On 10/22/14 15:40, Jakub Jelinek wrote:
diff --git a/gcc/dce.c b/gcc/dce.c
index 5b7d36e..a52a59c 100644
--- a/gcc/dce.c
+++ b/gcc/dce.c
@@ -127,6 +127,10 @@ deletable_insn_p (rtx_insn *insn, bool fast,
bitmap arg_stores)
if (HARD_REGISTER_NUM_P (DF_REF_REGNO (def))
&& global_regs[DF_REF_REGNO (def)])
return false;
+ /* Initialization of pseudo PIC register should never be removed. */
+ else if (DF_REF_REG (def) == pic_offset_table_rtx
+ && REGNO (pic_offset_table_rtx) >= FIRST_PSEUDO_REGISTER)
+ return false;
Similarly.
But here, after reload completes, there shouldn't be pseudos in the IL, so
the condition should not trigger anymore.
Agreed.
So just the first one needs to check for !reload_completed. With that
change, and a bootstrap/regression run the patch is OK for the trunk.
Jeff
