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llvm-6502/test/CodeGen/WinEH/cppeh-state-calc-1.ll
Reid Kleckner 8f32e5f0d6 Rename llvm.frameescape and llvm.framerecover to localescape and localrecover 
Summary:
Initially, these intrinsics seemed like part of a family of "frame"
related intrinsics, but now I think that's more confusing than helpful.
Initially, the LangRef specified that this would create a new kind of
allocation that would be allocated at a fixed offset from the frame
pointer (EBP/RBP). We ended up dropping that design, and leaving the
stack frame layout alone.

These intrinsics are really about sharing local stack allocations, not
frame pointers. I intend to go further and add an `llvm.localaddress()`
intrinsic that returns whatever register (EBP, ESI, ESP, RBX) is being
used to address locals, which should not be confused with the frame
pointer.

Naming suggestions at this point are welcome, I'm happy to re-run sed.

Reviewers: majnemer, nicholas

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11011

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241633 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-07 22:25:32 +00:00

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; RUN: llc < %s | FileCheck %s
; This test was generated from the following code.
;
; void test() {
; try {
; try {
; try {
; two();
; throw 2;
; } catch (int x) {
; catch_two();
; }
; a();
; throw 'a';
; } catch (char c) {
; catch_a();
; }
; one();
; throw 1;
; } catch(int x) {
; catch_one();
; } catch(...) {
; catch_all();
; }
; }
;
; The function calls before the throws were declared as 'noexcept' and are
; just here to make blocks easier to identify in the IR.
; ModuleID = '<stdin>'
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
%eh.CatchHandlerType = type { i32, i8* }
%eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
%eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
%eh.ThrowInfo = type { i32, i32, i32, i32 }
$"\01??_R0H@8" = comdat any
$"\01??_R0D@8" = comdat any
$"_CT??_R0H@84" = comdat any
$_CTA1H = comdat any
$_TI1H = comdat any
$"_CT??_R0D@81" = comdat any
$_CTA1D = comdat any
$_TI1D = comdat any
@"\01??_7type_info@@6B@" = external constant i8*
@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
@llvm.eh.handlertype.H.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
@"\01??_R0D@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".D\00" }, comdat
@llvm.eh.handlertype.D.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0D@8" to i8*) }, section "llvm.metadata"
@__ImageBase = external constant i8
@"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
@_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
@_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
@"_CT??_R0D@81" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0D@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 1, i32 0 }, section ".xdata", comdat
@_CTA1D = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0D@81" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
@_TI1D = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1D to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
; Function Attrs: nounwind uwtable
define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%tmp = alloca i32, align 4
%x = alloca i32, align 4
%tmp2 = alloca i8, align 1
%c = alloca i8, align 1
%tmp11 = alloca i32, align 4
%x21 = alloca i32, align 4
call void @"\01?two@@YAXXZ"() #3
store i32 2, i32* %tmp
%0 = bitcast i32* %tmp to i8*
call void (...) @llvm.localescape(i32* %x, i8* %c, i32* %x21)
invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #5
to label %unreachable unwind label %lpad
lpad: ; preds = %entry
%1 = landingpad { i8*, i32 }
catch i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*)
catch %eh.CatchHandlerType* @llvm.eh.handlertype.D.0
catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0
catch i8* null
%recover = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch", i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.D.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1", i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch2", i32 1, i8* null, i32 -1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch3")
indirectbr i8* %recover, [label %try.cont, label %try.cont10, label %try.cont22]
try.cont: ; preds = %lpad
call void @"\01?a@@YAXXZ"() #3
store i8 97, i8* %tmp2
invoke void @_CxxThrowException(i8* %tmp2, %eh.ThrowInfo* @_TI1D) #5
to label %unreachable unwind label %lpad3
lpad3: ; preds = %try.cont
%2 = landingpad { i8*, i32 }
catch %eh.CatchHandlerType* @llvm.eh.handlertype.D.0
catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0
catch i8* null
%recover1 = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.D.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1", i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch2", i32 1, i8* null, i32 -1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch3")
indirectbr i8* %recover1, [label %try.cont10, label %try.cont22]
try.cont10: ; preds = %lpad3, %lpad
call void @"\01?one@@YAXXZ"() #3
store i32 1, i32* %tmp11
%3 = bitcast i32* %tmp11 to i8*
invoke void @_CxxThrowException(i8* %3, %eh.ThrowInfo* @_TI1H) #5
to label %unreachable unwind label %lpad12
lpad12: ; preds = %try.cont10
%4 = landingpad { i8*, i32 }
catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0
catch i8* null
%recover2 = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch2", i32 1, i8* null, i32 -1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch3")
indirectbr i8* %recover2, [label %try.cont22]
try.cont22: ; preds = %lpad12, %lpad3, %lpad
ret void
unreachable: ; preds = %try.cont10, %try.cont, %entry
unreachable
}
; Function Attrs: nounwind
declare void @"\01?two@@YAXXZ"() #1
declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
declare i32 @__CxxFrameHandler3(...)
; Function Attrs: nounwind readnone
declare i32 @llvm.eh.typeid.for(i8*) #2
; Function Attrs: nounwind
declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3
; Function Attrs: nounwind
declare void @"\01?catch_two@@YAXXZ"() #1
; Function Attrs: nounwind
declare void @llvm.eh.endcatch() #3
; Function Attrs: nounwind
declare void @"\01?a@@YAXXZ"() #1
; Function Attrs: nounwind
declare void @"\01?catch_a@@YAXXZ"() #1
; Function Attrs: nounwind
declare void @"\01?one@@YAXXZ"() #1
; Function Attrs: nounwind
declare void @"\01?catch_all@@YAXXZ"() #1
; Function Attrs: nounwind
declare void @"\01?catch_one@@YAXXZ"() #1
; Function Attrs: nounwind
declare i8* @llvm.eh.actions(...) #3
define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*) #4 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%x.i8 = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
%x = bitcast i8* %x.i8 to i32*
%2 = bitcast i32* %x to i8*
call void @"\01?catch_two@@YAXXZ"() #3
invoke void @llvm.donothing()
to label %entry.split unwind label %stub
entry.split: ; preds = %entry
ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont)
stub: ; preds = %entry
%3 = landingpad { i8*, i32 }
cleanup
%recover = call i8* (...) @llvm.eh.actions()
unreachable
}
; Function Attrs: nounwind readnone
declare void @llvm.donothing() #2
define internal i8* @"\01?test@@YAXXZ.catch1"(i8*, i8*) #4 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
call void @"\01?catch_a@@YAXXZ"() #3
invoke void @llvm.donothing()
to label %entry.split unwind label %stub
entry.split: ; preds = %entry
ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont10)
stub: ; preds = %entry
%2 = landingpad { i8*, i32 }
cleanup
%recover = call i8* (...) @llvm.eh.actions()
unreachable
}
define internal i8* @"\01?test@@YAXXZ.catch2"(i8*, i8*) #4 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%x21.i8 = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2)
%x21 = bitcast i8* %x21.i8 to i32*
%2 = bitcast i32* %x21 to i8*
call void @"\01?catch_one@@YAXXZ"() #3
invoke void @llvm.donothing()
to label %entry.split unwind label %stub
entry.split: ; preds = %entry
ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont22)
stub: ; preds = %entry
%3 = landingpad { i8*, i32 }
cleanup
%recover = call i8* (...) @llvm.eh.actions()
unreachable
}
define internal i8* @"\01?test@@YAXXZ.catch3"(i8*, i8*) #4 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
call void @"\01?catch_all@@YAXXZ"() #3
invoke void @llvm.donothing()
to label %entry.split unwind label %stub
entry.split: ; preds = %entry
ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont22)
stub: ; preds = %entry
%2 = landingpad { i8*, i32 }
cleanup
%recover = call i8* (...) @llvm.eh.actions()
unreachable
}
; Function Attrs: nounwind
declare void @llvm.localescape(...) #3
; Function Attrs: nounwind readnone
declare i8* @llvm.localrecover(i8*, i8*, i32) #2
attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" "wineh-parent"="?test@@YAXXZ" }
attributes #1 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind }
attributes #4 = { "wineh-parent"="?test@@YAXXZ" }
attributes #5 = { noreturn }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"PIC Level", i32 2}
!1 = !{!"clang version 3.7.0 (trunk 236059)"}
; CHECK-LABEL: "$cppxdata$?test@@YAXXZ":
; CHECK-NEXT: .long 429065506
; CHECK-NEXT: .long
; CHECK-NEXT: .long ("$stateUnwindMap$?test@@YAXXZ")@IMGREL
; CHECK-NEXT: .long
; CHECK-NEXT: .long ("$tryMap$?test@@YAXXZ")@IMGREL
; CHECK-NEXT: .long
; CHECK-NEXT: .long ("$ip2state$?test@@YAXXZ")@IMGREL
; CHECK-NEXT: .long 40
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 1
; CHECK: "$stateUnwindMap$?test@@YAXXZ":
; CHECK: "$tryMap$?test@@YAXXZ":
; CHECK: "$handlerMap$0$?test@@YAXXZ":
; CHECK: "$ip2state$?test@@YAXXZ":
; CHECK-NEXT: .long .Lfunc_begin0@IMGREL
; CHECK-NEXT: .long -1
; CHECK-NEXT: .long .Ltmp0@IMGREL
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long .Ltmp3@IMGREL
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long .Ltmp6@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long .Lfunc_begin1@IMGREL
; CHECK-NEXT: .long 3
; CHECK-NEXT: .long .Lfunc_begin2@IMGREL
; CHECK-NEXT: .long 4
; CHECK-NEXT: .long .Lfunc_begin3@IMGREL
; CHECK-NEXT: .long 5
; CHECK-NEXT: .long .Lfunc_begin4@IMGREL
; CHECK-NEXT: .long 6
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