x86: remove indirection from bx[] and di_si[]

The longest register name is 3 characters (plus a nul one), so using a
4- or 8-byte pointer to get at it is neither space nor time efficient.
Embed the names right into the array. For PIE this also slightly reduces
the number of base relocations in the final image.

diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 3b00a1bc612ace185769d1437eabb938c24d77ca..604a6355ebae7159cc6737ccdc2ed62fb0d6547d 100644 (file)
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -12250,13 +12250,13 @@ i386_index_check (const char *operand_string)
       /* Memory operands of string insns are special in that they only allow
         a single register (rDI, rSI, or rBX) as their memory address.  */
       const reg_entry *expected_reg;
-      static const char *di_si[][2] =
+      static const char di_si[][2][4] =
        {
          { "esi", "edi" },
          { "si", "di" },
          { "rsi", "rdi" }
        };
-      static const char *bx[] = { "ebx", "bx", "rbx" };
+      static const char bx[][4] = { "ebx", "bx", "rbx" };
 
       kind = "string address";