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llvm-project/llvm/test/CodeGen/X86/funclet-layout.ll

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[WinEH] Add a funclet layout pass Windows EH funclets need to be contiguous. The FuncletLayout pass will ensure that the funclets are together and begin with a funclet entry MBB. Differential Revision: http://reviews.llvm.org/D12943 llvm-svn: 247937
2015-09-18 04:45:18 +08:00
; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
[WinEH] Make FuncletLayout more robust against catchret Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
2015-10-02 02:44:59 +08:00
%eh.ThrowInfo = type { i32, i32, i32, i32 }
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
@"\01??_7type_info@@6B@" = external constant i8*
@"\01??_R0H@8" = internal global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }
[WinEH] Make FuncletLayout more robust against catchret Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
2015-10-02 02:44:59 +08:00
define void @test1(i1 %B) personality i32 (...)* @__CxxFrameHandler3 {
[WinEH] Add a funclet layout pass Windows EH funclets need to be contiguous. The FuncletLayout pass will ensure that the funclets are together and begin with a funclet entry MBB. Differential Revision: http://reviews.llvm.org/D12943 llvm-svn: 247937
2015-09-18 04:45:18 +08:00
entry:
invoke void @g()
to label %unreachable unwind label %catch.dispatch
catch.dispatch:
%cp = catchpad [i8* null, i32 64, i8* null]
to label %catch unwind label %catchendblock
catch:
br i1 %B, label %catchret, label %catch
catchret:
catchret %cp to label %try.cont
try.cont:
ret void
catchendblock:
catchendpad unwind to caller
unreachable:
unreachable
}
[WinEH] Make FuncletLayout more robust against catchret Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
2015-10-02 02:44:59 +08:00
; CHECK-LABEL: test1:
[WinEH] Add a funclet layout pass Windows EH funclets need to be contiguous. The FuncletLayout pass will ensure that the funclets are together and begin with a funclet entry MBB. Differential Revision: http://reviews.llvm.org/D12943 llvm-svn: 247937
2015-09-18 04:45:18 +08:00
; The entry funclet contains %entry and %try.cont
; CHECK: # %entry
; CHECK: # %try.cont
; CHECK: retq
; The catch funclet contains %catch and %catchret
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
; CHECK: # %catch{{$}}
[WinEH] Add a funclet layout pass Windows EH funclets need to be contiguous. The FuncletLayout pass will ensure that the funclets are together and begin with a funclet entry MBB. Differential Revision: http://reviews.llvm.org/D12943 llvm-svn: 247937
2015-09-18 04:45:18 +08:00
; CHECK: # %catchret
; CHECK: retq
declare void @g()
[WinEH] Make FuncletLayout more robust against catchret Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
2015-10-02 02:44:59 +08:00
define i32 @test2(i1 %B) personality i32 (...)* @__CxxFrameHandler3 {
entry:
invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #1
to label %unreachable unwind label %catch.dispatch
catch.dispatch: ; preds = %entry
%0 = catchpad [i8* null, i32 64, i8* null]
to label %catch unwind label %catchendblock
catch: ; preds = %catch.dispatch
invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #1
to label %unreachable unwind label %catch.dispatch.1
catch.dispatch.1: ; preds = %catch
%1 = catchpad [i8* null, i32 64, i8* null]
to label %catch.3 unwind label %catchendblock.2
catch.3: ; preds = %catch.dispatch.1
catchret %1 to label %try.cont
try.cont: ; preds = %catch.3
catchret %0 to label %try.cont.5
try.cont.5: ; preds = %try.cont
ret i32 0
catchendblock.2: ; preds = %catch.dispatch.1
catchendpad unwind label %catchendblock
catchendblock: ; preds = %catchendblock.2, %catch.dispatch
catchendpad unwind to caller
unreachable: ; preds = %catch, %entry
unreachable
}
; CHECK-LABEL: test2:
; The entry funclet contains %entry and %try.cont.5
; CHECK: # %entry
; CHECK: # %try.cont.5
; CHECK: retq
[WinEH] Create a separate MBB for funclet prologues Our current emission strategy is to emit the funclet prologue in the CatchPad's normal destination. This is problematic because intra-funclet control flow to the normal destination is not erroneous and results in us reevaluating the prologue if said control flow is taken. Instead, use the CatchPad's location for the funclet prologue. This correctly models our desire to have unwind edges evaluate the prologue but edges to the normal destination result in typical control flow. Differential Revision: http://reviews.llvm.org/D13424 llvm-svn: 249483
2015-10-07 07:31:59 +08:00
; The outer catch funclet contains %catch.dispatch
; CHECK: # %catch.dispatch{{$}}
; CHECK: callq _CxxThrowException
; CHECK: # %unreachable
; CHECK: ud2
[WinEH] Make FuncletLayout more robust against catchret Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
2015-10-02 02:44:59 +08:00
[WinEH] Create a separate MBB for funclet prologues Our current emission strategy is to emit the funclet prologue in the CatchPad's normal destination. This is problematic because intra-funclet control flow to the normal destination is not erroneous and results in us reevaluating the prologue if said control flow is taken. Instead, use the CatchPad's location for the funclet prologue. This correctly models our desire to have unwind edges evaluate the prologue but edges to the normal destination result in typical control flow. Differential Revision: http://reviews.llvm.org/D13424 llvm-svn: 249483
2015-10-07 07:31:59 +08:00
; The inner catch funclet contains %catch.dispatch.1
; CHECK: # %catch.dispatch.1
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
; CHECK: retq
[WinEH] Permit branch folding in the face of funclets Track which basic blocks belong to which funclets. Permit branch folding to fire but only if it can prove that doing so will not cause code in one funclet to be reused in another. llvm-svn: 249257
2015-10-04 10:22:52 +08:00
define void @test3(i1 %V) #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
entry:
invoke void @g()
to label %try.cont unwind label %catch.dispatch
catch.dispatch: ; preds = %entry
%0 = catchpad [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i8* null]
to label %catch.2 unwind label %catch.dispatch.1
catch.2: ; preds = %catch.dispatch
tail call void @exit(i32 0) #2
unreachable
catch.dispatch.1: ; preds = %catch.dispatch
%1 = catchpad [i8* null, i32 64, i8* null]
to label %catch unwind label %catchendblock
catch: ; preds = %catch.dispatch.1
tail call void @exit(i32 0) #2
unreachable
catchendblock: ; preds = %catch.dispatch.1
catchendpad unwind to caller
try.cont: ; preds = %entry
[WinEH] Permit branch folding in the face of funclets Track which basic blocks belong to which funclets. Permit branch folding to fire but only if it can prove that doing so will not cause code in one funclet to be reused in another. llvm-svn: 249257
2015-10-04 10:22:52 +08:00
br i1 %V, label %exit_one, label %exit_two
exit_one:
tail call void @exit(i32 0)
unreachable
exit_two:
tail call void @exit(i32 0)
unreachable
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
}
; CHECK-LABEL: test3:
; The entry funclet contains %entry and %try.cont
; CHECK: # %entry
[WinEH] Make FuncletLayout more robust against catchret Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
2015-10-02 02:44:59 +08:00
; CHECK: # %try.cont
[WinEH] Permit branch folding in the face of funclets Track which basic blocks belong to which funclets. Permit branch folding to fire but only if it can prove that doing so will not cause code in one funclet to be reused in another. llvm-svn: 249257
2015-10-04 10:22:52 +08:00
; CHECK: callq exit
; CHECK-NOT: # exit_one
; CHECK-NOT: # exit_two
; CHECK: ud2
[WinEH] Make FuncletLayout more robust against catchret Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
2015-10-02 02:44:59 +08:00
[WinEH] Create a separate MBB for funclet prologues Our current emission strategy is to emit the funclet prologue in the CatchPad's normal destination. This is problematic because intra-funclet control flow to the normal destination is not erroneous and results in us reevaluating the prologue if said control flow is taken. Instead, use the CatchPad's location for the funclet prologue. This correctly models our desire to have unwind edges evaluate the prologue but edges to the normal destination result in typical control flow. Differential Revision: http://reviews.llvm.org/D13424 llvm-svn: 249483
2015-10-07 07:31:59 +08:00
; The catch(...) funclet contains %catch.dispatch
; CHECK: # %catch.dispatch{{$}}
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
; CHECK: callq exit
[WinEH] Permit branch folding in the face of funclets Track which basic blocks belong to which funclets. Permit branch folding to fire but only if it can prove that doing so will not cause code in one funclet to be reused in another. llvm-svn: 249257
2015-10-04 10:22:52 +08:00
; CHECK: ud2
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
[WinEH] Create a separate MBB for funclet prologues Our current emission strategy is to emit the funclet prologue in the CatchPad's normal destination. This is problematic because intra-funclet control flow to the normal destination is not erroneous and results in us reevaluating the prologue if said control flow is taken. Instead, use the CatchPad's location for the funclet prologue. This correctly models our desire to have unwind edges evaluate the prologue but edges to the normal destination result in typical control flow. Differential Revision: http://reviews.llvm.org/D13424 llvm-svn: 249483
2015-10-07 07:31:59 +08:00
; The catch(int) funclet contains %catch.dispatch.1
; CHECK: # %catch.dispatch.1
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
; CHECK: callq exit
[WinEH] Permit branch folding in the face of funclets Track which basic blocks belong to which funclets. Permit branch folding to fire but only if it can prove that doing so will not cause code in one funclet to be reused in another. llvm-svn: 249257
2015-10-04 10:22:52 +08:00
; CHECK: ud2
[WinEH] Stop BranchFolding from merging across funclets BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
2015-10-02 05:04:13 +08:00
declare void @exit(i32) noreturn nounwind
[WinEH] Make FuncletLayout more robust against catchret Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
2015-10-02 02:44:59 +08:00
declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
[WinEH] Add a funclet layout pass Windows EH funclets need to be contiguous. The FuncletLayout pass will ensure that the funclets are together and begin with a funclet entry MBB. Differential Revision: http://reviews.llvm.org/D12943 llvm-svn: 247937
2015-09-18 04:45:18 +08:00
declare i32 @__CxxFrameHandler3(...)