| ; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s |
| |
| ; This test was generated from the following code. |
| ; |
| ; void test1() { |
| ; try { |
| ; try { |
| ; throw 1; |
| ; } catch(...) { throw; } |
| ; } catch (...) { } |
| ; } |
| ; void test2() { |
| ; try { |
| ; throw 1; |
| ; } catch(...) { |
| ; try { |
| ; throw; |
| ; } catch (...) {} |
| ; } |
| ; } |
| ; |
| ; These two functions result in functionally equivalent code, but the last |
| ; catch block contains a call to llvm.eh.endcatch that tripped up processing |
| ; during development. |
| ; |
| ; The main purpose of this test is to verify that we can correctly |
| ; handle the case of nested landing pads that return directly to a block in |
| ; the parent function. |
| |
| ; ModuleID = 'cppeh-nested-rethrow.cpp' |
| target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-windows-msvc" |
| |
| %rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] } |
| %eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 } |
| %eh.CatchableTypeArray.1 = type { i32, [1 x i32] } |
| %eh.ThrowInfo = type { i32, i32, i32, i32 } |
| |
| $"\01??_R0H@8" = comdat any |
| |
| $"_CT??_R0H@84" = comdat any |
| |
| $_CTA1H = comdat any |
| |
| $_TI1H = 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 |
| @__ImageBase = external constant i8 |
| @"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat |
| @_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat |
| @_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat |
| |
| ; CHECK-LABEL: define void @"\01?test1@@YAXXZ"() |
| ; CHECK: entry: |
| ; CHECK: call void (...) @llvm.localescape |
| |
| ; Function Attrs: nounwind uwtable |
| define void @"\01?test1@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| entry: |
| %tmp = alloca i32, align 4 |
| %exn.slot = alloca i8* |
| %ehselector.slot = alloca i32 |
| store i32 1, i32* %tmp |
| %0 = bitcast i32* %tmp to i8* |
| invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #2 |
| to label %unreachable unwind label %lpad |
| |
| lpad: ; preds = %entry |
| %1 = landingpad { i8*, i32 } |
| catch i8* null |
| %2 = extractvalue { i8*, i32 } %1, 0 |
| store i8* %2, i8** %exn.slot |
| %3 = extractvalue { i8*, i32 } %1, 1 |
| store i32 %3, i32* %ehselector.slot |
| br label %catch |
| |
| catch: ; preds = %lpad |
| %exn = load i8*, i8** %exn.slot |
| call void @llvm.eh.begincatch(i8* %exn, i8* null) #1 |
| invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #2 |
| to label %unreachable unwind label %lpad1 |
| |
| lpad1: ; preds = %catch |
| %4 = landingpad { i8*, i32 } |
| catch i8* null |
| %5 = extractvalue { i8*, i32 } %4, 0 |
| store i8* %5, i8** %exn.slot |
| %6 = extractvalue { i8*, i32 } %4, 1 |
| store i32 %6, i32* %ehselector.slot |
| br label %catch2 |
| |
| catch2: ; preds = %lpad1 |
| %exn3 = load i8*, i8** %exn.slot |
| call void @llvm.eh.begincatch(i8* %exn3, i8* null) #1 |
| call void @llvm.eh.endcatch() #1 |
| br label %try.cont.4 |
| |
| ; This block should not be eliminated. |
| ; CHECK: try.cont.4: |
| try.cont.4: ; preds = %catch2, %try.cont |
| ret void |
| |
| try.cont: ; No predecessors! |
| br label %try.cont.4 |
| |
| unreachable: ; preds = %catch, %entry |
| unreachable |
| ; CHECK: } |
| } |
| |
| declare void @_CxxThrowException(i8*, %eh.ThrowInfo*) |
| |
| declare i32 @__CxxFrameHandler3(...) |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #1 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.eh.endcatch() #1 |
| |
| ; CHECK-LABEL: define void @"\01?test2@@YAXXZ"() |
| ; CHECK: entry: |
| ; CHECK: call void (...) @llvm.localescape |
| |
| ; Function Attrs: nounwind uwtable |
| define void @"\01?test2@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) { |
| entry: |
| %tmp = alloca i32, align 4 |
| %exn.slot = alloca i8* |
| %ehselector.slot = alloca i32 |
| store i32 1, i32* %tmp |
| %0 = bitcast i32* %tmp to i8* |
| invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #2 |
| to label %unreachable unwind label %lpad |
| |
| lpad: ; preds = %entry |
| %1 = landingpad { i8*, i32 } |
| catch i8* null |
| %2 = extractvalue { i8*, i32 } %1, 0 |
| store i8* %2, i8** %exn.slot |
| %3 = extractvalue { i8*, i32 } %1, 1 |
| store i32 %3, i32* %ehselector.slot |
| br label %catch |
| |
| catch: ; preds = %lpad |
| %exn = load i8*, i8** %exn.slot |
| call void @llvm.eh.begincatch(i8* %exn, i8* null) #1 |
| invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #2 |
| to label %unreachable unwind label %lpad1 |
| |
| lpad1: ; preds = %catch |
| %4 = landingpad { i8*, i32 } |
| catch i8* null |
| %5 = extractvalue { i8*, i32 } %4, 0 |
| store i8* %5, i8** %exn.slot |
| %6 = extractvalue { i8*, i32 } %4, 1 |
| store i32 %6, i32* %ehselector.slot |
| br label %catch2 |
| |
| catch2: ; preds = %lpad1 |
| %exn3 = load i8*, i8** %exn.slot |
| call void @llvm.eh.begincatch(i8* %exn3, i8* null) #1 |
| call void @llvm.eh.endcatch() #1 |
| br label %try.cont |
| |
| ; This block should not be eliminated. |
| ; CHECK: try.cont: |
| ; The endcatch call should be eliminated. |
| ; CHECK-NOT: call void @llvm.eh.endcatch() |
| try.cont: ; preds = %catch2 |
| call void @llvm.eh.endcatch() #1 |
| br label %try.cont.4 |
| |
| try.cont.4: ; preds = %try.cont |
| ret void |
| |
| unreachable: ; preds = %catch, %entry |
| unreachable |
| ; CHECK: } |
| } |
| |
| ; The outlined test1.catch handler should return to a valid block address. |
| ; CHECK-LABEL: define internal i8* @"\01?test1@@YAXXZ.catch"(i8*, i8*) |
| ; CHECK-NOT: ret i8* inttoptr (i32 1 to i8*) |
| ; CHECK: } |
| |
| ; The outlined test1.catch1 handler should not contain a return instruction. |
| ; CHECK-LABEL: define internal i8* @"\01?test1@@YAXXZ.catch.1"(i8*, i8*) |
| ; CHECK-NOT: ret |
| ; CHECK: } |
| |
| ; The outlined test2.catch handler should return to a valid block address. |
| ; CHECK-LABEL: define internal i8* @"\01?test2@@YAXXZ.catch"(i8*, i8*) |
| ; CHECK-NOT: ret i8* inttoptr (i32 1 to i8*) |
| ; CHECK: } |
| |
| ; The outlined test2.catch2 handler should not contain a return instruction. |
| ; CHECK-LABEL: define internal i8* @"\01?test2@@YAXXZ.catch.2"(i8*, i8*) |
| ; CHECK-NOT: ret |
| ; CHECK: } |
| |
| |
| attributes #0 = { nounwind 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" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nounwind } |
| attributes #2 = { noreturn } |
| |
| !llvm.module.flags = !{!0} |
| !llvm.ident = !{!1} |
| |
| !0 = !{i32 1, !"PIC Level", i32 2} |
| !1 = !{!"clang version 3.7.0 (trunk 236059)"} |
