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c511cef4af
Summary: Funclet EH personalities require a tree-like nesting among funclets (enforced by the ParentPad linkage in the IR), and also require that unwind edges conform to certain rules with respect to the tree: - An unwind edge may exit 0 or more ancestor pads - An unwind edge must enter exactly one EH pad, which must be distinct from any exited pads - A cleanupret's edge must exit its cleanuppad Describe these rules in the LangRef, and enforce them in the verifier. Reviewers: rnk, majnemer, andrew.w.kaylor Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D15961 llvm-svn: 257272
137 lines
3.2 KiB
LLVM
137 lines
3.2 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis > %t1.ll
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; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
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; RUN: diff %t1.ll %t2.ll
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@_ZTIc = external constant i8*
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@_ZTId = external constant i8*
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@_ZTIPKc = external constant i8*
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define void @_Z3barv() uwtable optsize ssp personality i32 (...)* @__gxx_personality_v0 {
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entry:
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invoke void @_Z3quxv() optsize
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to label %try.cont unwind label %lpad
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try.cont: ; preds = %entry, %invoke.cont4
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ret void
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lpad: ; preds = %entry
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%exn = landingpad {i8*, i32}
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cleanup
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catch i8** @_ZTIc
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filter [2 x i8**] [i8** @_ZTIPKc, i8** @_ZTId]
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resume { i8*, i32 } %exn
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}
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declare void @_Z3quxv() optsize
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declare i32 @__gxx_personality_v0(...)
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define void @cleanupret0() personality i32 (...)* @__gxx_personality_v0 {
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entry:
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invoke void @_Z3quxv() optsize
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to label %exit unwind label %pad
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pad:
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%cp = cleanuppad within none [i7 4]
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cleanupret from %cp unwind to caller
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exit:
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ret void
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}
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; forward ref by name
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define void @cleanupret1() personality i32 (...)* @__gxx_personality_v0 {
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entry:
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invoke void @_Z3quxv() optsize
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to label %exit unwind label %pad
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cleanup:
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cleanupret from %cp unwind to caller
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pad:
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%cp = cleanuppad within none []
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br label %cleanup
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exit:
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ret void
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}
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; forward ref by ID
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define void @cleanupret2() personality i32 (...)* @__gxx_personality_v0 {
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entry:
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invoke void @_Z3quxv() optsize
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to label %exit unwind label %pad
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cleanup:
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cleanupret from %0 unwind to caller
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pad:
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%0 = cleanuppad within none []
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br label %cleanup
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exit:
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ret void
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}
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define void @catchret0() personality i32 (...)* @__gxx_personality_v0 {
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entry:
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invoke void @_Z3quxv() optsize
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to label %exit unwind label %pad
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pad:
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%cs1 = catchswitch within none [label %catch] unwind to caller
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catch:
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%cp = catchpad within %cs1 [i7 4]
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catchret from %cp to label %exit
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exit:
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ret void
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}
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; forward ref by name
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define void @catchret1() personality i32 (...)* @__gxx_personality_v0 {
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entry:
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invoke void @_Z3quxv() optsize
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to label %exit unwind label %pad
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catchret:
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catchret from %cp to label %exit
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pad:
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%cs1 = catchswitch within none [label %catch] unwind to caller
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catch:
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%cp = catchpad within %cs1 [i7 4]
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br label %catchret
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exit:
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ret void
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}
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; forward ref by ID
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define void @catchret2() personality i32 (...)* @__gxx_personality_v0 {
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entry:
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invoke void @_Z3quxv() optsize
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to label %exit unwind label %pad
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catchret:
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catchret from %0 to label %exit
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pad:
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%cs1 = catchswitch within none [label %catch] unwind to caller
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catch:
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%0 = catchpad within %cs1 [i7 4]
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br label %catchret
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exit:
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ret void
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}
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define i8 @catchpad() personality i32 (...)* @__gxx_personality_v0 {
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entry:
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invoke void @_Z3quxv() optsize
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to label %exit unwind label %bb2
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bb2:
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%cs1 = catchswitch within none [label %catch] unwind to caller
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catch:
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catchpad within %cs1 [i7 4]
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br label %exit
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exit:
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ret i8 0
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}
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define void @cleanuppad() personality i32 (...)* @__gxx_personality_v0 {
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entry:
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br label %try.cont
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try.cont:
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invoke void @_Z3quxv() optsize
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to label %try.cont unwind label %bb
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bb:
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cleanuppad within none [i7 4]
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ret void
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}
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