57271d7eaa
There is no good reason for func values to refer to interface type codes. The only thing they need is a stable identifier for function signatures, which is easily created as a new kind of globals. Decoupling makes it easier to change interface related code.
47 строки
1,8 КиБ
LLVM
47 строки
1,8 КиБ
LLVM
; ModuleID = 'func.go'
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source_filename = "func.go"
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target datalayout = "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128"
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target triple = "i686--linux"
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%runtime.funcValueWithSignature = type { i32, i8* }
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@"reflect/types.funcid:func:{basic:int}{}" = external constant i8
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@"main.someFunc$withSignature" = linkonce_odr constant %runtime.funcValueWithSignature { i32 ptrtoint (void (i32, i8*, i8*)* @main.someFunc to i32), i8* @"reflect/types.funcid:func:{basic:int}{}" }
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declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
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define hidden void @main.init(i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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ret void
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}
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define hidden void @main.foo(i8* %callback.context, i32 %callback.funcptr, i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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%0 = call i32 @runtime.getFuncPtr(i8* %callback.context, i32 %callback.funcptr, i8* nonnull @"reflect/types.funcid:func:{basic:int}{}", i8* undef, i8* null)
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%1 = icmp eq i32 %0, 0
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br i1 %1, label %fpcall.throw, label %fpcall.next
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fpcall.throw: ; preds = %entry
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call void @runtime.nilPanic(i8* undef, i8* null)
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unreachable
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fpcall.next: ; preds = %entry
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%2 = inttoptr i32 %0 to void (i32, i8*, i8*)*
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call void %2(i32 3, i8* %callback.context, i8* undef)
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ret void
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}
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declare i32 @runtime.getFuncPtr(i8*, i32, i8* dereferenceable_or_null(1), i8*, i8*)
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declare void @runtime.nilPanic(i8*, i8*)
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define hidden void @main.bar(i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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call void @main.foo(i8* undef, i32 ptrtoint (%runtime.funcValueWithSignature* @"main.someFunc$withSignature" to i32), i8* undef, i8* undef)
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ret void
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}
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define hidden void @main.someFunc(i32 %arg0, i8* %context, i8* %parentHandle) unnamed_addr {
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entry:
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ret void
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}
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