[PATCH RESEND v2 03/14] lib/mpi: mpi_write_sgl(): purge redundant pointer arithmetic
From: Nicolai Stange
Date: Mon Mar 21 2016 - 09:30:14 EST
Within the copying loop in mpi_write_sgl(), we have
if (lzeros) {
...
p -= lzeros;
y = lzeros;
}
p = p - (sizeof(alimb) - y);
If lzeros == 0, then y == 0, too. Thus, lzeros gets subtracted and added
back again to p.
Purge this redundancy.
Signed-off-by: Nicolai Stange <nicstange@xxxxxxxxx>
---
lib/mpi/mpicoder.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/lib/mpi/mpicoder.c b/lib/mpi/mpicoder.c
index d8b372b..78ec4e1 100644
--- a/lib/mpi/mpicoder.c
+++ b/lib/mpi/mpicoder.c
@@ -407,12 +407,11 @@ int mpi_write_to_sgl(MPI a, struct scatterlist *sgl, unsigned *nbytes,
mpi_limb_t *limb2 = (void *)p - sizeof(alimb)
+ lzeros;
*limb1 = *limb2;
- p -= lzeros;
y = lzeros;
lzeros = 0;
}
- p = p - (sizeof(alimb) - y);
+ p = p - sizeof(alimb);
for (x = 0; x < sizeof(alimb) - y; x++) {
if (!buf_len) {
--
2.7.3