forked from OSchip/llvm-project
195 lines
8.4 KiB
LLVM
195 lines
8.4 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
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; This test is built from the following code:
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; struct A {
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; A(int a);
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; A(const A &o);
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; ~A();
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; int a;
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; };
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;
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; void may_throw();
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;
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; int test(A a) {
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; try {
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; may_throw();
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; }
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; catch (int e) {
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; return a.a + e;
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; }
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; return 0;
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; }
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;
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; The test was built for a 32-bit Windows target and then the reference to
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; the inalloca instruction was manually sunk into the landingpad.
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; ModuleID = 'cppeh-inalloca.cpp'
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%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
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%struct.A = type { i32 }
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$"\01??_R0H@8" = comdat any
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@"\01??_7type_info@@6B@" = external constant i8*
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@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
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; The function entry should be rewritten like this.
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; CHECK: define i32 @"\01?test@@YAHUA@@@Z"(<{ %struct.A }>* inalloca)
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; CHECK: entry:
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; CHECK: [[TMP_REGMEM:\%.+]] = alloca <{ %struct.A }>*
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; CHECK: store <{ %struct.A }>* %0, <{ %struct.A }>** [[TMP_REGMEM]]
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; CHECK: [[RETVAL:\%.+]] = alloca i32, align 4
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; CHECK: [[E_PTR:\%.+]] = alloca i32, align 4
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; CHECK: [[CLEANUP_SLOT:\%.+]] = alloca i32
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; CHECK: call void (...) @llvm.frameescape(i32* %e, <{ %struct.A }>** [[TMP_REGMEM]], i32* [[RETVAL]], i32* [[CLEANUP_SLOT]])
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; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
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; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]]
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define i32 @"\01?test@@YAHUA@@@Z"(<{ %struct.A }>* inalloca) #0 {
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entry:
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%retval = alloca i32, align 4
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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%e = alloca i32, align 4
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%cleanup.dest.slot = alloca i32
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invoke void @"\01?may_throw@@YAXXZ"()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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br label %try.cont
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; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
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; CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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; CHECK-NEXT: [[RECOVER:\%recover.*]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAHUA@@@Z.catch", i32 0, void (i8*, i8*)* @"\01?test@@YAHUA@@@Z.cleanup")
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; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %cleanup]
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lpad: ; preds = %entry
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%1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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cleanup
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catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
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%2 = extractvalue { i8*, i32 } %1, 0
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store i8* %2, i8** %exn.slot
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%3 = extractvalue { i8*, i32 } %1, 1
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store i32 %3, i32* %ehselector.slot
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br label %catch.dispatch
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; CHECK-NOT: catch.dispatch:
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catch.dispatch: ; preds = %lpad
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%sel = load i32, i32* %ehselector.slot
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%4 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
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%matches = icmp eq i32 %sel, %4
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br i1 %matches, label %catch, label %ehcleanup
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; CHECK-NOT: catch:
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catch: ; preds = %catch.dispatch
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%exn = load i8*, i8** %exn.slot
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%e.i8 = bitcast i32* %e to i8*
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call void @llvm.eh.begincatch(i8* %exn, i8* %e.i8) #3
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%a = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* %0, i32 0, i32 0
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%a1 = getelementptr inbounds %struct.A, %struct.A* %a, i32 0, i32 0
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%tmp8 = load i32, i32* %a1, align 4
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%tmp9 = load i32, i32* %e, align 4
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%add = add nsw i32 %tmp8, %tmp9
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store i32 %add, i32* %retval
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store i32 1, i32* %cleanup.dest.slot
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call void @llvm.eh.endcatch() #3
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br label %cleanup
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try.cont: ; preds = %invoke.cont
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store i32 0, i32* %retval
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store i32 1, i32* %cleanup.dest.slot
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br label %cleanup
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; The cleanup block should be re-written like this.
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; CHECK: cleanup:{{[ ]+}}; preds = %[[LPAD_LABEL]], %try.cont
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; CHECK: %a2 = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* %0, i32 0, i32 0
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; CHECK: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %a2)
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; CHECK: [[TMP1:\%.+]] = load i32, i32* [[RETVAL]]
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; CHECK: ret i32 [[TMP1]]
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cleanup: ; preds = %try.cont, %catch
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%a2 = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* %0, i32 0, i32 0
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call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %a2) #3
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%tmp10 = load i32, i32* %retval
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ret i32 %tmp10
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; CHECK-NOT: ehcleanup:
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ehcleanup: ; preds = %catch.dispatch
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%a3 = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* %0, i32 0, i32 0
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call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %a3) #3
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br label %eh.resume
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; CHECK-NOT: eh.resume:
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eh.resume: ; preds = %ehcleanup
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%exn2 = load i8*, i8** %exn.slot
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%sel3 = load i32, i32* %ehselector.slot
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn2, 0
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%lpad.val4 = insertvalue { i8*, i32 } %lpad.val, i32 %sel3, 1
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resume { i8*, i32 } %lpad.val4
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; CHECK: }
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}
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; The following catch handler should be outlined.
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; CHECK: define internal i8* @"\01?test@@YAHUA@@@Z.catch"(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_E:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 0)
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; CHECK: [[E_PTR:\%.+]] = bitcast i8* [[RECOVER_E]] to i32*
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; CHECK: [[RECOVER_EH_TEMP:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 1)
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; CHECK: [[EH_TEMP:\%.+]] = bitcast i8* [[RECOVER_EH_TEMP]] to <{ %struct.A }>**
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; CHECK: [[RECOVER_RETVAL:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 2)
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; CHECK: [[RETVAL1:\%.+]] = bitcast i8* [[RECOVER_RETVAL]] to i32*
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; CHECK: [[RECOVER_CLEANUPSLOT:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 3)
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; CHECK: [[CLEANUPSLOT1:\%.+]] = bitcast i8* [[RECOVER_CLEANUPSLOT]] to i32*
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; CHECK: [[E_I8PTR:\%.+]] = bitcast i32* [[E_PTR]] to i8*
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; CHECK: [[TMP_RELOAD:\%.+]] = load <{ %struct.A }>*, <{ %struct.A }>** [[EH_TEMP]]
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; CHECK: [[RECOVER_A:\%.+]] = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* [[TMP_RELOAD]], i32 0, i32 0
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; CHECK: [[A1:\%.+]] = getelementptr inbounds %struct.A, %struct.A* [[RECOVER_A]], i32 0, i32 0
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; CHECK: [[TMP2:\%.+]] = load i32, i32* [[A1]], align 4
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; CHECK: [[TMP3:\%.+]] = load i32, i32* [[E_PTR]], align 4
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; CHECK: [[ADD:\%.+]] = add nsw i32 [[TMP2]], [[TMP3]]
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; CHECK: store i32 [[ADD]], i32* [[RETVAL1]]
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; CHECK: store i32 1, i32* [[CLEANUPSLOT1]]
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; CHECK: ret i8* blockaddress(@"\01?test@@YAHUA@@@Z", %cleanup)
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; CHECK: }
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; The following cleanup handler should be outlined.
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; CHECK: define internal void @"\01?test@@YAHUA@@@Z.cleanup"(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_EH_TEMP1:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 1)
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; CHECK: [[EH_TEMP1:\%.+]] = bitcast i8* [[RECOVER_EH_TEMP]] to <{ %struct.A }>**
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; CHECK: [[TMP_RELOAD1:\%.+]] = load <{ %struct.A }>*, <{ %struct.A }>** [[EH_TEMP1]]
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; CHECK: [[A3:\%.+]] = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* [[TMP_RELOAD1]], i32 0, i32 0
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; CHECK: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* [[A3]])
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; CHECK: ret void
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; CHECK: }
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declare void @"\01?may_throw@@YAXXZ"() #0
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declare i32 @__CxxFrameHandler3(...)
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; Function Attrs: nounwind readnone
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declare i32 @llvm.eh.typeid.for(i8*) #1
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declare void @llvm.eh.begincatch(i8*, i8*)
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declare void @llvm.eh.endcatch()
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; Function Attrs: nounwind
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declare x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A*) #2
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attributes #0 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #3 = { nounwind }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.7.0 (trunk 228868)"}
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