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-rw-r--r--test/CodeGen/WinEH/cppeh-inalloca.ll199
1 files changed, 199 insertions, 0 deletions
diff --git a/test/CodeGen/WinEH/cppeh-inalloca.ll b/test/CodeGen/WinEH/cppeh-inalloca.ll
new file mode 100644
index 0000000..f3f3631
--- /dev/null
+++ b/test/CodeGen/WinEH/cppeh-inalloca.ll
@@ -0,0 +1,199 @@
+; RUN: opt -mtriple=i386-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
+
+; This test is built from the following code:
+; struct A {
+; A(int a);
+; A(const A &o);
+; ~A();
+; int a;
+; };
+;
+; void may_throw();
+;
+; int test(A a) {
+; try {
+; may_throw();
+; }
+; catch (int e) {
+; return a.a + e;
+; }
+; return 0;
+; }
+;
+; The test was built for a 32-bit Windows target and then the reference to
+; the inalloca instruction was manually sunk into the landingpad.
+
+; ModuleID = 'cppeh-inalloca.cpp'
+target datalayout = "e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32"
+target triple = "i386-pc-windows-msvc"
+
+%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
+%struct.A = type { 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 i32 @"\01?test@@YAHUA@@@Z"(<{ %struct.A }>* inalloca) #0 {
+; CHECK: entry:
+; CHECK: [[TMP_REGMEM:\%.+]] = alloca <{ %struct.A }>*
+; CHECK: [[TMP:\%.+]] = select i1 true, <{ %struct.A }>* %0, <{ %struct.A }>* undef
+; CHECK: store <{ %struct.A }>* [[TMP]], <{ %struct.A }>** [[TMP_REGMEM]]
+; CHECK: [[RETVAL:\%.+]] = alloca i32, align 4
+; CHECK: [[E_PTR:\%.+]] = alloca i32, align 4
+; CHECK: [[CLEANUP_SLOT:\%.+]] = alloca i32
+; CHECK: call void (...)* @llvm.frameescape(i32* %e, <{ %struct.A }>** [[TMP_REGMEM]], i32* [[RETVAL]], i32* [[CLEANUP_SLOT]])
+; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
+; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]]
+
+define i32 @"\01?test@@YAHUA@@@Z"(<{ %struct.A }>* inalloca) #0 {
+entry:
+ %retval = alloca i32, align 4
+ %exn.slot = alloca i8*
+ %ehselector.slot = alloca i32
+ %e = alloca i32, align 4
+ %cleanup.dest.slot = alloca i32
+ invoke void @"\01?may_throw@@YAXXZ"()
+ to label %invoke.cont unwind label %lpad
+
+invoke.cont: ; preds = %entry
+ br label %try.cont
+
+; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
+; CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+; CHECK-NEXT: [[RECOVER:\%recover.*]] = call i8* (...)* @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32* %e, i8* (i8*, i8*)* @"\01?test@@YAHUA@@@Z.catch", i32 0, void (i8*, i8*)* @"\01?test@@YAHUA@@@Z.cleanup")
+; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %cleanup]
+
+lpad: ; preds = %entry
+ %1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+ cleanup
+ catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
+ %2 = extractvalue { i8*, i32 } %1, 0
+ store i8* %2, i8** %exn.slot
+ %3 = extractvalue { i8*, i32 } %1, 1
+ store i32 %3, i32* %ehselector.slot
+ br label %catch.dispatch
+
+; CHECK-NOT: catch.dispatch:
+
+catch.dispatch: ; preds = %lpad
+ %sel = load i32, i32* %ehselector.slot
+ %4 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
+ %matches = icmp eq i32 %sel, %4
+ br i1 %matches, label %catch, label %ehcleanup
+
+; CHECK-NOT: catch:
+
+catch: ; preds = %catch.dispatch
+ %exn = load i8*, i8** %exn.slot
+ %e.i8 = bitcast i32* %e to i8*
+ call void @llvm.eh.begincatch(i8* %exn, i8* %e.i8) #3
+ %a = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* %0, i32 0, i32 0
+ %a1 = getelementptr inbounds %struct.A, %struct.A* %a, i32 0, i32 0
+ %tmp8 = load i32, i32* %a1, align 4
+ %tmp9 = load i32, i32* %e, align 4
+ %add = add nsw i32 %tmp8, %tmp9
+ store i32 %add, i32* %retval
+ store i32 1, i32* %cleanup.dest.slot
+ call void @llvm.eh.endcatch() #3
+ br label %cleanup
+
+try.cont: ; preds = %invoke.cont
+ store i32 0, i32* %retval
+ store i32 1, i32* %cleanup.dest.slot
+ br label %cleanup
+
+; The cleanup block should be re-written like this.
+; CHECK: cleanup:{{[ ]+}}; preds = %[[LPAD_LABEL]], %try.cont
+; CHECK-NOT: %a2 = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* %0, i32 0, i32 0
+; CHECK: [[TMP_RELOAD:\%.+]] = load volatile <{ %struct.A }>*, <{ %struct.A }>** [[TMP_REGMEM]]
+; CHECK: [[A2:\%.+]] = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* [[TMP_RELOAD]], i32 0, i32 0
+; CHECK: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* [[A2]])
+; CHECK: [[TMP1:\%.+]] = load i32, i32* [[RETVAL]]
+; CHECK: ret i32 [[TMP1]]
+
+cleanup: ; preds = %try.cont, %catch
+ %a2 = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* %0, i32 0, i32 0
+ call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %a2) #3
+ %tmp10 = load i32, i32* %retval
+ ret i32 %tmp10
+
+; CHECK-NOT: ehcleanup:
+
+ehcleanup: ; preds = %catch.dispatch
+ %a3 = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* %0, i32 0, i32 0
+ call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* %a3) #3
+ br label %eh.resume
+
+; CHECK-NOT: eh.resume:
+
+eh.resume: ; preds = %ehcleanup
+ %exn2 = load i8*, i8** %exn.slot
+ %sel3 = load i32, i32* %ehselector.slot
+ %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn2, 0
+ %lpad.val4 = insertvalue { i8*, i32 } %lpad.val, i32 %sel3, 1
+ resume { i8*, i32 } %lpad.val4
+
+; CHECK: }
+}
+
+; The following catch handler should be outlined.
+; CHECK: define internal i8* @"\01?test@@YAHUA@@@Z.catch"(i8*, i8*) {
+; CHECK: entry:
+; CHECK: [[RECOVER_E:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 0)
+; CHECK: [[E_PTR:\%.+]] = bitcast i8* [[RECOVER_E]] to i32*
+; CHECK: [[RECOVER_EH_TEMP:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 1)
+; CHECK: [[EH_TEMP:\%.+]] = bitcast i8* [[RECOVER_EH_TEMP]] to <{ %struct.A }>**
+; CHECK: [[TMP_RELOAD:\%.+]] = load <{ %struct.A }>*, <{ %struct.A }>** [[EH_TEMP]]
+; CHECK: [[RECOVER_RETVAL:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 2)
+; CHECK: [[RETVAL1:\%.+]] = bitcast i8* [[RECOVER_RETVAL]] to i32*
+; CHECK: [[RECOVER_CLEANUPSLOT:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 3)
+; CHECK: [[CLEANUPSLOT1:\%.+]] = bitcast i8* [[RECOVER_CLEANUPSLOT]] to i32*
+; CHECK: [[E_I8PTR:\%.+]] = bitcast i32* [[E_PTR]] to i8*
+; CHECK: [[RECOVER_A:\%.+]] = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* [[TMP_RELOAD]], i32 0, i32 0
+; CHECK: [[A1:\%.+]] = getelementptr inbounds %struct.A, %struct.A* [[RECOVER_A]], i32 0, i32 0
+; CHECK: [[TMP2:\%.+]] = load i32, i32* [[A1]], align 4
+; CHECK: [[TMP3:\%.+]] = load i32, i32* [[E_PTR]], align 4
+; CHECK: [[ADD:\%.+]] = add nsw i32 [[TMP2]], [[TMP3]]
+; CHECK: store i32 [[ADD]], i32* [[RETVAL1]]
+; CHECK: store i32 1, i32* [[CLEANUPSLOT1]]
+; CHECK: ret i8* blockaddress(@"\01?test@@YAHUA@@@Z", %cleanup)
+; CHECK: }
+
+; The following cleanup handler should be outlined.
+; CHECK: define internal void @"\01?test@@YAHUA@@@Z.cleanup"(i8*, i8*) {
+; CHECK: entry:
+; CHECK: [[RECOVER_EH_TEMP1:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (i32 (<{ %struct.A }>*)* @"\01?test@@YAHUA@@@Z" to i8*), i8* %1, i32 1)
+; CHECK: [[EH_TEMP1:\%.+]] = bitcast i8* [[RECOVER_EH_TEMP]] to <{ %struct.A }>**
+; CHECK: [[TMP_RELOAD1:\%.+]] = load <{ %struct.A }>*, <{ %struct.A }>** [[EH_TEMP1]]
+; CHECK: [[A3:\%.+]] = getelementptr inbounds <{ %struct.A }>, <{ %struct.A }>* [[TMP_RELOAD1]], i32 0, i32 0
+; CHECK: call x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A* [[A3]])
+; CHECK: ret void
+; CHECK: }
+
+declare void @"\01?may_throw@@YAXXZ"() #0
+
+declare i32 @__CxxFrameHandler3(...)
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.eh.typeid.for(i8*) #1
+
+declare void @llvm.eh.begincatch(i8*, i8*)
+
+declare void @llvm.eh.endcatch()
+
+; Function Attrs: nounwind
+declare x86_thiscallcc void @"\01??1A@@QAE@XZ"(%struct.A*) #2
+
+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" }
+attributes #1 = { nounwind readnone }
+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" }
+attributes #3 = { nounwind }
+
+!llvm.ident = !{!0}
+
+!0 = !{!"clang version 3.7.0 (trunk 228868)"}
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