| ; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s |
| |
| ; This test is based on the following code: |
| ; |
| ; void test() |
| ; { |
| ; try { |
| ; may_throw(); |
| ; } catch (int i) { |
| ; handle_int(i); |
| ; } |
| ; } |
| ; |
| ; Parts of the IR have been hand-edited to simplify the test case. |
| ; The full IR will be restored when Windows C++ EH support is complete. |
| |
| ;ModuleID = 'cppeh-catch-scalar.cpp' |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-windows-msvc" |
| |
| @_ZTIi = external constant i8* |
| |
| ; The function entry will be rewritten like this. |
| ; CHECK: define void @_Z4testv() |
| ; CHECK: entry: |
| ; CHECK: [[I_PTR:\%.+]] = alloca i32, align 4 |
| ; CHECK: call void (...) @llvm.frameescape(i32* [[I_PTR]]) |
| ; CHECK: invoke void @_Z9may_throwv() |
| ; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]] |
| |
| ; Function Attrs: uwtable |
| define void @_Z4testv() #0 { |
| entry: |
| %exn.slot = alloca i8* |
| %ehselector.slot = alloca i32 |
| %i = alloca i32, align 4 |
| invoke void @_Z9may_throwv() |
| to label %invoke.cont unwind label %lpad |
| |
| invoke.cont: ; preds = %entry |
| br label %try.cont |
| |
| ; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry |
| ; CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) |
| ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*) |
| ; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (i8** @_ZTIi to i8*), i32 0, i8* (i8*, i8*)* @_Z4testv.catch) |
| ; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %try.cont] |
| |
| lpad: ; preds = %entry |
| %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) |
| catch i8* bitcast (i8** @_ZTIi to i8*) |
| %tmp1 = extractvalue { i8*, i32 } %tmp, 0 |
| store i8* %tmp1, i8** %exn.slot |
| %tmp2 = extractvalue { i8*, i32 } %tmp, 1 |
| store i32 %tmp2, i32* %ehselector.slot |
| br label %catch.dispatch |
| |
| ; CHECK-NOT: catch-dispatch: |
| |
| catch.dispatch: ; preds = %lpad |
| %sel = load i32, i32* %ehselector.slot |
| %tmp3 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #3 |
| %matches = icmp eq i32 %sel, %tmp3 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| ; CHECK-NOT: catch: |
| |
| catch: ; preds = %catch.dispatch |
| %exn11 = load i8*, i8** %exn.slot |
| %i.i8 = bitcast i32* %i to i8* |
| call void @llvm.eh.begincatch(i8* %exn11, i8* %i.i8) #3 |
| %tmp7 = load i32, i32* %i, align 4 |
| call void @_Z10handle_inti(i32 %tmp7) |
| br label %invoke.cont2 |
| |
| ; CHECK-NOT: invoke.cont2: |
| |
| invoke.cont2: ; preds = %catch |
| call void @llvm.eh.endcatch() #3 |
| br label %try.cont |
| |
| try.cont: ; preds = %invoke.cont2, %invoke.cont |
| ret void |
| |
| ; CHECK-NOT: eh.resume: |
| |
| eh.resume: ; preds = %catch.dispatch |
| %exn3 = load i8*, i8** %exn.slot |
| %sel4 = load i32, i32* %ehselector.slot |
| %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn3, 0 |
| %lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %sel4, 1 |
| resume { i8*, i32 } %lpad.val5 |
| |
| ; CHECK: } |
| } |
| |
| ; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*) |
| ; CHECK: entry: |
| ; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0) |
| ; CHECK: [[I_PTR1:\%.+]] = bitcast i8* [[RECOVER_I]] to i32* |
| ; CHECK: [[TMP:\%.+]] = load i32, i32* [[I_PTR1]], align 4 |
| ; CHECK: call void @_Z10handle_inti(i32 [[TMP]]) |
| ; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont) |
| ; CHECK: } |
| |
| declare void @_Z9may_throwv() #1 |
| |
| declare i32 @__CxxFrameHandler3(...) |
| |
| ; Function Attrs: nounwind readnone |
| declare i32 @llvm.eh.typeid.for(i8*) #2 |
| |
| declare void @llvm.eh.begincatch(i8*, i8*) |
| |
| declare void @llvm.eh.endcatch() |
| |
| declare void @_Z10handle_inti(i32) #1 |
| |
| attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #2 = { nounwind readnone } |
| attributes #3 = { nounwind } |
| |
| !llvm.ident = !{!0} |
| |
| !0 = !{!"clang version 3.7.0 (trunk 227474) (llvm/trunk 227508)"} |