The attached trivial patch strengthens a local variable in cse.c from
rtx to rtx_insn *, allowing the elimination of a checked cast, and thus
falls under the pre-approval granted by Jeff here:
https://gcc.gnu.org/ml/gcc-patches/2014-08/msg01310.html
Bootstrapped on x86_64-unknown-linux-gnu (Fedora 20), and has been
rebuilt as part of a config-list.mk build for all working configurations
(albeit with other patches for the latter case).
Committed to trunk as r214932.
Index: gcc/ChangeLog
===================================================================
--- gcc/ChangeLog (revision 214931)
+++ gcc/ChangeLog (revision 214932)
@@ -1,5 +1,10 @@
2014-09-05 David Malcolm <dmalc...@redhat.com>
+ * cse.c (cse_insn): Strengthen local "new_rtx" from rtx to
+ rtx_insn *, eliminating a checked cast.
+
+2014-09-05 David Malcolm <dmalc...@redhat.com>
+
* rtl.h (modified_between_p): Strengthen params 2 and 3 from
const_rtx to const rtx_insn *.
* rtlanal.c (modified_between_p): Likewise, eliminating a checked
Index: gcc/cse.c
===================================================================
--- gcc/cse.c (revision 214931)
+++ gcc/cse.c (revision 214932)
@@ -5435,7 +5435,8 @@
and hope for the best. */
if (n_sets == 1)
{
- rtx new_rtx, note;
+ rtx_insn *new_rtx;
+ rtx note;
new_rtx = emit_jump_insn_before (gen_jump (XEXP (src, 0)), insn);
JUMP_LABEL (new_rtx) = XEXP (src, 0);
@@ -5450,7 +5451,7 @@
}
delete_insn_and_edges (insn);
- insn = as_a <rtx_insn *> (new_rtx);
+ insn = new_rtx;
}
else
INSN_CODE (insn) = -1;
