+2010-03-19 Bernd Schmidt <bernd.schmidt@codesourcery.com>
+
+ PR rtl-optimization/42258
+ * ira-lives.c (check_and_make_def_conflict): Ignore conflict for a
+ use that may match DEF.
+
2010-03-19 Michael Matz <matz@suse.de>
PR c++/43116
for (use = 0; use < recog_data.n_operands; use++)
{
+ int alt1;
+
if (use == def || recog_data.operand_type[use] == OP_OUT)
continue;
else
use_cl = recog_op_alt[use][alt].cl;
+ /* If there's any alternative that allows USE to match DEF, do not
+ record a conflict. If that causes us to create an invalid
+ instruction due to the earlyclobber, reload must fix it up. */
+ for (alt1 = 0; alt1 < recog_data.n_alternatives; alt1++)
+ if (recog_op_alt[use][alt1].matches == def
+ || (use < recog_data.n_operands - 1
+ && recog_data.constraints[use][0] == '%'
+ && recog_op_alt[use + 1][alt1].matches == def)
+ || (use >= 1
+ && recog_data.constraints[use - 1][0] == '%'
+ && recog_op_alt[use - 1][alt1].matches == def))
+ break;
+
+ if (alt1 < recog_data.n_alternatives)
+ continue;
+
advance_p = check_and_make_def_use_conflict (dreg, def_cl, use,
use_cl, advance_p);
+2010-03-19 Bernd Schmidt <bernd.schmidt@codesourcery.com>
+
+ PR rtl-optimization/42258
+ * gcc.target/arm/thumb1-mul-moves.c: New test.
+
2010-03-19 Michael Matz <matz@suse.de>
PR c++/43116
--- /dev/null
+/* Check for unnecessary register moves. */
+/* { dg-options "-mthumb -Os" } */
+/* { dg-require-effective-target arm_thumb1_ok } */
+
+int f(int x)
+{
+ return x*42;
+}
+
+/* { dg-final { scan-assembler-not "mov\[\\t \]*r0," } } */
+