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cmd/compile: propagate pragmas from generic function to stenciled implementation

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Change-Id: I28a1910890659aaa449ffd2a847cd4ced5a8600d
Reviewed-on: https://go-review.googlesource.com/c/go/+/310211
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
This commit is contained in:
Keith Randall 2021-04-14 16:18:58 -07:00
parent bf634c76b2
commit 083a26c7d2
2 changed files with 20 additions and 0 deletions
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1
src/cmd/compile/internal/noder/stencil.go
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@ -270,6 +270,7 @@ func (g *irgen) genericSubst(newsym *types.Sym, nameNode *ir.Name, targs []ir.No
gf := nameNode.Func
// Pos of the instantiated function is same as the generic function
newf := ir.NewFunc(gf.Pos())
newf.Pragma = gf.Pragma // copy over pragmas from generic function to stenciled implementation.
newf.Nname = ir.NewNameAt(gf.Pos(), newsym)
newf.Nname.Func = newf
newf.Nname.Defn = newf

19
test/typeparam/pragma.go Normal file
View File

@ -0,0 +1,19 @@
// errorcheck -0 -m -G=3
// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Make sure the go:noinline pragma makes it from a
// generic function to any of its stenciled instances.
package main
//go:noinline
func f[T any](x T) T {
return x
}
func main() { // ERROR "can inline main"
println(f(5))
}