compiler, runtime: copy string code from Go 1.7

    
    Add compiler support for turning concatenating strings into a call to
    a runtime function that takes the appropriate number of arguments.
    
    Rename some local variables in mgc0.c to avoid macros that the new
    rune.go causes to appear in runtime.inc.
    
    Reviewed-on: https://go-review.googlesource.com/30827

From-SVN: r241074

1 files changed, 0 insertions, 69 deletions

diff --git a/libgo/runtime/go-int-to-string.c b/libgo/runtime/go-int-to-string.c
deleted file mode 100644
index d90b1dd..0000000
--- a/libgo/runtime/go-int-to-string.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/* go-int-to-string.c -- convert an integer to a string in Go.
-
-   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.  */
-
-#include "runtime.h"
-#include "arch.h"
-#include "malloc.h"
-
-String
-__go_int_to_string (intgo v)
-{
-  char buf[4];
-  int len;
-  unsigned char *retdata;
-  String ret;
-
-  /* A negative value is not valid UTF-8; turn it into the replacement
-     character.  */
-  if (v < 0)
-    v = 0xfffd;
-
-  if (v <= 0x7f)
-    {
-      buf[0] = v;
-      len = 1;
-    }
-  else if (v <= 0x7ff)
-    {
-      buf[0] = 0xc0 + (v >> 6);
-      buf[1] = 0x80 + (v & 0x3f);
-      len = 2;
-    }
-  else
-    {
-      /* If the value is out of range for UTF-8, turn it into the
-	 "replacement character".  */
-      if (v > 0x10ffff)
-	v = 0xfffd;
-      /* If the value is a surrogate pair, which is invalid in UTF-8,
-	 turn it into the replacement character.  */
-      if (v >= 0xd800 && v < 0xe000)
-	v = 0xfffd;
-
-      if (v <= 0xffff)
-	{
-	  buf[0] = 0xe0 + (v >> 12);
-	  buf[1] = 0x80 + ((v >> 6) & 0x3f);
-	  buf[2] = 0x80 + (v & 0x3f);
-	  len = 3;
-	}
-      else
-	{
-	  buf[0] = 0xf0 + (v >> 18);
-	  buf[1] = 0x80 + ((v >> 12) & 0x3f);
-	  buf[2] = 0x80 + ((v >> 6) & 0x3f);
-	  buf[3] = 0x80 + (v & 0x3f);
-	  len = 4;
-	}
-    }
-
-  retdata = runtime_mallocgc (len, 0, FlagNoScan);
-  __builtin_memcpy (retdata, buf, len);
-  ret.str = retdata;
-  ret.len = len;
-
-  return ret;
-}