comdat any
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@"\01??_7type_info@@6B@" = external constant i8*
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@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
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; CHECK-LABEL: define void @"\01?test@@YAXXZ"() #0 {
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; CHECK: entry:
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; CHECK: [[OBJ_PTR:\%.+]] = alloca %class.SomeClass
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; CHECK: [[TMP0:\%.+]] = alloca i32, align 4
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; CHECK: [[TMP1:\%.+]] = alloca i32, align 4
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; CHECK: call void (...)* @llvm.frameescape(i32* [[TMP1]], %class.SomeClass* [[OBJ_PTR]], i32* [[TMP0]])
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; CHECK: %call = invoke %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* %obj)
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; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]]
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; Function Attrs: uwtable
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define void @"\01?test@@YAXXZ"() #0 {
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entry:
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%obj = alloca %class.SomeClass, align 1
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%0 = alloca i32, align 4
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%1 = alloca i32, align 4
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%call = invoke %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* %obj)
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to label %invoke.cont unwind label %lpad
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; CHECK: invoke.cont:
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; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
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; CHECK: to label %invoke.cont2 unwind label %[[LPAD1_LABEL:lpad[0-9]+]]
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invoke.cont: ; preds = %entry
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invoke void @"\01?may_throw@@YAXXZ"()
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to label %invoke.cont2 unwind label %lpad1
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; CHECK: invoke.cont2:
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; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
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; CHECK: to label %try.cont unwind label %[[LPAD3_LABEL:lpad[0-9]+]]
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invoke.cont2: ; preds = %invoke.cont
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invoke void @"\01?may_throw@@YAXXZ"()
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to label %try.cont unwind label %lpad3
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; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
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; CHECK: [[LPAD_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch")
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; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %try.cont15]
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lpad: ; preds = %entry
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%2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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%3 = extractvalue { i8*, i32 } %2, 0
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%4 = extractvalue { i8*, i32 } %2, 1
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br label %catch.dispatch7
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; CHECK: [[LPAD1_LABEL]]:{{[ ]+}}; preds = %invoke.cont
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; CHECK: [[LPAD1_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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; CHECK-NEXT: [[RECOVER1:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 0, void (i8*, i8*)* @"\01?test@@YAXXZ.cleanup", i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch")
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; CHECK-NEXT: indirectbr i8* [[RECOVER1]], [label %try.cont15]
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lpad1: ; preds = %invoke.cont
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%5 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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cleanup
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catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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%6 = extractvalue { i8*, i32 } %5, 0
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%7 = extractvalue { i8*, i32 } %5, 1
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br label %ehcleanup
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; CHECK: [[LPAD3_LABEL]]:{{[ ]+}}; preds = %invoke.cont2
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; CHECK: [[LPAD3_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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; CHECK-NEXT: [[RECOVER3:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1", i32 0, void (i8*, i8*)* @"\01?test@@YAXXZ.cleanup")
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; CHECK-NEXT: indirectbr i8* [[RECOVER3]], [label %try.cont]
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lpad3: ; preds = %invoke.cont2
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%8 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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cleanup
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catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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%9 = extractvalue { i8*, i32 } %8, 0
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%10 = extractvalue { i8*, i32 } %8, 1
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%11 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
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%matches = icmp eq i32 %10, %11
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br i1 %matches, label %catch, label %ehcleanup
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; CHECK-NOT: catch:
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catch: ; preds = %lpad3
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%12 = bitcast i32* %0 to i8*
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call void @llvm.eh.begincatch(i8* %9, i8* %12) #3
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invoke void @"\01?handle_exception@@YAXXZ"()
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to label %invoke.cont6 unwind label %lpad5
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; CHECK-NOT: invoke.cont6:
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invoke.cont6: ; preds = %catch
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call void @llvm.eh.endcatch() #3
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br label %try.cont
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try.cont: ; preds = %invoke.cont2, %invoke.cont6
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call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* %obj) #3
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br label %try.cont15
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; CHECK-NOT: lpad5:
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lpad5: ; preds = %catch
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%13 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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cleanup
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catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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%14 = extractvalue { i8*, i32 } %13, 0
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%15 = extractvalue { i8*, i32 } %13, 1
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call void @llvm.eh.endcatch() #3
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br label %ehcleanup
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; CHECK-NOT: ehcleanup
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ehcleanup: ; preds = %lpad5, %lpad3, %lpad1
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%exn.slot.0 = phi i8* [ %14, %lpad5 ], [ %9, %lpad3 ], [ %6, %lpad1 ]
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%ehselector.slot.0 = phi i32 [ %15, %lpad5 ], [ %10, %lpad3 ], [ %7, %lpad1 ]
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call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* %obj) #3
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br label %catch.dispatch7
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; CHECK-NOT: catch.dispatch7:
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catch.dispatch7: ; preds = %ehcleanup, %lpad
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%exn.slot.1 = phi i8* [ %exn.slot.0, %ehcleanup ], [ %3, %lpad ]
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%ehselector.slot.1 = phi i32 [ %ehselector.slot.0, %ehcleanup ], [ %4, %lpad ]
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%16 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
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%matches9 = icmp eq i32 %ehselector.slot.1, %16
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br i1 %matches9, label %catch10, label %eh.resume
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; CHECK-NOT: catch10:
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catch10: ; preds = %catch.dispatch7
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%17 = bitcast i32* %1 to i8*
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call void @llvm.eh.begincatch(i8* %exn.slot.1, i8* %17) #3
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call void @"\01?handle_exception@@YAXXZ"()
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br label %invoke.cont13
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; CHECK-NOT: invoke.cont13:
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invoke.cont13: ; preds = %catch10
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call void @llvm.eh.endcatch() #3
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br label %try.cont15
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try.cont15: ; preds = %invoke.cont13, %try.cont
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ret void
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; CHECK-NOT: eh.resume
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eh.resume: ; preds = %catch.dispatch7
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.1, 0
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%lpad.val18 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.1, 1
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resume { i8*, i32 } %lpad.val18
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; CHECK: }
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}
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; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_TMP1:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
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; CHECK: [[TMP1_PTR:\%.+]] = bitcast i8* [[RECOVER_TMP1]] to i32*
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; CHECK: call void @"\01?handle_exception@@YAXXZ"()
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; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont15)
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; CHECK: }
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; CHECK-LABEL: define internal void @"\01?test@@YAXXZ.cleanup"(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_OBJ:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1)
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; CHECK: [[OBJ_PTR:\%.+]] = bitcast i8* %obj.i8 to %class.SomeClass*
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; CHECK: call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* [[OBJ_PTR]])
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; CHECK: ret void
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; CHECK: }
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; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch1"(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_TMP0:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2)
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; CHECK: [[TMP0_PTR:\%.+]] = bitcast i8* [[RECOVER_TMP0]] to i32*
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; CHECK: invoke void @"\01?handle_exception@@YAXXZ"()
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; CHECK: to label %invoke.cont6 unwind label %[[LPAD5_LABEL:lpad[0-9]+]]
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;
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; CHECK: invoke.cont6: ; preds = %entry
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; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont)
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;
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; CHECK: [[LPAD5_LABEL]]:{{[ ]+}}; preds = %entry
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; CHECK: [[LPAD5_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK: cleanup
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; CHECK: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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; CHECK: }
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declare %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* returned) #1
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declare i32 @__CxxFrameHandler3(...)
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declare void @"\01?may_throw@@YAXXZ"() #1
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; Function Attrs: nounwind readnone
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declare i32 @llvm.eh.typeid.for(i8*) #2
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; Function Attrs: nounwind
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declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3
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declare void @"\01?handle_exception@@YAXXZ"() #1
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; Function Attrs: nounwind
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declare void @llvm.eh.endcatch() #3
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; Function Attrs: nounwind
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declare void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass*) #4
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attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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attributes #4 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"PIC Level", i32 2}
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!1 = !{!"clang version 3.7.0 (trunk 232069) (llvm/trunk 232070)"}
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