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compiler: refactor method names

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This commit includes two changes:

  * It makes unexported interface methods package-private, so that it's
    not possible to type-assert on an unexported method in a different
    package.
  * It makes the globals used to identify interface methods defined
    globals, so that they can (eventually) be left in the program for an
    eventual non-LTO build mode.
This commit is contained in:
Ayke van Laethem
2021-06-04 14:43:25 +02:00
committed by Ron Evans
parent 52d640967b
commit f2e8d7112c
8 changed files with 47 additions and 32 deletions
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transform/testdata/interface.ll
Vendored
+6 -6
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@@ -8,11 +8,11 @@ target triple = "armv7m-none-eabi"
@"reflect/types.typeid:basic:uint8" = external constant i8
@"reflect/types.typeid:basic:int16" = external constant i8
@"reflect/types.type:basic:int" = private constant %runtime.typecodeID zeroinitializer
@"func NeverImplementedMethod()" = external constant i8
@"Unmatched$interface" = private constant [1 x i8*] [i8* @"func NeverImplementedMethod()"]
@"func Double() int" = external constant i8
@"Doubler$interface" = private constant [1 x i8*] [i8* @"func Double() int"]
@"Number$methodset" = private constant [1 x %runtime.interfaceMethodInfo] [%runtime.interfaceMethodInfo { i8* @"func Double() int", i32 ptrtoint (i32 (i8*, i8*)* @"(Number).Double$invoke" to i32) }]
@"reflect/methods.NeverImplementedMethod()" = linkonce_odr constant i8 0
@"Unmatched$interface" = private constant [1 x i8*] [i8* @"reflect/methods.NeverImplementedMethod()"]
@"reflect/methods.Double() int" = linkonce_odr constant i8 0
@"Doubler$interface" = private constant [1 x i8*] [i8* @"reflect/methods.Double() int"]
@"Number$methodset" = private constant [1 x %runtime.interfaceMethodInfo] [%runtime.interfaceMethodInfo { i8* @"reflect/methods.Double() int", i32 ptrtoint (i32 (i8*, i8*)* @"(Number).Double$invoke" to i32) }]
@"reflect/types.type:named:Number" = private constant %runtime.typecodeID { %runtime.typecodeID* @"reflect/types.type:basic:int", i32 0, %runtime.interfaceMethodInfo* getelementptr inbounds ([1 x %runtime.interfaceMethodInfo], [1 x %runtime.interfaceMethodInfo]* @"Number$methodset", i32 0, i32 0) }
declare i1 @runtime.interfaceImplements(i32, i8**)
@@ -48,7 +48,7 @@ typeswitch.notUnmatched:
br i1 %isDoubler, label %typeswitch.Doubler, label %typeswitch.notDoubler
typeswitch.Doubler:
%doubler.func = call i32 @runtime.interfaceMethod(i32 %typecode, i8** getelementptr inbounds ([1 x i8*], [1 x i8*]* @"Doubler$interface", i32 0, i32 0), i8* nonnull @"func Double() int")
%doubler.func = call i32 @runtime.interfaceMethod(i32 %typecode, i8** getelementptr inbounds ([1 x i8*], [1 x i8*]* @"Doubler$interface", i32 0, i32 0), i8* nonnull @"reflect/methods.Double() int")
%doubler.func.cast = inttoptr i32 %doubler.func to i32 (i8*, i8*)*
%doubler.result = call i32 %doubler.func.cast(i8* %value, i8* null)
call void @runtime.printint32(i32 %doubler.result)