+2010-03-19 Michael Matz <matz@suse.de>
+
+ PR target/43305
+ * builtins.c (expand_builtin_interclass_mathfn,
+ expand_builtin_signbit): Use maybe_emit_unop_insn, emit libcalls
+ if that fails.
+
2010-03-19 Richard Guenther <rguenther@suse.de>
PR tree-optimization/43415
if (icode != CODE_FOR_nothing)
{
+ rtx last = get_last_insn ();
+ tree orig_arg = arg;
/* Make a suitable register to place result in. */
if (!target
|| GET_MODE (target) != TYPE_MODE (TREE_TYPE (exp)))
/* Compute into TARGET.
Set TARGET to wherever the result comes back. */
- emit_unop_insn (icode, target, op0, UNKNOWN);
- return target;
+ if (maybe_emit_unop_insn (icode, target, op0, UNKNOWN))
+ return target;
+ delete_insns_since (last);
+ CALL_EXPR_ARG (exp, 0) = orig_arg;
}
return NULL_RTX;
icode = signbit_optab->handlers [(int) fmode].insn_code;
if (icode != CODE_FOR_nothing)
{
+ rtx last = get_last_insn ();
target = gen_reg_rtx (TYPE_MODE (TREE_TYPE (exp)));
- emit_unop_insn (icode, target, temp, UNKNOWN);
- return target;
+ if (maybe_emit_unop_insn (icode, target, temp, UNKNOWN))
+ return target;
+ delete_insns_since (last);
}
/* For floating point formats without a sign bit, implement signbit
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-Os -ffast-math" } */
+extern int ilogbl(long double);
+extern int printf(const char *format, ...);
+
+__attribute__((noinline, noclone))
+int foo(long double x)
+{
+ return ilogbl(x);
+}
+
+int main()
+{
+ printf("%d\n", foo(100));
+ return 0;
+}