Extended support for native Windows C++ EH outlining
Differential Review: http://reviews.llvm.org/D7886
llvm-svn: 231981
diff --git a/llvm/test/CodeGen/WinEH/cppeh-nested-2.ll b/llvm/test/CodeGen/WinEH/cppeh-nested-2.ll
new file mode 100644
index 0000000..97dbea5
--- /dev/null
+++ b/llvm/test/CodeGen/WinEH/cppeh-nested-2.ll
@@ -0,0 +1,321 @@
+; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
+
+; This test is based on the following code:
+;
+; class Inner {
+; public:
+; Inner();
+; ~Inner();
+; };
+; class Outer {
+; public:
+; Outer();
+; ~Outer();
+; };
+; void test() {
+; try {
+; Outer outer;
+; try {
+; Inner inner;
+; may_throw();
+; } catch (int i) {
+; handle_int(i);
+; }
+; } catch (float f) {
+; handle_float(f);
+; }
+; done();
+; }
+
+; ModuleID = 'nested-2.cpp'
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+%class.Outer = type { i8 }
+%class.Inner = type { i8 }
+
+@_ZTIf = external constant i8*
+@_ZTIi = external constant i8*
+
+; The function entry should be rewritten like this.
+; CHECK: define void @_Z4testv() #0 {
+; CHECK: entry:
+; CHECK: %outer = alloca %class.Outer, align 1
+; CHECK: %inner = alloca %class.Inner, align 1
+; CHECK: %i = alloca i32, align 4
+; CHECK: %f = alloca float, align 4
+; CHECK: call void (...)* @llvm.frameescape(float* %f, i32* %i, %class.Outer* %outer, %class.Inner* %inner)
+; CHECK: invoke void @_ZN5OuterC1Ev(%class.Outer* %outer)
+; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]]
+
+; Function Attrs: uwtable
+define void @_Z4testv() #0 {
+entry:
+ %outer = alloca %class.Outer, align 1
+ %exn.slot = alloca i8*
+ %ehselector.slot = alloca i32
+ %inner = alloca %class.Inner, align 1
+ %i = alloca i32, align 4
+ %f = alloca float, align 4
+ invoke void @_ZN5OuterC1Ev(%class.Outer* %outer)
+ to label %invoke.cont unwind label %lpad
+
+; CHECK: invoke.cont:
+; CHECK: invoke void @_ZN5InnerC1Ev(%class.Inner* %inner)
+; CHECK: to label %invoke.cont2 unwind label %[[LPAD1_LABEL:lpad[0-9]*]]
+
+invoke.cont: ; preds = %entry
+ invoke void @_ZN5InnerC1Ev(%class.Inner* %inner)
+ to label %invoke.cont2 unwind label %lpad1
+
+; CHECK: invoke.cont2:
+; CHECK: invoke void @_Z9may_throwv()
+; CHECK: to label %invoke.cont4 unwind label %[[LPAD3_LABEL:lpad[0-9]*]]
+
+invoke.cont2: ; preds = %invoke.cont
+ invoke void @_Z9may_throwv()
+ to label %invoke.cont4 unwind label %lpad3
+
+; CHECK: invoke.cont4:
+; CHECK: invoke void @_ZN5InnerD1Ev(%class.Inner* %inner)
+; CHECK: to label %invoke.cont5 unwind label %[[LPAD1_LABEL]]
+
+invoke.cont4: ; preds = %invoke.cont2
+ invoke void @_ZN5InnerD1Ev(%class.Inner* %inner)
+ to label %invoke.cont5 unwind label %lpad1
+
+; CHECK: invoke.cont5:
+; CHECK: br label %try.cont
+
+invoke.cont5: ; preds = %invoke.cont4
+ br label %try.cont
+
+; CHECK: [[LPAD_LABEL]]:
+; CHECK: [[LPAD_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK: catch i8* bitcast (i8** @_ZTIf to i8*)
+; CHECK: [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions({ i8*, i32 } [[LPAD_VAL]], i32 0, i8* bitcast (i8** @_ZTIf to i8*), float* %f, i8* bitcast (i8* (i8*, i8*)* @_Z4testv.catch to i8*))
+; CHECK: indirectbr i8* [[RECOVER]], [label %try.cont19]
+
+lpad: ; preds = %try.cont, %entry
+ %tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+ catch i8* bitcast (i8** @_ZTIf 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.dispatch11
+
+; CHECK: [[LPAD1_LABEL]]:
+; CHECK: [[LPAD1_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK: cleanup
+; CHECK: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK: catch i8* bitcast (i8** @_ZTIf to i8*)
+; CHECK: [[RECOVER1:\%.+]] = call i8* (...)* @llvm.eh.actions({ i8*, i32 } [[LPAD1_VAL]], i32 0, i8* bitcast (i8** @_ZTIi to i8*), i32* %i, i8* bitcast (i8* (i8*, i8*)* @_Z4testv.catch1 to i8*), i32 1, i8* bitcast (void (i8*, i8*)* @_Z4testv.cleanup to i8*), i32 0, i8* bitcast (i8** @_ZTIf to i8*), float* %f, i8* bitcast (i8* (i8*, i8*)* @_Z4testv.catch to i8*))
+; CHECK: indirectbr i8* [[RECOVER1]], [label %try.cont, label %try.cont19]
+
+lpad1: ; preds = %invoke.cont4, %invoke.cont
+ %tmp3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+ cleanup
+ catch i8* bitcast (i8** @_ZTIi to i8*)
+ catch i8* bitcast (i8** @_ZTIf to i8*)
+ %tmp4 = extractvalue { i8*, i32 } %tmp3, 0
+ store i8* %tmp4, i8** %exn.slot
+ %tmp5 = extractvalue { i8*, i32 } %tmp3, 1
+ store i32 %tmp5, i32* %ehselector.slot
+ br label %catch.dispatch
+
+; CHECK: [[LPAD3_LABEL]]:
+; CHECK: [[LPAD3_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK: cleanup
+; CHECK: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK: catch i8* bitcast (i8** @_ZTIf to i8*)
+; CHECK-NOT: extractvalue { i8*, i32 }
+; CHECK-NOT: store i8*
+; CHECK-NOT: store i32
+; CHECK-NOT: call void @_ZN5InnerD1Ev(%class.Inner* %inner)
+; CHECK: [[RECOVER3:\%.+]] = call i8* (...)* @llvm.eh.actions({ i8*, i32 } [[LPAD3_VAL]], i32 1, i8* bitcast (void (i8*, i8*)* @_Z4testv.cleanup2 to i8*), i32 0, i8* bitcast (i8** @_ZTIi to i8*), i32* %i, i8* bitcast (i8* (i8*, i8*)* @_Z4testv.catch1 to i8*), i32 1, i8* bitcast (void (i8*, i8*)* @_Z4testv.cleanup to i8*), i32 0, i8* bitcast (i8** @_ZTIf to i8*), float* %f, i8* bitcast (i8* (i8*, i8*)* @_Z4testv.catch to i8*))
+; CHECK: indirectbr i8* [[RECOVER3]], [label %try.cont, label %try.cont19]
+
+lpad3: ; preds = %invoke.cont2
+ %tmp6 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+ cleanup
+ catch i8* bitcast (i8** @_ZTIi to i8*)
+ catch i8* bitcast (i8** @_ZTIf to i8*)
+ %tmp7 = extractvalue { i8*, i32 } %tmp6, 0
+ store i8* %tmp7, i8** %exn.slot
+ %tmp8 = extractvalue { i8*, i32 } %tmp6, 1
+ store i32 %tmp8, i32* %ehselector.slot
+ call void @_ZN5InnerD1Ev(%class.Inner* %inner)
+ br label %catch.dispatch
+
+; CHECK-NOT: catch.dispatch:
+
+catch.dispatch: ; preds = %lpad3, %lpad1
+ %sel = load i32, i32* %ehselector.slot
+ %tmp9 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) #4
+ %matches = icmp eq i32 %sel, %tmp9
+ br i1 %matches, label %catch, label %ehcleanup
+
+; CHECK-NOT: catch:
+
+catch: ; preds = %catch.dispatch
+ %exn = load i8*, i8** %exn.slot
+ %i.i8 = bitcast i32* %i to i8*
+ call void @llvm.eh.begincatch(i8* %exn, i8* %i.i8) #4
+ %tmp13 = load i32, i32* %i, align 4
+ invoke void @_Z10handle_inti(i32 %tmp13)
+ to label %invoke.cont8 unwind label %lpad7
+
+; CHECK-NOT: invoke.cont8:
+
+invoke.cont8: ; preds = %catch
+ call void @llvm.eh.endcatch() #4
+ br label %try.cont
+
+; CHECK: try.cont:
+; CHECK: invoke void @_ZN5OuterD1Ev(%class.Outer* %outer)
+; CHECK: to label %invoke.cont9 unwind label %[[LPAD_LABEL]]
+
+try.cont: ; preds = %invoke.cont8, %invoke.cont5
+ invoke void @_ZN5OuterD1Ev(%class.Outer* %outer)
+ to label %invoke.cont9 unwind label %lpad
+
+invoke.cont9: ; preds = %try.cont
+ br label %try.cont19
+
+; CHECK-NOT: lpad7:
+
+lpad7: ; preds = %catch
+ %tmp14 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+ cleanup
+ catch i8* bitcast (i8** @_ZTIf to i8*)
+ %tmp15 = extractvalue { i8*, i32 } %tmp14, 0
+ store i8* %tmp15, i8** %exn.slot
+ %tmp16 = extractvalue { i8*, i32 } %tmp14, 1
+ store i32 %tmp16, i32* %ehselector.slot
+ call void @llvm.eh.endcatch() #4
+ br label %ehcleanup
+
+; CHECK-NOT: ehcleanup: ; preds = %lpad7, %catch.dispatch
+
+ehcleanup: ; preds = %lpad7, %catch.dispatch
+ call void @_ZN5OuterD1Ev(%class.Outer* %outer)
+ br label %catch.dispatch11
+
+; CHECK-NOT: catch.dispatch11:
+
+catch.dispatch11: ; preds = %ehcleanup, %lpad
+ %sel12 = load i32, i32* %ehselector.slot
+ %tmp17 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIf to i8*)) #4
+ %matches13 = icmp eq i32 %sel12, %tmp17
+ br i1 %matches13, label %catch14, label %eh.resume
+
+; CHECK-NOT: catch14:
+
+catch14: ; preds = %catch.dispatch11
+ %exn15 = load i8*, i8** %exn.slot
+ %f.i8 = bitcast float* %f to i8*
+ call void @llvm.eh.begincatch(i8* %exn15, i8* %f.i8) #4
+ %tmp21 = load float, float* %f, align 4
+ call void @_Z12handle_floatf(float %tmp21)
+ call void @llvm.eh.endcatch() #4
+ br label %try.cont19
+
+try.cont19: ; preds = %catch14, %invoke.cont9
+ call void @_Z4donev()
+ ret void
+
+; CHECK-NOT: eh.resume:
+
+eh.resume: ; preds = %catch.dispatch11
+ %exn20 = load i8*, i8** %exn.slot
+ %sel21 = load i32, i32* %ehselector.slot
+ %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn20, 0
+ %lpad.val22 = insertvalue { i8*, i32 } %lpad.val, i32 %sel21, 1
+ resume { i8*, i32 } %lpad.val22
+
+; CHECK: }
+}
+
+; This catch handler should be outlined.
+; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*) {
+; CHECK: entry:
+; CHECK: [[RECOVER_F:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0)
+; CHECK: [[F_PTR:\%.+]] = bitcast i8* [[RECOVER_F]] to float*
+; CHECK: [[TMP:\%.+]] = load float, float* [[F_PTR]], align 4
+; CHECK: call void @_Z12handle_floatf(float [[TMP]])
+; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont19)
+; CHECK: }
+
+; This catch handler should be outlined.
+; CHECK: define internal i8* @_Z4testv.catch1(i8*, i8*) {
+; CHECK: entry:
+; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 1)
+; CHECK: [[I_PTR:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
+; CHECK: [[TMP1:\%.+]] = load i32, i32* [[I_PTR]], align 4
+; CHECK: invoke void @_Z10handle_inti(i32 [[TMP1]])
+; CHECK: to label %invoke.cont8 unwind label %[[LPAD7_LABEL:lpad[0-9]*]]
+;
+; CHECK: invoke.cont8: ; preds = %entry
+; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont)
+;
+; CHECK: [[LPAD7_LABEL]]:{{[ ]+}}; preds = %entry
+; CHECK: [[LPAD7_VAL:\%.+]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; (FIXME) The nested handler body isn't being populated yet.
+; CHECK: }
+
+; This cleanup handler should be outlined.
+; CHECK: define internal void @_Z4testv.cleanup(i8*, i8*) {
+; CHECK: entry:
+; CHECK: [[RECOVER_OUTER:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 2)
+; CHECK: [[OUTER_PTR:\%.+]] = bitcast i8* [[RECOVER_OUTER]] to %class.Outer*
+; CHECK: call void @_ZN5OuterD1Ev(%class.Outer* [[OUTER_PTR]])
+; CHECK: ret void
+; CHECK: }
+
+; This cleanup handler should be outlined.
+; CHECK: define internal void @_Z4testv.cleanup2(i8*, i8*) {
+; CHECK: entry:
+; CHECK: [[RECOVER_INNER:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 3)
+; CHECK: [[INNER_PTR:\%.+]] = bitcast i8* [[RECOVER_INNER]] to %class.Inner*
+; CHECK: call void @_ZN5InnerD1Ev(%class.Inner* [[INNER_PTR]])
+; CHECK: ret void
+; CHECK: }
+
+
+
+declare void @_ZN5OuterC1Ev(%class.Outer*) #1
+
+declare i32 @__CxxFrameHandler3(...)
+
+declare void @_ZN5InnerC1Ev(%class.Inner*) #1
+
+declare void @_Z9may_throwv() #1
+
+declare void @_ZN5InnerD1Ev(%class.Inner*) #1
+
+declare void @llvm.eh.begincatch(i8*, i8*)
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.eh.typeid.for(i8*) #3
+
+declare void @_Z10handle_inti(i32) #1
+
+declare void @llvm.eh.endcatch()
+
+declare void @_ZN5OuterD1Ev(%class.Outer*) #1
+
+declare void @_Z12handle_floatf(float) #1
+
+declare void @_Z4donev() #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 = { noinline noreturn nounwind }
+attributes #3 = { nounwind readnone }
+attributes #4 = { nounwind }
+attributes #5 = { noreturn nounwind }
+
+!llvm.ident = !{!0}
+
+!0 = !{!"clang version 3.7.0 (trunk 226027)"}