Remove unused variables

Remove unused local variables and declare them conditionally when they
are used only on some architectures.

tccasm.c

@@ -991,7 +991,7 @@ ST_FUNC void asm_instr(void)
 {
     CString astr, astr1;
     ASMOperand operands[MAX_ASM_OPERANDS];
-    int nb_inputs, nb_outputs, nb_operands, i, must_subst, out_reg;
+    int nb_outputs, nb_operands, i, must_subst, out_reg;
     uint8_t clobber_regs[NB_ASM_REGS];
 
     next();
@@ -1040,7 +1040,6 @@ ST_FUNC void asm_instr(void)
        token after the assembler parsing */
     if (tok != ';')
         expect("';'");
-    nb_inputs = nb_operands - nb_outputs;
     
     /* save all values in the memory */
     save_regs(0);

tccelf.c

@@ -1033,7 +1033,7 @@ static void put_got_entry(TCCState *s1,
 /* build GOT and PLT entries */
 ST_FUNC void build_got_entries(TCCState *s1)
 {
-    Section *s, *symtab;
+    Section *s;
     ElfW_Rel *rel, *rel_end;
     ElfW(Sym) *sym;
     int i, type, reloc_type, sym_index;
@@ -1045,7 +1045,6 @@ ST_FUNC void build_got_entries(TCCState *s1)
         /* no need to handle got relocations */
         if (s->link != symtab_section)
             continue;
-        symtab = s->link;
         rel_end = (ElfW_Rel *)(s->data + s->data_offset);
         for(rel = (ElfW_Rel *)s->data;
             rel < rel_end;
@@ -1456,7 +1455,9 @@ static int elf_output_file(TCCState *s1, const char *filename)
     ElfW(Sym) *sym;
     int type, file_type;
     unsigned long rel_addr, rel_size;
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
     unsigned long bss_addr, bss_size;
+#endif
 
     file_type = s1->output_type;
     s1->nb_errors = 0;
@@ -1788,7 +1789,9 @@ static int elf_output_file(TCCState *s1, const char *filename)
         rel_size = 0;
         rel_addr = 0;
 
-	bss_addr = bss_size = 0;
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+        bss_addr = bss_size = 0;
+#endif
         /* leave one program header for the program interpreter */
         ph = &phdr[0];
         if (interp)

tccgen.c

@@ -647,7 +647,10 @@ static void gbound(void)
    register value (such as structures). */
 ST_FUNC int gv(int rc)
 {
-    int r, rc2, bit_pos, bit_size, size, align, i;
+    int r, bit_pos, bit_size, size, align, i;
+#ifndef TCC_TARGET_X86_64
+    int rc2;
+#endif
 
     /* NOTE: get_reg can modify vstack[] */
     if (vtop->type.t & VT_BITFIELD) {
@@ -718,9 +721,11 @@ ST_FUNC int gv(int rc)
 #endif
 
         r = vtop->r & VT_VALMASK;
+#ifndef TCC_TARGET_X86_64
         rc2 = RC_INT;
         if (rc == RC_IRET)
             rc2 = RC_LRET;
+#endif
         /* need to reload if:
            - constant
            - lvalue (need to dereference pointer)

tccpp.c

@@ -3011,7 +3011,6 @@ ST_FUNC void preprocess_new()
 {
     int i, c;
     const char *p, *r;
-    TokenSym *ts;
 
     /* init isid table */
     for(i=CH_EOF;i<256;i++)
@@ -3030,7 +3029,7 @@ ST_FUNC void preprocess_new()
             if (c == '\0')
                 break;
         }
-        ts = tok_alloc(p, r - p - 1);
+        tok_alloc(p, r - p - 1);
         p = r;
     }
 }