Replace "if (x) free (x)" with "free (x)", gas

	* atof-generic.c: Replace "if (x) free (x)" with "free (x)"
	throughout.
	* config/obj-elf.c: Likewise.
	* config/tc-aarch64.c: Likewise.
	* config/tc-arm.c: Likewise.
	* config/tc-m68k.c: Likewise.
	* config/tc-nios2.c: Likewise.
	* config/tc-tic30.c: Likewise.
	* ecoff.c: Likewise.
	* read.c: Likewise.
	* stabs.c: Likewise.
	* symbols.c: Likewise.
	* testsuite/gas/all/test-gen.c: Likewise.

13 files changed, 41 insertions, 52 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 05ba3e9..1ff090a 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,19 @@
+2020-05-21  Alan Modra  <amodra@gmail.com>
+
+	* atof-generic.c: Replace "if (x) free (x)" with "free (x)"
+	throughout.
+	* config/obj-elf.c: Likewise.
+	* config/tc-aarch64.c: Likewise.
+	* config/tc-arm.c: Likewise.
+	* config/tc-m68k.c: Likewise.
+	* config/tc-nios2.c: Likewise.
+	* config/tc-tic30.c: Likewise.
+	* ecoff.c: Likewise.
+	* read.c: Likewise.
+	* stabs.c: Likewise.
+	* symbols.c: Likewise.
+	* testsuite/gas/all/test-gen.c: Likewise.
+
 2020-05-20  Nelson Chu  <nelson.chu@sifive.com>
 
 	* testsuite/gas/riscv/priv-reg-fail-read-only-01.s: Updated.
diff --git a/gas/atof-generic.c b/gas/atof-generic.c
index 6dfd61b..96a12f7 100644
--- a/gas/atof-generic.c
+++ b/gas/atof-generic.c
@@ -611,10 +611,8 @@ atof_generic (/* return pointer to just AFTER number we read.  */
       /* Assert sign of the number we made is '+'.  */
       address_of_generic_floating_point_number->sign = digits_sign_char;
 
-      if (temporary_binary_low)
-	free (temporary_binary_low);
-      if (power_binary_low)
-	free (power_binary_low);
+      free (temporary_binary_low);
+      free (power_binary_low);
       free (digits_binary_low);
     }
   return return_value;
diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c
index 4bdddc9..de22b5a 100644
--- a/gas/config/obj-elf.c
+++ b/gas/config/obj-elf.c
@@ -2021,8 +2021,7 @@ elf_copy_symbol_attributes (symbolS *dest, symbolS *src)
     }
   else
     {
-      if (destelf->size != NULL)
-	free (destelf->size);
+      free (destelf->size);
       destelf->size = NULL;
     }
   S_SET_SIZE (dest, S_GET_SIZE (src));
@@ -2124,11 +2123,8 @@ obj_elf_size (int ignore ATTRIBUTE_UNUSED)
   if (exp.X_op == O_constant)
     {
       S_SET_SIZE (sym, exp.X_add_number);
-      if (symbol_get_obj (sym)->size)
-	{
-	  xfree (symbol_get_obj (sym)->size);
-	  symbol_get_obj (sym)->size = NULL;
-	}
+      xfree (symbol_get_obj (sym)->size);
+      symbol_get_obj (sym)->size = NULL;
     }
   else
     {
diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index da786ba..728fd10 100644
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -8269,8 +8269,7 @@ md_apply_fix (fixS * fixP, valueT * valP, segT seg)
   /* Free the allocated the struct aarch64_inst.
      N.B. currently there are very limited number of fix-up types actually use
      this field, so the impact on the performance should be minimal .  */
-  if (fixP->tc_fix_data.inst != NULL)
-    free (fixP->tc_fix_data.inst);
+  free (fixP->tc_fix_data.inst);
 
   return;
 }
@@ -9557,8 +9556,7 @@ aarch64_elf_copy_symbol_attributes (symbolS *dest, symbolS *src)
     }
   else
     {
-      if (destelf->size != NULL)
-	free (destelf->size);
+      free (destelf->size);
       destelf->size = NULL;
     }
   S_SET_SIZE (dest, S_GET_SIZE (src));
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index bc0b3a4..a693006 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -2899,8 +2899,7 @@ s_unreq (int a ATTRIBUTE_UNUSED)
 
 	  hash_delete (arm_reg_hsh, name, FALSE);
 	  free ((char *) reg->name);
-	  if (reg->neon)
-	    free (reg->neon);
+	  free (reg->neon);
 	  free (reg);
 
 	  /* Also locate the all upper case and all lower case versions.
@@ -2915,8 +2914,7 @@ s_unreq (int a ATTRIBUTE_UNUSED)
 	    {
 	      hash_delete (arm_reg_hsh, nbuf, FALSE);
 	      free ((char *) reg->name);
-	      if (reg->neon)
-		free (reg->neon);
+	      free (reg->neon);
 	      free (reg);
 	    }
 
@@ -2927,8 +2925,7 @@ s_unreq (int a ATTRIBUTE_UNUSED)
 	    {
 	      hash_delete (arm_reg_hsh, nbuf, FALSE);
 	      free ((char *) reg->name);
-	      if (reg->neon)
-		free (reg->neon);
+	      free (reg->neon);
 	      free (reg);
 	    }
 
diff --git a/gas/config/tc-m68k.c b/gas/config/tc-m68k.c
index 490df5d..cbb227a 100644
--- a/gas/config/tc-m68k.c
+++ b/gas/config/tc-m68k.c
@@ -6135,8 +6135,7 @@ pop_mri_control (void)
 
   n = mri_control_stack;
   mri_control_stack = n->outer;
-  if (n->top != NULL)
-    free (n->top);
+  free (n->top);
   free (n->next);
   free (n->bottom);
   free (n);
diff --git a/gas/config/tc-nios2.c b/gas/config/tc-nios2.c
index 52cfb98..aeca351 100644
--- a/gas/config/tc-nios2.c
+++ b/gas/config/tc-nios2.c
@@ -3230,11 +3230,8 @@ nios2_insert_arg (char **parsed_args, const char *insert, int num,
 static void
 nios2_free_arg (char **parsed_args, int num ATTRIBUTE_UNUSED, int start)
 {
-  if (parsed_args[start])
-    {
-      free (parsed_args[start]);
-      parsed_args[start] = NULL;
-    }
+  free (parsed_args[start]);
+  parsed_args[start] = NULL;
 }
 
 /* This function swaps the pseudo-op for a real op.  */
diff --git a/gas/config/tc-tic30.c b/gas/config/tc-tic30.c
index f1954d0..c31c760 100644
--- a/gas/config/tc-tic30.c
+++ b/gas/config/tc-tic30.c
@@ -1997,8 +1997,7 @@ md_assemble (char *line)
 
     for (i = 0; i < insn.operands; i++)
       {
-	if (insn.operand_type[i]->immediate.label)
-	  free (insn.operand_type[i]->immediate.label);
+	free (insn.operand_type[i]->immediate.label);
 	free (insn.operand_type[i]);
       }
   }
diff --git a/gas/ecoff.c b/gas/ecoff.c
index 1163c33..08bfee1 100644
--- a/gas/ecoff.c
+++ b/gas/ecoff.c
@@ -2526,10 +2526,8 @@ ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
     as_warn (_("empty symbol name in .def; ignored"));
   else
     {
-      if (coff_sym_name != (char *) NULL)
-	free (coff_sym_name);
-      if (coff_tag != (char *) NULL)
-	free (coff_tag);
+      free (coff_sym_name);
+      free (coff_tag);
 
       coff_sym_name = xstrdup (name);
       coff_type = type_info_init;
diff --git a/gas/read.c b/gas/read.c
index cdb4b3a..8f93c2b 100644
--- a/gas/read.c
+++ b/gas/read.c
@@ -1332,8 +1332,7 @@ read_a_source_file (const char *name)
 		  new_length += 100;
 		}
 
-	      if (tmp_buf)
-		free (tmp_buf);
+	      free (tmp_buf);
 
 	      /* We've "scrubbed" input to the preferred format.  In the
 		 process we may have consumed the whole of the remaining
@@ -1801,8 +1800,7 @@ s_comm_internal (int param,
  out:
   if (flag_mri)
     mri_comment_end (stop, stopc);
-  if (name != NULL)
-    free (name);
+  free (name);
   return symbolP;
 }
 
@@ -1862,8 +1860,7 @@ s_mri_common (int small ATTRIBUTE_UNUSED)
 
   sym = symbol_find_or_make (name);
   c = restore_line_pointer (c);
-  if (alc != NULL)
-    free (alc);
+  free (alc);
 
   if (*input_line_pointer != ',')
     align = 0;
@@ -5814,8 +5811,7 @@ s_incbin (int x ATTRIBUTE_UNUSED)
  done:
   if (binfile != NULL)
     fclose (binfile);
-  if (path)
-    free (path);
+  free (path);
 }
 
 /* .include -- include a file at this point.  */
diff --git a/gas/stabs.c b/gas/stabs.c
index de37f0a..c962bb4 100644
--- a/gas/stabs.c
+++ b/gas/stabs.c
@@ -564,8 +564,7 @@ generate_asm_file (int type, const char *file)
 
   colon (sym);
 
-  if (last_file != NULL)
-    free (last_file);
+  free (last_file);
   last_file = xstrdup (file);
 
   free (buf);
diff --git a/gas/symbols.c b/gas/symbols.c
index 2fa7525..acf3943 100644
--- a/gas/symbols.c
+++ b/gas/symbols.c
@@ -923,14 +923,12 @@ symbol_find_noref (const char *name, int noref)
 	*copy++ = TOUPPER (c);
       *copy = '\0';
 
-      if (copy2 != NULL)
-	free (copy2);
+      free (copy2);
       copy = (char *) name;
     }
 
   result = symbol_find_exact_noref (name, noref);
-  if (copy != NULL)
-    free (copy);
+  free (copy);
   return result;
 }
 
diff --git a/gas/testsuite/gas/all/test-gen.c b/gas/testsuite/gas/all/test-gen.c
index 11143ad..f2e0bfe 100644
--- a/gas/testsuite/gas/all/test-gen.c
+++ b/gas/testsuite/gas/all/test-gen.c
@@ -711,10 +711,8 @@ output_insns (func **insn, FILE *as_in, FILE *dis_out)
 	  for (; part-- > 0;)
 	    {
 	    skip:
-	      if (data[part].as_in)
-		free (data[part].as_in);
-	      if (data[part].dis_out
-		  && data[part].dis_out != data[part].as_in)
+	      free (data[part].as_in);
+	      if (data[part].dis_out != data[part].as_in)
 		free (data[part].dis_out);
 	    }