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compiler: skip context parameter when starting regular goroutine

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Do not store the context parameter (which is used for closures and
function pointers) in the goroutine start parameter bundle for direct
functions that don't need a context parameter. This avoids storing the
(undef) context parameter and thus makes the IR to start a new goroutine
simpler in most cases.

This reduces code size in the channel.go and goroutines.go tests.
Surprisingly, all test cases (when compiled with -target=microbit) have
a changed binary, I haven't investigated why but I suppose the codegen
is slightly different for the runtime.run function (which starts the
main goroutine).
This commit is contained in:
Ayke van Laethem
2021-05-26 00:00:25 +02:00
committed by Ron Evans
parent 3edcdb5f0d
commit c93ddb630b
3 changed files with 39 additions and 26 deletions
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compiler/compiler.go
+1 -1
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@@ -23,7 +23,7 @@ import (
// Version of the compiler pacakge. Must be incremented each time the compiler
// package changes in a way that affects the generated LLVM module.
// This version is independent of the TinyGo version number.
const Version = 9 // last change: implement reflect.New()
const Version = 10 // last change: context parameter in go wrapper
func init() {
llvm.InitializeAllTargets()