1 files changed, 26 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ir/cfg.go b/src/cmd/compile/internal/ir/cfg.go
new file mode 100644
index 0000000..49e1ed3
--- /dev/null
+++ b/src/cmd/compile/internal/ir/cfg.go
@@ -0,0 +1,26 @@
+// Copyright 2009 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.
+
+package ir
+
+var (
+	// MaxStackVarSize is the maximum size variable which we will allocate on the stack.
+	// This limit is for explicit variable declarations like "var x T" or "x := ...".
+	// Note: the flag smallframes can update this value.
+	MaxStackVarSize = int64(10 * 1024 * 1024)
+
+	// MaxImplicitStackVarSize is the maximum size of implicit variables that we will allocate on the stack.
+	//   p := new(T)          allocating T on the stack
+	//   p := &T{}            allocating T on the stack
+	//   s := make([]T, n)    allocating [n]T on the stack
+	//   s := []byte("...")   allocating [n]byte on the stack
+	// Note: the flag smallframes can update this value.
+	MaxImplicitStackVarSize = int64(64 * 1024)
+
+	// MaxSmallArraySize is the maximum size of an array which is considered small.
+	// Small arrays will be initialized directly with a sequence of constant stores.
+	// Large arrays will be initialized by copying from a static temp.
+	// 256 bytes was chosen to minimize generated code + statictmp size.
+	MaxSmallArraySize = int64(256)
+)