https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84912
--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
The following patch changes the ICE to an error:
[bergner@makalu-lp1 PR84912]$ cat divde.i
long
div_de (long a, long b)
{
return __builtin_divde (a, b);
}
[bergner@makalu-lp1 PR84912]$
/home/bergner/gcc/build/gcc-fsf-mainline-mcpu-debug/./gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-mainline-mcpu-debug/./gcc/ -m32 -O1 -S
-mcpu=power7 divde.i
divde.i: In function ‘div_de’:
divde.i:4:10: error: builtin ‘__builtin_divde’ is only valid in 64-bit mode
return __builtin_divde (a, b);
^~~~~~~~~~~~~~~~~~~~~~
Ditto for the other builtins.
Index: rs6000.c
===================================================================
--- rs6000.c (revision 258722)
+++ rs6000.c (working copy)
@@ -14076,6 +14076,21 @@ rs6000_expand_binop_builtin (enum insn_c
if (arg0 == error_mark_node || arg1 == error_mark_node)
return const0_rtx;
+ if (!TARGET_POWERPC64
+ && (icode == CODE_FOR_dive_di
+ || icode == CODE_FOR_diveo_di
+ || icode == CODE_FOR_diveu_di
+ || icode == CODE_FOR_diveuo_di))
+ {
+ tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0);
+ bool nonvoid = TREE_TYPE (TREE_TYPE (fndecl)) != void_type_node;
+ enum rs6000_builtins fcode = (enum rs6000_builtins) DECL_FUNCTION_CODE
(fndecl);
+ size_t uns_fcode = (size_t)fcode;
+ const char *name = rs6000_builtin_info[uns_fcode].name;
+ error ("builtin %qs is only valid in 64-bit mode", name);
+ return const0_rtx;
+ }
+
if (icode == CODE_FOR_altivec_vcfux
|| icode == CODE_FOR_altivec_vcfsx
|| icode == CODE_FOR_altivec_vctsxs
