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interp: add support for constant type asserts

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Non-constant type asserts are not yet implemented, but should be
relatively easy to add at a later time. They should result in a clear
error message for now.
This commit is contained in:
Ayke van Laethem
2020-03-19 13:59:37 +01:00
committed by Ron Evans
parent 213a6240a1
commit 9222bda9c6
5 changed files with 59 additions and 0 deletions
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interp/testdata/interface.ll
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+28
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64--linux"
%runtime.typecodeID = type { %runtime.typecodeID*, i64 }
%runtime.interfaceMethodInfo = type { i8*, i64 }
%runtime.typeInInterface = type { %runtime.typecodeID*, %runtime.interfaceMethodInfo* }
@main.v1 = global i1 0
@"reflect/types.type:named:main.foo" = private constant %runtime.typecodeID { %runtime.typecodeID* @"reflect/types.type:basic:int", i64 0 }
@"reflect/types.type:basic:int" = external constant %runtime.typecodeID
@"typeInInterface:reflect/types.type:named:main.foo" = private constant %runtime.typeInInterface { %runtime.typecodeID* @"reflect/types.type:named:main.foo", %runtime.interfaceMethodInfo* null }
declare i1 @runtime.typeAssert(i64, %runtime.typecodeID*, i8*, i8*)
define void @runtime.initAll() unnamed_addr {
entry:
call void @main.init()
ret void
}
define internal void @main.init() unnamed_addr {
entry:
; Test type asserts.
%typecode = call i1 @runtime.typeAssert(i64 ptrtoint (%runtime.typeInInterface* @"typeInInterface:reflect/types.type:named:main.foo" to i64), %runtime.typecodeID* @"reflect/types.type:named:main.foo", i8* undef, i8* null)
store i1 %typecode, i1* @main.v1
ret void
}