x86: refine when to trigger optimizations

[deliverable/binutils-gdb.git] / gas / config / tc-i386.c

diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 645fd38a12c1de6d86dec292a9d87aadc1c2bc79..2c087e42e0de4486ce1b89d6c2d1b1d36ded1a9e 100644 (file)
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -3990,13 +3990,13 @@ optimize_encoding (void)
   unsigned int j;
 
   if (optimize_for_space
+      && !is_any_vex_encoding (&i.tm)
       && i.reg_operands == 1
       && i.imm_operands == 1
       && !i.types[1].bitfield.byte
       && i.op[0].imms->X_op == O_constant
       && fits_in_imm7 (i.op[0].imms->X_add_number)
-      && ((i.tm.base_opcode == 0xa8
-          && i.tm.extension_opcode == None)
+      && (i.tm.base_opcode == 0xa8
          || (i.tm.base_opcode == 0xf6
              && i.tm.extension_opcode == 0x0)))
     {
@@ -4022,6 +4022,7 @@ optimize_encoding (void)
        }
     }
   else if (flag_code == CODE_64BIT
+          && !is_any_vex_encoding (&i.tm)
           && ((i.types[1].bitfield.qword
                && i.reg_operands == 1
                && i.imm_operands == 1
@@ -4030,9 +4031,8 @@ optimize_encoding (void)
                     && i.tm.extension_opcode == None
                     && fits_in_unsigned_long (i.op[0].imms->X_add_number))
                    || (fits_in_imm31 (i.op[0].imms->X_add_number)
-                       && (((i.tm.base_opcode == 0x24
-                             || i.tm.base_opcode == 0xa8)
-                            && i.tm.extension_opcode == None)
+                       && ((i.tm.base_opcode == 0x24
+                            || i.tm.base_opcode == 0xa8)
                            || (i.tm.base_opcode == 0x80
                                && i.tm.extension_opcode == 0x4)
                            || ((i.tm.base_opcode == 0xf6
@@ -4044,13 +4044,11 @@ optimize_encoding (void)
               || (i.types[0].bitfield.qword
                   && ((i.reg_operands == 2
                        && i.op[0].regs == i.op[1].regs
-                       && ((i.tm.base_opcode == 0x30
-                            || i.tm.base_opcode == 0x28)
-                           && i.tm.extension_opcode == None))
+                       && (i.tm.base_opcode == 0x30
+                           || i.tm.base_opcode == 0x28))
                       || (i.reg_operands == 1
                           && i.operands == 1
-                          && i.tm.base_opcode == 0x30
-                          && i.tm.extension_opcode == None)))))
+                          && i.tm.base_opcode == 0x30)))))
     {
       /* Optimize: -O:
           andq $imm31, %r64   -> andl $imm31, %r32
@@ -4091,6 +4089,7 @@ optimize_encoding (void)
     }
   else if (optimize > 1
           && !optimize_for_space
+          && !is_any_vex_encoding (&i.tm)
           && i.reg_operands == 2
           && i.op[0].regs == i.op[1].regs
           && ((i.tm.base_opcode & ~(Opcode_D | 1)) == 0x8