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compiler: simplify interface lowering

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This commit simplifies the IR a little bit: instead of calling
pseudo-functions runtime.interfaceImplements and
runtime.interfaceMethod, real declared functions are being called that
are then defined in the interface lowering pass. This should simplify
the interaction between various transformation passes. It also reduces
the number of lines of code, which is generally a good thing.
This commit is contained in:
Ayke van Laethem
2021-10-24 14:29:40 +02:00
committed by Ron Evans
parent 90076f9401
commit a4afc3b4b0
14 changed files with 355 additions and 397 deletions
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transform/testdata/interface.ll
Vendored
+19 -15
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@@ -1,7 +1,7 @@
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "armv7m-none-eabi"
%runtime.typecodeID = type { %runtime.typecodeID*, i32, %runtime.interfaceMethodInfo* }
%runtime.typecodeID = type { %runtime.typecodeID*, i32, %runtime.interfaceMethodInfo*, %runtime.typecodeID*, i32 }
%runtime.interfaceMethodInfo = type { i8*, i32 }
@"reflect/types.type:basic:uint8" = private constant %runtime.typecodeID zeroinitializer
@@ -9,15 +9,11 @@ target triple = "armv7m-none-eabi"
@"reflect/types.typeid:basic:int16" = external constant i8
@"reflect/types.type:basic:int" = private constant %runtime.typecodeID zeroinitializer
@"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$methodset", i32 0, i32 0) }
@"Number$methodset" = private constant [1 x %runtime.interfaceMethodInfo] [%runtime.interfaceMethodInfo { i8* @"reflect/methods.Double() int", i32 ptrtoint (i32 (i8*, 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), %runtime.typecodeID* null, i32 0 }
declare i1 @runtime.interfaceImplements(i32, i8**)
declare i1 @runtime.typeAssert(i32, i8*)
declare i32 @runtime.interfaceMethod(i32, i8**, i8*)
declare void @runtime.printuint8(i8)
declare void @runtime.printint16(i16)
declare void @runtime.printint32(i32)
@@ -34,7 +30,7 @@ define void @printInterfaces() {
}
define void @printInterface(i32 %typecode, i8* %value) {
%isUnmatched = call i1 @runtime.interfaceImplements(i32 %typecode, i8** getelementptr inbounds ([1 x i8*], [1 x i8*]* @"Unmatched$interface", i32 0, i32 0))
%isUnmatched = call i1 @Unmatched$typeassert(i32 %typecode)
br i1 %isUnmatched, label %typeswitch.Unmatched, label %typeswitch.notUnmatched
typeswitch.Unmatched:
@@ -44,13 +40,11 @@ typeswitch.Unmatched:
ret void
typeswitch.notUnmatched:
%isDoubler = call i1 @runtime.interfaceImplements(i32 %typecode, i8** getelementptr inbounds ([1 x i8*], [1 x i8*]* @"Doubler$interface", i32 0, i32 0))
%isDoubler = call i1 @Doubler$typeassert(i32 %typecode)
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$interface", i32 0, i32 0), i8* nonnull @"reflect/methods.Double() int")
%doubler.func.cast = inttoptr i32 %doubler.func to i32 (i8*, i8*)*
%doubler.result = call i32 %doubler.func.cast(i8* %value, i8* null)
%doubler.result = call i32 @"Doubler.Double$invoke"(i8* %value, i32 %typecode, i8* undef, i8* undef)
call void @runtime.printint32(i32 %doubler.result)
ret void
@@ -79,13 +73,23 @@ typeswitch.notInt16:
ret void
}
define i32 @"(Number).Double"(i32 %receiver, i8* %parentHandle) {
define i32 @"(Number).Double"(i32 %receiver, i8* %context, i8* %parentHandle) {
%ret = mul i32 %receiver, 2
ret i32 %ret
}
define i32 @"(Number).Double$invoke"(i8* %receiverPtr, i8* %parentHandle) {
define i32 @"(Number).Double$invoke"(i8* %receiverPtr, i8* %context, i8* %parentHandle) {
%receiver = ptrtoint i8* %receiverPtr to i32
%ret = call i32 @"(Number).Double"(i32 %receiver, i8* null)
%ret = call i32 @"(Number).Double"(i32 %receiver, i8* undef, i8* null)
ret i32 %ret
}
declare i32 @"Doubler.Double$invoke"(i8* %receiver, i32 %typecode, i8* %context, i8* %parentHandle) #0
declare i1 @Doubler$typeassert(i32 %typecode) #1
declare i1 @Unmatched$typeassert(i32 %typecode) #2
attributes #0 = { "tinygo-invoke"="reflect/methods.Double() int" "tinygo-methods"="reflect/methods.Double() int" }
attributes #1 = { "tinygo-methods"="reflect/methods.Double() int" }
attributes #2 = { "tinygo-methods"="reflect/methods.NeverImplementedMethod()" }