cmd/5l: reorder some struct fields to reduce memory consumption

Valgrind Massif result when linking godoc:
On amd64:
                    old          new         -/+
mem_heap_B       185844612    175358047    -5.7%
mem_heap_extra_B    773404       773137    -0.0%

On 386/ARM:
                    old          new         -/+
mem_heap_B       141775701    131289941    -7.4%
mem_heap_extra_B    737011       736955    -0.0%

R=golang-dev, r, dave
CC=golang-dev
https://golang.org/cl/6655045

diff --git a/src/cmd/5l/l.h b/src/cmd/5l/l.h
index 68b6478581615362bfe84d11207bdf3e4cc2e6a7..36bf254e4656cd4760ba96393a90dd205e0a4a35 100644 (file)
--- a/src/cmd/5l/l.h
+++ b/src/cmd/5l/l.h
@@ -74,13 +74,12 @@ struct      Adr
                char*   u0sbig;
        } u0;
        Sym*    sym;
+       Sym*    gotype;
+       int32   offset2; // argsize
        char    type;
-       uchar   index; // not used on arm, required by ld/go.c
        char    reg;
        char    name;
-       int32   offset2; // argsize
        char    class;
-       Sym*    gotype;
 };
 
 #define        offset  u0.u0offset