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llvm-6502/test/CodeGen/WinEH/cppeh-nonalloca-frame-values.ll
Andrew Kaylor 92dabb5710 Moving WinEH outlining tests to an architecture neutral location 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231155 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-03 22:33:39 +00:00

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LLVM
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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
; This structure should be declared for the frame allocation block.
; CHECK: %"struct.\01?test@@YAXXZ.ehdata" = type { i32, i8*, i32, i32, [10 x i32], i32, i32*, i32* }
; The function entry should be rewritten like this.
; CHECK: define void @"\01?test@@YAXXZ"() #0 {
; CHECK: entry:
; CHECK: %frame.alloc = call i8* @llvm.frameallocate(i32 88)
; CHECK: %eh.data = bitcast i8* %frame.alloc to %"struct.\01?test@@YAXXZ.ehdata"*
; CHECK-NOT: %ExceptionVal = alloca [10 x i32], align 16
; CHECK: %NumExceptions.020.reg2mem = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 3
; CHECK: %i.019.reg2mem = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 5
; CHECK: %ExceptionVal = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 4
; CHECK: %Data = alloca i64, align 8
; CHECK: %tmpcast = bitcast i64* %Data to %struct.SomeData*
; CHECK: %0 = bitcast [10 x i32]* %ExceptionVal to i8*
; CHECK: call void @llvm.lifetime.start(i64 40, i8* %0) #1
; CHECK: store i64 0, i64* %Data, align 8
; CHECK: %a.reg2mem = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 6
; CHECK: %a = bitcast i64* %Data to i32*
; CHECK: store i32* %a, i32** %a.reg2mem
; CHECK: %b.reg2mem = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 7
; CHECK: %b = getelementptr inbounds %struct.SomeData, %struct.SomeData* %tmpcast, i64 0, i32 1
; CHECK: store i32* %b, i32** %b.reg2mem
; CHECK: store i32 0, i32* %NumExceptions.020.reg2mem
; CHECK: store i32 0, i32* %i.019.reg2mem
; CHECK: br label %for.body
; Function Attrs: uwtable
define void @"\01?test@@YAXXZ"() #0 {
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-NOT: %NumExceptions.020 = phi i32 [ 0, %entry ], [ %NumExceptions.1, %try.cont ]
; CHECK-NOT: %i.019 = phi i32 [ 0, %entry ], [ %inc5, %try.cont ]
; CHECK: %i.019.reload = load i32, i32* %i.019.reg2mem
; CHECK: %NumExceptions.020.reload = load i32, i32* %NumExceptions.020.reg2mem
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-NOT: %1 = load i32, i32* %a, align 8, !tbaa !2
; CHECK-NOT: %add = add nsw i32 %1, %i.019
; CHECK-NOT: store i32 %add, i32* %a, align 8, !tbaa !2
; CHECK: %a.reload3 = load volatile i32*, i32** %a.reg2mem
; CHECK: %1 = load i32, i32* %a.reload3, align 8, !tbaa !2
; CHECK: %add = add nsw i32 %1, %i.019.reload
; CHECK: %a.reload2 = load volatile i32*, i32** %a.reg2mem
; CHECK: store i32 %add, i32* %a.reload2, align 8, !tbaa !2
; 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
lpad: ; preds = %for.body
%2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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
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
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
if.end: ; preds = %if.else, %if.then
tail call void @llvm.eh.endcatch() #1
br label %try.cont
; CHECK: try.cont: ; preds = %if.end, %invoke.cont
; CHECK-NOT: %NumExceptions.1 = phi i32 [ %NumExceptions.020, %invoke.cont ], [ %inc, %if.end ]
; CHECK: %NumExceptions.1 = phi i32 [ %NumExceptions.020.reload, %invoke.cont ], [ %inc, %if.end ]
; CHECK: tail call void @"\01?does_not_throw@@YAXH@Z"(i32 %NumExceptions.1)
; CHECK-NOT: %inc5 = add nuw nsw i32 %i.019, 1
; CHECK: %inc5 = add nuw nsw i32 %i.019.reload, 1
; CHECK: %cmp = icmp slt i32 %inc5, 10
; CHECK: store i32 %NumExceptions.1, i32* %NumExceptions.020.reg2mem
; CHECK: store i32 %inc5, i32* %i.019.reg2mem
; 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: %eh.alloc = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1)
; CHECK: %eh.data = bitcast i8* %eh.alloc to %"struct.\01?test@@YAXXZ.ehdata"*
; CHECK: %eh.obj.ptr = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 1
; CHECK: %eh.obj = load i8*, i8** %eh.obj.ptr
; CHECK: %e = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 2
; CHECK: %eh.temp.alloca = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 3
; CHECK: %NumExceptions.020.reload = load i32, i32* %eh.temp.alloca
; CHECK: %ExceptionVal = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 4
; CHECK: %eh.temp.alloca1 = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 5
; CHECK: %i.019.reload = load i32, i32* %eh.temp.alloca1
; CHECK: %eh.temp.alloca2 = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 6
; CHECK: %a.reload = load i32*, i32** %eh.temp.alloca2
; CHECK: %eh.temp.alloca3 = getelementptr inbounds %"struct.\01?test@@YAXXZ.ehdata", %"struct.\01?test@@YAXXZ.ehdata"* %eh.data, i32 0, i32 7
; CHECK: %b.reload = load i32*, i32** %eh.temp.alloca3
; CHECK: %e.i8 = bitcast i32* %e to i8*
; CHECK: %tmp8 = load i32, i32* %e, align 4, !tbaa !7
; CHECK: %idxprom = sext i32 %NumExceptions.020.reload to i64
; CHECK: %arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* %ExceptionVal, i64 0, i64 %idxprom
; CHECK: store i32 %tmp8, i32* %arrayidx, align 4, !tbaa !7
; CHECK: %inc = add nsw i32 %NumExceptions.020.reload, 1
; CHECK: %cmp1 = icmp eq i32 %tmp8, %i.019.reload
; CHECK: br i1 %cmp1, label %if.then, label %if.else
;
; CHECK: if.then: ; preds = %entry
; CHECK: %tmp9 = load i32, i32* %b.reload, align 4, !tbaa !8
; CHECK: %add2 = add nsw i32 %tmp9, %i.019.reload
; CHECK: store i32 %add2, i32* %b.reload, align 4, !tbaa !8
; CHECK: br label %if.end
;
; CHECK: if.else: ; preds = %entry
; CHECK: %tmp10 = load i32, i32* %a.reload, align 8, !tbaa !2
; CHECK: %add4 = add nsw i32 %tmp10, %tmp8
; CHECK: store i32 %add4, i32* %a.reload, align 8, !tbaa !2
; CHECK: br label %if.end
;
; CHECK: if.end: ; preds = %if.else, %if.then
; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont)
; 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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