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llvm-6502/test/CodeGen/WinEH/cppeh-nonalloca-frame-values.ll
David Majnemer cc714e2142 Move the personality function from LandingPadInst to Function 
The personality routine currently lives in the LandingPadInst.

This isn't desirable because:
- All LandingPadInsts in the same function must have the same
  personality routine.  This means that each LandingPadInst beyond the
  first has an operand which produces no additional information.

- There is ongoing work to introduce EH IR constructs other than
  LandingPadInst.  Moving the personality routine off of any one
  particular Instruction and onto the parent function seems a lot better
  than have N different places a personality function can sneak onto an
  exceptional function.

Differential Revision: http://reviews.llvm.org/D10429

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239940 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-17 20:52:32 +00:00

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; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
; This test is based on the following code:
;
; struct SomeData {
; int a;
; int b;
; };
;
; void may_throw();
; void does_not_throw(int i);
; void dump(int *, int, SomeData&);
;
; void test() {
; int NumExceptions = 0;
; int ExceptionVal[10];
; SomeData Data = { 0, 0 };
;
; for (int i = 0; i < 10; ++i) {
; try {
; may_throw();
; Data.a += i;
; }
; catch (int e) {
; ExceptionVal[NumExceptions] = e;
; ++NumExceptions;
; if (e == i)
; Data.b += e;
; else
; Data.a += e;
; }
; does_not_throw(NumExceptions);
; }
; dump(ExceptionVal, NumExceptions, Data);
; }
;
; Unlike the cppeh-frame-vars.ll test, this test was generated using -O2
; optimization, which results in non-alloca values being used in the
; catch handler.
; ModuleID = 'cppeh-frame-vars.cpp'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
%struct.SomeData = type { i32, i32 }
$"\01??_R0H@8" = 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
; The function entry should be rewritten like this.
; CHECK: define void @"\01?test@@YAXXZ"()
; CHECK: entry:
; CHECK: [[NUMEXCEPTIONS_REGMEM:\%.+]] = alloca i32
; CHECK: [[I_REGMEM:\%.+]] = alloca i32
; CHECK: [[B_REGMEM:\%.+]] = alloca i32*
; CHECK: [[A_REGMEM:\%.+]] = alloca i32*
; CHECK: [[E_PTR:\%.+]] = alloca i32, align 4
; CHECK: [[EXCEPTIONVAL:\%.+]] = alloca [10 x i32], align 16
; CHECK: [[DATA_PTR:\%.+]] = alloca i64, align 8
; CHECK: [[TMPCAST:\%.+]] = bitcast i64* [[DATA_PTR]] to %struct.SomeData*
; CHECK: [[TMP:\%.+]] = bitcast [10 x i32]* [[EXCEPTIONVAL]] to i8*
; CHECK: call void @llvm.lifetime.start(i64 40, i8* [[TMP]])
; CHECK: store i64 0, i64* [[DATA_PTR]], align 8
; CHECK: [[A_PTR:\%.+]] = bitcast i64* [[DATA_PTR]] to i32*
; CHECK: store i32* [[A_PTR]], i32** [[A_REGMEM]]
; CHECK: [[B_PTR:\%.+]] = getelementptr inbounds %struct.SomeData, %struct.SomeData* [[TMPCAST]], i64 0, i32 1
; CHECK: store i32* [[B_PTR]], i32** [[B_REGMEM]]
; CHECK: call void (...) @llvm.frameescape(i32* %e, i32* %NumExceptions.020.reg2mem, [10 x i32]* [[EXCEPTIONVAL]], i32* %inc.reg2mem, i32* [[I_REGMEM]], i32** [[A_REGMEM]], i32** [[B_REGMEM]])
; CHECK: br label %for.body
; Function Attrs: uwtable
define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%e = alloca i32, align 4
%ExceptionVal = alloca [10 x i32], align 16
%Data = alloca i64, align 8
%tmpcast = bitcast i64* %Data to %struct.SomeData*
%0 = bitcast [10 x i32]* %ExceptionVal to i8*
call void @llvm.lifetime.start(i64 40, i8* %0) #1
store i64 0, i64* %Data, align 8
%a = bitcast i64* %Data to i32*
%b = getelementptr inbounds %struct.SomeData, %struct.SomeData* %tmpcast, i64 0, i32 1
br label %for.body
; CHECK: for.body:
; CHECK: [[NUMEXCEPTIONS_PHI:\%.*]] = phi i32 [ 0, %entry ], [ {{\%NumExceptions.*}}, %try.cont ]
; CHECK: [[I_PHI:\%.*]] = phi i32 [ 0, %entry ], [ {{\%inc.*}}, %try.cont ]
; CHECK: store i32 [[I_PHI]], i32* [[I_REGMEM]]
; CHECK: store i32 [[NUMEXCEPTIONS_PHI]], i32* [[NUMEXCEPTIONS_REGMEM]]
; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
for.body: ; preds = %entry, %try.cont
%NumExceptions.020 = phi i32 [ 0, %entry ], [ %NumExceptions.1, %try.cont ]
%i.019 = phi i32 [ 0, %entry ], [ %inc5, %try.cont ]
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont unwind label %lpad
; CHECK: invoke.cont: ; preds = %for.body
; CHECK: [[A_RELOAD:\%.+]] = load i32*, i32** [[A_REGMEM]]
; CHECK: [[TMP1:\%.+]] = load i32, i32* [[A_RELOAD]], align 8
; CHECK: [[I_RELOAD:\%.+]] = load i32, i32* [[I_REGMEM]]
; CHECK: [[ADD:\%.+]] = add nsw i32 [[TMP1]], [[I_RELOAD]]
; CHECK: [[A_RELOAD1:\%.+]] = load i32*, i32** [[A_REGMEM]]
; CHECK: [[NUMEXCEPTIONS_RELOAD:\%.+]] = load i32, i32* [[NUMEXCEPTIONS_REGMEM]]
; CHECK: br label %try.cont
invoke.cont: ; preds = %for.body
%1 = load i32, i32* %a, align 8, !tbaa !2
%add = add nsw i32 %1, %i.019
store i32 %add, i32* %a, align 8, !tbaa !2
br label %try.cont
; CHECK: [[LPAD_LABEL:lpad[0-9]*]]:{{[ ]+}}; preds = %for.body
; CHECK: landingpad { i8*, i32 }
; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch")
; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %[[SPLIT_RECOVER_BB:.*]]]
lpad: ; preds = %for.body
%2 = landingpad { i8*, i32 }
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
%3 = extractvalue { i8*, i32 } %2, 1
%4 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #1
%matches = icmp eq i32 %3, %4
br i1 %matches, label %catch, label %eh.resume
; CHECK-NOT: catch:
catch: ; preds = %lpad
%5 = extractvalue { i8*, i32 } %2, 0
%e.i8 = bitcast i32* %e to i8*
call void @llvm.eh.begincatch(i8* %5, i8* %e.i8) #1
%tmp8 = load i32, i32* %e, align 4, !tbaa !7
%idxprom = sext i32 %NumExceptions.020 to i64
%arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i64 0, i64 %idxprom
store i32 %tmp8, i32* %arrayidx, align 4, !tbaa !7
%inc = add nsw i32 %NumExceptions.020, 1
%cmp1 = icmp eq i32 %tmp8, %i.019
br i1 %cmp1, label %if.then, label %if.else
if.then: ; preds = %catch
%tmp9 = load i32, i32* %b, align 4, !tbaa !8
%add2 = add nsw i32 %tmp9, %i.019
store i32 %add2, i32* %b, align 4, !tbaa !8
br label %if.end
; CHECK-NOT: if.else:
if.else: ; preds = %catch
%tmp10 = load i32, i32* %a, align 8, !tbaa !2
%add4 = add nsw i32 %tmp10, %tmp8
store i32 %add4, i32* %a, align 8, !tbaa !2
br label %if.end
; CHECK-NOT: if.end:
; CHECK: [[SPLIT_RECOVER_BB]]:
; CHECK: [[INC_RELOAD:\%.*]] = load i32, i32*
; CHECK: br label %try.cont
if.end: ; preds = %if.else, %if.then
tail call void @llvm.eh.endcatch() #1
br label %try.cont
; CHECK: try.cont:{{[ ]+}}; preds = %[[SPLIT_RECOVER_BB]], %invoke.cont
; CHECK: [[NUMEXCEPTIONS_PHI:\%.*]] = phi i32 [ [[NUMEXCEPTIONS_RELOAD]], %invoke.cont ], [ [[INC_RELOAD]], %[[SPLIT_RECOVER_BB]] ]
; CHECK: tail call void @"\01?does_not_throw@@YAXH@Z"(i32 [[NUMEXCEPTIONS_PHI]])
; CHECK: [[I_RELOAD:\%.+]] = load i32, i32* [[I_REGMEM]]
; CHECK: [[INC:\%.+]] = add nuw nsw i32 [[I_RELOAD]], 1
; CHECK: [[CMP:\%.+]] = icmp slt i32 [[INC]], 10
; CHECK: br i1 [[CMP]], label %for.body, label %for.end
try.cont: ; preds = %if.end, %invoke.cont
%NumExceptions.1 = phi i32 [ %NumExceptions.020, %invoke.cont ], [ %inc, %if.end ]
tail call void @"\01?does_not_throw@@YAXH@Z"(i32 %NumExceptions.1)
%inc5 = add nuw nsw i32 %i.019, 1
%cmp = icmp slt i32 %inc5, 10
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %try.cont
%NumExceptions.1.lcssa = phi i32 [ %NumExceptions.1, %try.cont ]
%arraydecay = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i64 0, i64 0
call void @"\01?dump@@YAXPEAHHAEAUSomeData@@@Z"(i32* %arraydecay, i32 %NumExceptions.1.lcssa, %struct.SomeData* dereferenceable(8) %tmpcast)
call void @llvm.lifetime.end(i64 40, i8* %0) #1
ret void
eh.resume: ; preds = %lpad
%.lcssa = phi { i8*, i32 } [ %2, %lpad ]
resume { i8*, i32 } %.lcssa
}
; The following catch handler should be outlined.
; CHECK: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*)
; CHECK: entry:
; CHECK: [[RECOVER_E:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
; CHECK: [[E_PTR:\%.+]] = bitcast i8* [[RECOVER_E]] to i32*
; CHECK: [[RECOVER_NUMEXCEPTIONS:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1)
; CHECK: [[NUMEXCEPTIONS_REGMEM:\%.+]] = bitcast i8* [[RECOVER_NUMEXCEPTIONS]] to i32*
; CHECK: [[RECOVER_EXCEPTIONVAL:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2)
; CHECK: [[EXCEPTIONVAL:\%.+]] = bitcast i8* [[RECOVER_EXCEPTIONVAL]] to [10 x i32]*
; CHECK: [[RECOVER_INC:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 3)
; CHECK: [[INC_REGMEM:\%.+]] = bitcast i8* [[RECOVER_INC]] to i32*
; CHECK: [[RECOVER_I:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 4)
; CHECK: [[I_REGMEM:\%.+]] = bitcast i8* [[RECOVER_I]] to i32*
; CHECK: [[RECOVER_A:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 5)
; CHECK: [[A_REGMEM:\%.+]] = bitcast i8* [[RECOVER_A]] to i32**
; CHECK: [[RECOVER_B:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 6)
; CHECK: [[B_REGMEM:\%.+]] = bitcast i8* [[RECOVER_B]] to i32**
; CHECK: [[E_I8PTR:\%.+]] = bitcast i32* [[E_PTR]] to i8*
; CHECK: [[TMP:\%.+]] = load i32, i32* [[E_PTR]], align 4
; CHECK: [[NUMEXCEPTIONS_RELOAD:\%.+]] = load i32, i32* [[NUMEXCEPTIONS_REGMEM]]
; CHECK: [[IDXPROM:\%.+]] = sext i32 [[NUMEXCEPTIONS_RELOAD]] to i64
; CHECK: [[ARRAYIDX:\%.+]] = getelementptr inbounds [10 x i32], [10 x i32]* [[EXCEPTIONVAL]], i64 0, i64 [[IDXPROM]]
; CHECK: store i32 [[TMP]], i32* [[ARRAYIDX]], align 4
; CHECK: [[NUMEXCEPTIONS_RELOAD:\%.+]] = load i32, i32* [[NUMEXCEPTIONS_REGMEM]]
; CHECK: [[INC:\%.+]] = add nsw i32 [[NUMEXCEPTIONS_RELOAD]], 1
; CHECK: [[CMP:\%.+]] = icmp eq i32 [[TMP]], [[I_RELOAD]]
; CHECK: br i1 [[CMP]], label %if.then, label %if.else
;
; CHECK: if.then:{{[ ]+}}; preds = %entry
; CHECK: [[B_RELOAD:\%.+]] = load i32*, i32** [[B_REGMEM]]
; CHECK: [[TMP1:\%.+]] = load i32, i32* [[B_RELOAD]], align 4
; CHECK: [[I_RELOAD:\%.+]] = load i32, i32* [[I_REGMEM]]
; CHECK: [[ADD:\%.+]] = add nsw i32 [[TMP1]], [[I_RELOAD]]
; CHECK: [[B_RELOAD:\%.+]] = load i32*, i32** [[B_REGMEM]]
; CHECK: store i32 [[ADD]], i32* [[B_RELOAD]], align 4
; CHECK: br label %if.end
;
; CHECK: if.else:{{[ ]+}}; preds = %entry
; CHECK: [[A_RELOAD:\%.+]] = load i32*, i32** [[A_REGMEM]]
; CHECK: [[TMP2:\%.+]] = load i32, i32* [[A_RELOAD]], align 8
; CHECK: [[ADD2:\%.+]] = add nsw i32 [[TMP2]], [[TMP]]
; CHECK: [[A_RELOAD:\%.+]] = load i32*, i32** [[A_REGMEM]]
; CHECK: store i32 [[ADD2]], i32* [[A_RELOAD]], align 8
; CHECK: br label %if.end
;
; CHECK: if.end:{{[ ]+}}; preds = %if.else, %if.then
; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %[[SPLIT_RECOVER_BB]])
; CHECK: }
; Function Attrs: nounwind
declare void @llvm.lifetime.start(i64, i8* nocapture) #1
declare void @"\01?may_throw@@YAXXZ"() #2
declare i32 @__CxxFrameHandler3(...)
; Function Attrs: nounwind readnone
declare i32 @llvm.eh.typeid.for(i8*) #3
declare void @llvm.eh.begincatch(i8*, i8*)
declare void @llvm.eh.endcatch()
declare void @"\01?does_not_throw@@YAXH@Z"(i32) #2
declare void @"\01?dump@@YAXPEAHHAEAUSomeData@@@Z"(i32*, i32, %struct.SomeData* dereferenceable(8)) #2
; Function Attrs: nounwind
declare void @llvm.lifetime.end(i64, i8* nocapture) #1
attributes #0 = { 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" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind }
attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { nounwind readnone }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"PIC Level", i32 2}
!1 = !{!"clang version 3.7.0 (trunk 228868)"}
!2 = !{!3, !4, i64 0}
!3 = !{!"?AUSomeData@@", !4, i64 0, !4, i64 4}
!4 = !{!"int", !5, i64 0}
!5 = !{!"omnipotent char", !6, i64 0}
!6 = !{!"Simple C/C++ TBAA"}
!7 = !{!4, !4, i64 0}
!8 = !{!3, !4, i64 4}
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