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https://github.com/c64scene-ar/llvm-6502.git
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0a8ff297ad
Generate tables in the .xdata section representing what actions to take when an exception is thrown. This currently fills in state for cleanups, catch handlers are still unfinished. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233636 91177308-0d34-0410-b5e6-96231b3b80d8
100 lines
3.6 KiB
LLVM
100 lines
3.6 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
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; This test was generated from the following source:
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;
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; class SomeClass {
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; public:
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; SomeClass();
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; ~SomeClass();
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; };
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;
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; void test() {
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; SomeClass obj;
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; may_throw();
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; }
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; ModuleID = 'min-unwind.cpp'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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%class.SomeClass = type { [28 x i32] }
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; The function entry should be rewritten like this.
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; CHECK: define void @_Z4testv()
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; CHECK: entry:
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; CHECK: [[OBJ_PTR:\%.+]] = alloca %class.SomeClass, align 4
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; CHECK: call void @_ZN9SomeClassC1Ev(%class.SomeClass* [[OBJ_PTR]])
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; CHECK: call void (...)* @llvm.frameescape(%class.SomeClass* [[OBJ_PTR]])
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; CHECK: invoke void @_Z9may_throwv()
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; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]+]]
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; Function Attrs: uwtable
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define void @_Z4testv() #0 {
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entry:
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%obj = alloca %class.SomeClass, align 4
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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call void @_ZN9SomeClassC1Ev(%class.SomeClass* %obj)
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invoke void @_Z9may_throwv()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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call void @_ZN9SomeClassD1Ev(%class.SomeClass* %obj)
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ret void
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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: [[RECOVER:\%.+]] = call i8* (...)* @llvm.eh.actions(i32 0, void (i8*, i8*)* @_Z4testv.cleanup)
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; CHECK-NEXT: indirectbr i8* [[RECOVER]], []
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lpad: ; preds = %entry
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%tmp = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
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cleanup
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%tmp1 = extractvalue { i8*, i32 } %tmp, 0
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store i8* %tmp1, i8** %exn.slot
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%tmp2 = extractvalue { i8*, i32 } %tmp, 1
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store i32 %tmp2, i32* %ehselector.slot
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call void @_ZN9SomeClassD1Ev(%class.SomeClass* %obj)
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br label %eh.resume
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; CHECK-NOT: eh.resume:
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eh.resume: ; preds = %lpad
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%exn = load i8*, i8** %exn.slot
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%sel = load i32, i32* %ehselector.slot
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn, 0
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%lpad.val2 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1
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resume { i8*, i32 } %lpad.val2
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; CHECK: }
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}
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; This cleanup handler should be outlined.
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; CHECK: define internal void @_Z4testv.cleanup(i8*, i8*)
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; CHECK: entry:
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; CHECK: [[RECOVER_OBJ:\%.+]] = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1, i32 0)
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; CHECK: [[OBJ_PTR1:\%.+]] = bitcast i8* [[RECOVER_OBJ]] to %class.SomeClass*
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; CHECK: call void @_ZN9SomeClassD1Ev(%class.SomeClass* [[OBJ_PTR1]])
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; CHECK: ret void
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; CHECK: }
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declare void @_ZN9SomeClassC1Ev(%class.SomeClass*) #1
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declare void @_Z9may_throwv() #1
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declare i32 @__CxxFrameHandler3(...)
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declare void @_ZN9SomeClassD1Ev(%class.SomeClass*) #1
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attributes #0 = { uwtable "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 = { "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 #2 = { noinline noreturn nounwind }
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attributes #3 = { noreturn nounwind }
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attributes #4 = { nounwind }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.7.0 (trunk 226027)"}
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