; by appending selectors and forwarding _Unwind_Resume directly to the
; enclosing landing pad.
+;; Test 0 - basic functionality.
+
%struct.A = type { i8 }
@_ZTIi = external constant i8*
declare void @_ZN1AD1Ev(%struct.A*)
-declare i8* @llvm.eh.exception() nounwind readonly
+declare void @use(i32) nounwind
-declare i32 @llvm.eh.selector(i8*, i8*, ...) nounwind
+declare void @opaque()
declare i32 @llvm.eh.typeid.for(i8*) nounwind
-declare void @_Unwind_Resume(i8*)
-
declare i32 @__gxx_personality_v0(...)
declare i8* @__cxa_begin_catch(i8*)
ret void
lpad:
- %exn = call i8* @llvm.eh.exception() nounwind
- %eh.selector = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 0) nounwind
+ %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
+ cleanup
invoke void @_ZN1AD1Ev(%struct.A* %a)
to label %invoke.cont2 unwind label %terminate.lpad
invoke.cont2:
- call void @_Unwind_Resume(i8* %exn) noreturn
- unreachable
+ resume { i8*, i32 } %exn
terminate.lpad:
- %exn3 = call i8* @llvm.eh.exception() nounwind
- %eh.selector4 = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn3, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* null) nounwind
+ %exn1 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
+ catch i8* null
call void @_ZSt9terminatev() noreturn nounwind
unreachable
}
ret void
lpad: ; preds = %entry
- %exn = call i8* @llvm.eh.exception() nounwind
- %eh.selector = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*)) nounwind
+ %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
+ catch i8* bitcast (i8** @_ZTIi to i8*)
+ %eh.exc = extractvalue { i8*, i32 } %exn, 0
+ %eh.selector = extractvalue { i8*, i32 } %exn, 1
%0 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind
%1 = icmp eq i32 %eh.selector, %0
br i1 %1, label %catch, label %eh.resume
catch:
- %ignored = call i8* @__cxa_begin_catch(i8* %exn) nounwind
+ %ignored = call i8* @__cxa_begin_catch(i8* %eh.exc) nounwind
call void @__cxa_end_catch() nounwind
br label %ret
eh.resume:
- call void @_Unwind_Resume(i8* %exn) noreturn
- unreachable
+ resume { i8*, i32 } %exn
}
-; CHECK: define void @test0_out()
-; CHECK: [[A:%.*]] = alloca %struct.A,
-; CHECK: [[B:%.*]] = alloca %struct.A,
-; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A]])
-; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B]])
-; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B]])
-; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A]])
-; CHECK: call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* {{%.*}}, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 0, i8* bitcast (i8** @_ZTIi to i8*))
+; CHECK: define void @test0_out()
+; CHECK: [[A:%.*]] = alloca %struct.A,
+; CHECK: [[B:%.*]] = alloca %struct.A,
+; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A]])
+; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B]])
+; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B]])
+; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A]])
+; CHECK: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
; CHECK-NEXT: invoke void @_ZN1AD1Ev(%struct.A* [[A]])
; CHECK-NEXT: to label %[[LBL:[^\s]+]] unwind
; CHECK: [[LBL]]:
; CHECK-NEXT: br label %[[LPAD:[^\s]+]]
+; CHECK: ret void
+; CHECK: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK-NEXT: br label %[[LPAD]]
; CHECK: [[LPAD]]:
-; CHECK-NEXT: call i8* @llvm.eh.exception()
-; CHECK-NEXT: call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* {{%.*}}, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*))
+; CHECK-NEXT: phi { i8*, i32 } [
+; CHECK-NEXT: extractvalue { i8*, i32 }
+; CHECK-NEXT: extractvalue { i8*, i32 }
+; CHECK-NEXT: call i32 @llvm.eh.typeid.for(
+
+
+;; Test 1 - Correctly handle phis in outer landing pads.
+
+define void @test1_out() uwtable ssp {
+entry:
+ invoke void @test0_in()
+ to label %cont unwind label %lpad
+
+cont:
+ invoke void @test0_in()
+ to label %ret unwind label %lpad
+
+ret:
+ ret void
+
+lpad:
+ %x = phi i32 [ 0, %entry ], [ 1, %cont ]
+ %y = phi i32 [ 1, %entry ], [ 4, %cont ]
+ %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
+ catch i8* bitcast (i8** @_ZTIi to i8*)
+ %eh.exc = extractvalue { i8*, i32 } %exn, 0
+ %eh.selector = extractvalue { i8*, i32 } %exn, 1
+ %0 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind
+ %1 = icmp eq i32 %eh.selector, %0
+ br i1 %1, label %catch, label %eh.resume
+
+catch:
+ %ignored = call i8* @__cxa_begin_catch(i8* %eh.exc) nounwind
+ call void @use(i32 %x)
+ call void @use(i32 %y)
+ call void @__cxa_end_catch() nounwind
+ br label %ret
+
+eh.resume:
+ resume { i8*, i32 } %exn
+}
+
+; CHECK: define void @test1_out()
+; CHECK: [[A2:%.*]] = alloca %struct.A,
+; CHECK: [[B2:%.*]] = alloca %struct.A,
+; CHECK: [[A1:%.*]] = alloca %struct.A,
+; CHECK: [[B1:%.*]] = alloca %struct.A,
+; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A1]])
+; CHECK-NEXT: unwind label %[[LPAD:[^\s]+]]
+; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B1]])
+; CHECK-NEXT: unwind label %[[LPAD1:[^\s]+]]
+; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B1]])
+; CHECK-NEXT: unwind label %[[LPAD1]]
+; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A1]])
+; CHECK-NEXT: unwind label %[[LPAD]]
+
+; Inner landing pad from first inlining.
+; CHECK: [[LPAD1]]:
+; CHECK-NEXT: [[LPADVAL1:%.*]] = landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK-NEXT: invoke void @_ZN1AD1Ev(%struct.A* [[A1]])
+; CHECK-NEXT: to label %[[RESUME1:[^\s]+]] unwind
+; CHECK: [[RESUME1]]:
+; CHECK-NEXT: br label %[[LPAD_JOIN1:[^\s]+]]
+
+; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A2]])
+; CHECK-NEXT: unwind label %[[LPAD]]
+; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B2]])
+; CHECK-NEXT: unwind label %[[LPAD2:[^\s]+]]
+; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B2]])
+; CHECK-NEXT: unwind label %[[LPAD2]]
+; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A2]])
+; CHECK-NEXT: unwind label %[[LPAD]]
+
+; Inner landing pad from second inlining.
+; CHECK: [[LPAD2]]:
+; CHECK-NEXT: [[LPADVAL2:%.*]] = landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK-NEXT: invoke void @_ZN1AD1Ev(%struct.A* [[A2]])
+; CHECK-NEXT: to label %[[RESUME2:[^\s]+]] unwind
+; CHECK: [[RESUME2]]:
+; CHECK-NEXT: br label %[[LPAD_JOIN2:[^\s]+]]
+
+; CHECK: ret void
+
+; CHECK: [[LPAD]]:
+; CHECK-NEXT: [[X:%.*]] = phi i32 [ 0, %entry ], [ 0, {{%.*}} ], [ 1, %cont ], [ 1, {{%.*}} ]
+; CHECK-NEXT: [[Y:%.*]] = phi i32 [ 1, %entry ], [ 1, {{%.*}} ], [ 4, %cont ], [ 4, {{%.*}} ]
+; CHECK-NEXT: [[LPADVAL:%.*]] = landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK-NEXT: br label %[[LPAD_JOIN2]]
+
+; CHECK: [[LPAD_JOIN2]]:
+; CHECK-NEXT: [[XJ2:%.*]] = phi i32 [ [[X]], %[[LPAD]] ], [ 1, %[[RESUME2]] ]
+; CHECK-NEXT: [[YJ2:%.*]] = phi i32 [ [[Y]], %[[LPAD]] ], [ 4, %[[RESUME2]] ]
+; CHECK-NEXT: [[EXNJ2:%.*]] = phi { i8*, i32 } [ [[LPADVAL]], %[[LPAD]] ], [ [[LPADVAL2]], %[[RESUME2]] ]
+; CHECK-NEXT: br label %[[LPAD_JOIN1]]
+
+; CHECK: [[LPAD_JOIN1]]:
+; CHECK-NEXT: [[XJ1:%.*]] = phi i32 [ [[XJ2]], %[[LPAD_JOIN2]] ], [ 0, %[[RESUME1]] ]
+; CHECK-NEXT: [[YJ1:%.*]] = phi i32 [ [[YJ2]], %[[LPAD_JOIN2]] ], [ 1, %[[RESUME1]] ]
+; CHECK-NEXT: [[EXNJ1:%.*]] = phi { i8*, i32 } [ [[EXNJ2]], %[[LPAD_JOIN2]] ], [ [[LPADVAL1]], %[[RESUME1]] ]
+; CHECK-NEXT: extractvalue { i8*, i32 } [[EXNJ1]], 0
+; CHECK-NEXT: [[SELJ1:%.*]] = extractvalue { i8*, i32 } [[EXNJ1]], 1
+; CHECK-NEXT: [[T:%.*]] = call i32 @llvm.eh.typeid.for(
+; CHECK-NEXT: icmp eq i32 [[SELJ1]], [[T]]
+
+; CHECK: call void @use(i32 [[XJ1]])
+; CHECK: call void @use(i32 [[YJ1]])
+
+; CHECK: resume { i8*, i32 }
+
+
+;; Test 2 - Don't make invalid IR for inlines into landing pads without eh.exception calls
+define void @test2_out() uwtable ssp {
+entry:
+ invoke void @test0_in()
+ to label %ret unwind label %lpad
+
+ret:
+ ret void
+
+lpad:
+ %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
+ cleanup
+ call void @_ZSt9terminatev()
+ unreachable
+}
+
+; CHECK: define void @test2_out()
+; CHECK: [[A:%.*]] = alloca %struct.A,
+; CHECK: [[B:%.*]] = alloca %struct.A,
+; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A]])
+; CHECK-NEXT: unwind label %[[LPAD:[^\s]+]]
+; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B]])
+; CHECK-NEXT: unwind label %[[LPAD2:[^\s]+]]
+; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B]])
+; CHECK-NEXT: unwind label %[[LPAD2]]
+; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A]])
+; CHECK-NEXT: unwind label %[[LPAD]]
+
+
+;; Test 3 - Deal correctly with split unwind edges.
+define void @test3_out() uwtable ssp {
+entry:
+ invoke void @test0_in()
+ to label %ret unwind label %lpad
+
+ret:
+ ret void
+
+lpad:
+ %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
+ catch i8* bitcast (i8** @_ZTIi to i8*)
+ br label %lpad.cont
+
+lpad.cont:
+ call void @_ZSt9terminatev()
+ unreachable
+}
+
+; CHECK: define void @test3_out()
+; CHECK: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK-NEXT: invoke void @_ZN1AD1Ev(
+; CHECK-NEXT: to label %[[L:[^\s]+]] unwind
+; CHECK: [[L]]:
+; CHECK-NEXT: br label %[[JOIN:[^\s]+]]
+; CHECK: [[JOIN]]:
+; CHECK-NEXT: phi { i8*, i32 }
+; CHECK-NEXT: br label %lpad.cont
+; CHECK: lpad.cont:
+; CHECK-NEXT: call void @_ZSt9terminatev()
+
+
+;; Test 4 - Split unwind edges with a dominance problem
+define void @test4_out() uwtable ssp {
+entry:
+ invoke void @test0_in()
+ to label %cont unwind label %lpad.crit
+
+cont:
+ invoke void @opaque()
+ to label %ret unwind label %lpad
+
+ret:
+ ret void
+
+lpad.crit:
+ %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
+ catch i8* bitcast (i8** @_ZTIi to i8*)
+ call void @opaque() nounwind
+ br label %terminate
+
+lpad:
+ %exn2 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
+ catch i8* bitcast (i8** @_ZTIi to i8*)
+ br label %terminate
+
+terminate:
+ %phi = phi i32 [ 0, %lpad.crit ], [ 1, %lpad ]
+ call void @use(i32 %phi)
+ call void @_ZSt9terminatev()
+ unreachable
+}
+
+; CHECK: define void @test4_out()
+; CHECK: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK-NEXT: invoke void @_ZN1AD1Ev(
+; CHECK-NEXT: to label %[[L:[^\s]+]] unwind
+; CHECK: [[L]]:
+; CHECK-NEXT: br label %[[JOIN:[^\s]+]]
+; CHECK: invoke void @opaque()
+; CHECK-NEXT: unwind label %lpad
+; CHECK: lpad.crit:
+; CHECK-NEXT: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK-NEXT: br label %[[JOIN]]
+; CHECK: [[JOIN]]:
+; CHECK-NEXT: phi { i8*, i32 }
+; CHECK-NEXT: call void @opaque() [[NUW:#[0-9]+]]
+; CHECK-NEXT: br label %[[FIX:[^\s]+]]
+; CHECK: lpad:
+; CHECK-NEXT: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
+; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
+; CHECK-NEXT: br label %[[FIX]]
+; CHECK: [[FIX]]:
+; CHECK-NEXT: [[T1:%.*]] = phi i32 [ 0, %[[JOIN]] ], [ 1, %lpad ]
+; CHECK-NEXT: call void @use(i32 [[T1]])
+; CHECK-NEXT: call void @_ZSt9terminatev()
+
+; CHECK: attributes [[NUW]] = { nounwind }
+; CHECK: attributes #1 = { nounwind readnone }
+; CHECK: attributes #2 = { ssp uwtable }
+; CHECK: attributes #3 = { noreturn nounwind }
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