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-rw-r--r--gcc/unroll.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/unroll.c b/gcc/unroll.c
index 2fb1f9a..ce6623c 100644
--- a/gcc/unroll.c
+++ b/gcc/unroll.c
@@ -1495,10 +1495,11 @@ calculate_giv_inc (pattern, src_insn, regno)
if (GET_CODE (increment) == LO_SUM)
increment = XEXP (increment, 1);
else if (GET_CODE (increment) == IOR
- || GET_CODE (increment) == ASHIFT)
+ || GET_CODE (increment) == ASHIFT
+ || GET_CODE (increment) == PLUS)
{
/* The rs6000 port loads some constants with IOR.
- The alpha port loads some constants with ASHIFT. */
+ The alpha port loads some constants with ASHIFT and PLUS. */
rtx second_part = XEXP (increment, 1);
enum rtx_code code = GET_CODE (increment);
@@ -1513,6 +1514,8 @@ calculate_giv_inc (pattern, src_insn, regno)
if (code == IOR)
increment = GEN_INT (INTVAL (increment) | INTVAL (second_part));
+ else if (code == PLUS)
+ increment = GEN_INT (INTVAL (increment) + INTVAL (second_part));
else
increment = GEN_INT (INTVAL (increment) << INTVAL (second_part));
}