From 8714ee55cc6cf483bcaaf3b792a2600b58a7b262 Mon Sep 17 00:00:00 2001
From: Francois Perrad <francois.perrad@gadz.org>
Date: Wed, 25 Nov 2015 21:59:46 +0100
Subject: [PATCH] remove register

let the compiler find the best register optimization
---
 bn_fast_mp_montgomery_reduce.c | 16 ++++++++--------
 bn_fast_s_mp_mul_digs.c        |  4 ++--
 bn_fast_s_mp_mul_high_digs.c   |  2 +-
 bn_mp_copy.c                   |  2 +-
 bn_mp_div_2.c                  |  2 +-
 bn_mp_div_2d.c                 |  2 +-
 bn_mp_karatsuba_mul.c          |  4 ++--
 bn_mp_karatsuba_sqr.c          |  4 ++--
 bn_mp_lshd.c                   |  2 +-
 bn_mp_montgomery_reduce.c      |  6 +++---
 bn_mp_mul_2.c                  |  2 +-
 bn_mp_mul_2d.c                 |  4 ++--
 bn_mp_rshd.c                   |  2 +-
 bn_s_mp_add.c                  |  4 ++--
 bn_s_mp_sub.c                  |  4 ++--
 15 files changed, 30 insertions(+), 30 deletions(-)

diff --git a/bn_fast_mp_montgomery_reduce.c b/bn_fast_mp_montgomery_reduce.c
index d2d55a8..a63839d 100644
--- a/bn_fast_mp_montgomery_reduce.c
+++ b/bn_fast_mp_montgomery_reduce.c
@@ -42,8 +42,8 @@ int fast_mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho)
    * an array of double precision words W[...]
    */
   {
-    register mp_word *_W;
-    register mp_digit *tmpx;
+    mp_word *_W;
+    mp_digit *tmpx;
 
     /* alias for the W[] array */
     _W   = W;
@@ -72,7 +72,7 @@ int fast_mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho)
      * by casting the value down to a mp_digit.  Note this requires
      * that W[ix-1] have  the carry cleared (see after the inner loop)
      */
-    register mp_digit mu;
+    mp_digit mu;
     mu = (mp_digit) (((W[ix] & MP_MASK) * rho) & MP_MASK);
 
     /* a = a + mu * m * b**i
@@ -90,9 +90,9 @@ int fast_mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho)
      * first m->used words of W[] have the carries fixed
      */
     {
-      register int iy;
-      register mp_digit *tmpn;
-      register mp_word *_W;
+      int iy;
+      mp_digit *tmpn;
+      mp_word *_W;
 
       /* alias for the digits of the modulus */
       tmpn = n->dp;
@@ -115,8 +115,8 @@ int fast_mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho)
    * significant digits we zeroed].
    */
   {
-    register mp_digit *tmpx;
-    register mp_word *_W, *_W1;
+    mp_digit *tmpx;
+    mp_word *_W, *_W1;
 
     /* nox fix rest of carries */
 
diff --git a/bn_fast_s_mp_mul_digs.c b/bn_fast_s_mp_mul_digs.c
index aaad804..acd13b4 100644
--- a/bn_fast_s_mp_mul_digs.c
+++ b/bn_fast_s_mp_mul_digs.c
@@ -35,7 +35,7 @@ int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
 {
   int     olduse, res, pa, ix, iz;
   mp_digit W[MP_WARRAY];
-  register mp_word  _W;
+  mp_word  _W;
 
   /* grow the destination as required */
   if (c->alloc < digs) {
@@ -85,7 +85,7 @@ int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
   c->used = pa;
 
   {
-    register mp_digit *tmpc;
+    mp_digit *tmpc;
     tmpc = c->dp;
     for (ix = 0; ix < (pa + 1); ix++) {
       /* now extract the previous digit [below the carry] */
diff --git a/bn_fast_s_mp_mul_high_digs.c b/bn_fast_s_mp_mul_high_digs.c
index 6c22b13..b96cf60 100644
--- a/bn_fast_s_mp_mul_high_digs.c
+++ b/bn_fast_s_mp_mul_high_digs.c
@@ -75,7 +75,7 @@ int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
   c->used = pa;
 
   {
-    register mp_digit *tmpc;
+    mp_digit *tmpc;
 
     tmpc = c->dp + digs;
     for (ix = digs; ix < pa; ix++) {
diff --git a/bn_mp_copy.c b/bn_mp_copy.c
index dc853b3..69e9464 100644
--- a/bn_mp_copy.c
+++ b/bn_mp_copy.c
@@ -35,7 +35,7 @@ mp_copy (mp_int * a, mp_int * b)
 
   /* zero b and copy the parameters over */
   {
-    register mp_digit *tmpa, *tmpb;
+    mp_digit *tmpa, *tmpb;
 
     /* pointer aliases */
 
diff --git a/bn_mp_div_2.c b/bn_mp_div_2.c
index 7df0457..d2a213f 100644
--- a/bn_mp_div_2.c
+++ b/bn_mp_div_2.c
@@ -30,7 +30,7 @@ int mp_div_2(mp_int * a, mp_int * b)
   oldused = b->used;
   b->used = a->used;
   {
-    register mp_digit r, rr, *tmpa, *tmpb;
+    mp_digit r, rr, *tmpa, *tmpb;
 
     /* source alias */
     tmpa = a->dp + b->used - 1;
diff --git a/bn_mp_div_2d.c b/bn_mp_div_2d.c
index d809447..5b9fb48 100644
--- a/bn_mp_div_2d.c
+++ b/bn_mp_div_2d.c
@@ -58,7 +58,7 @@ int mp_div_2d (mp_int * a, int b, mp_int * c, mp_int * d)
   /* shift any bit count < DIGIT_BIT */
   D = (mp_digit) (b % DIGIT_BIT);
   if (D != 0) {
-    register mp_digit *tmpc, mask, shift;
+    mp_digit *tmpc, mask, shift;
 
     /* mask */
     mask = (((mp_digit)1) << D) - 1;
diff --git a/bn_mp_karatsuba_mul.c b/bn_mp_karatsuba_mul.c
index 09ee401..d65e37e 100644
--- a/bn_mp_karatsuba_mul.c
+++ b/bn_mp_karatsuba_mul.c
@@ -82,8 +82,8 @@ int mp_karatsuba_mul (mp_int * a, mp_int * b, mp_int * c)
   y1.used = b->used - B;
 
   {
-    register int x;
-    register mp_digit *tmpa, *tmpb, *tmpx, *tmpy;
+    int x;
+    mp_digit *tmpa, *tmpb, *tmpx, *tmpy;
 
     /* we copy the digits directly instead of using higher level functions
      * since we also need to shift the digits
diff --git a/bn_mp_karatsuba_sqr.c b/bn_mp_karatsuba_sqr.c
index 1d9f883..739840d 100644
--- a/bn_mp_karatsuba_sqr.c
+++ b/bn_mp_karatsuba_sqr.c
@@ -52,8 +52,8 @@ int mp_karatsuba_sqr (mp_int * a, mp_int * b)
     goto X0X0;
 
   {
-    register int x;
-    register mp_digit *dst, *src;
+    int x;
+    mp_digit *dst, *src;
 
     src = a->dp;
 
diff --git a/bn_mp_lshd.c b/bn_mp_lshd.c
index 0e0ea0a..f6f800f 100644
--- a/bn_mp_lshd.c
+++ b/bn_mp_lshd.c
@@ -33,7 +33,7 @@ int mp_lshd (mp_int * a, int b)
   }
 
   {
-    register mp_digit *top, *bottom;
+    mp_digit *top, *bottom;
 
     /* increment the used by the shift amount then copy upwards */
     a->used += b;
diff --git a/bn_mp_montgomery_reduce.c b/bn_mp_montgomery_reduce.c
index d2a65c2..af2cc58 100644
--- a/bn_mp_montgomery_reduce.c
+++ b/bn_mp_montgomery_reduce.c
@@ -56,9 +56,9 @@ mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho)
 
     /* a = a + mu * m * b**i */
     {
-      register int iy;
-      register mp_digit *tmpn, *tmpx, u;
-      register mp_word r;
+      int iy;
+      mp_digit *tmpn, *tmpx, u;
+      mp_word r;
 
       /* alias for digits of the modulus */
       tmpn = n->dp;
diff --git a/bn_mp_mul_2.c b/bn_mp_mul_2.c
index 0859c64..9c72c7f 100644
--- a/bn_mp_mul_2.c
+++ b/bn_mp_mul_2.c
@@ -31,7 +31,7 @@ int mp_mul_2(mp_int * a, mp_int * b)
   b->used = a->used;
 
   {
-    register mp_digit r, rr, *tmpa, *tmpb;
+    mp_digit r, rr, *tmpa, *tmpb;
 
     /* alias for source */
     tmpa = a->dp;
diff --git a/bn_mp_mul_2d.c b/bn_mp_mul_2d.c
index 9506814..9967e46 100644
--- a/bn_mp_mul_2d.c
+++ b/bn_mp_mul_2d.c
@@ -44,8 +44,8 @@ int mp_mul_2d (mp_int * a, int b, mp_int * c)
   /* shift any bit count < DIGIT_BIT */
   d = (mp_digit) (b % DIGIT_BIT);
   if (d != 0) {
-    register mp_digit *tmpc, shift, mask, r, rr;
-    register int x;
+    mp_digit *tmpc, shift, mask, r, rr;
+    int x;
 
     /* bitmask for carries */
     mask = (((mp_digit)1) << d) - 1;
diff --git a/bn_mp_rshd.c b/bn_mp_rshd.c
index 8ed6933..77b0f6c 100644
--- a/bn_mp_rshd.c
+++ b/bn_mp_rshd.c
@@ -32,7 +32,7 @@ void mp_rshd (mp_int * a, int b)
   }
 
   {
-    register mp_digit *bottom, *top;
+    mp_digit *bottom, *top;
 
     /* shift the digits down */
 
diff --git a/bn_s_mp_add.c b/bn_s_mp_add.c
index 47fdaf1..c2ad649 100644
--- a/bn_s_mp_add.c
+++ b/bn_s_mp_add.c
@@ -47,8 +47,8 @@ s_mp_add (mp_int * a, mp_int * b, mp_int * c)
   c->used = max + 1;
 
   {
-    register mp_digit u, *tmpa, *tmpb, *tmpc;
-    register int i;
+    mp_digit u, *tmpa, *tmpb, *tmpc;
+    int i;
 
     /* alias for digit pointers */
 
diff --git a/bn_s_mp_sub.c b/bn_s_mp_sub.c
index 55260fe..c0ea556 100644
--- a/bn_s_mp_sub.c
+++ b/bn_s_mp_sub.c
@@ -35,8 +35,8 @@ s_mp_sub (mp_int * a, mp_int * b, mp_int * c)
   c->used = max;
 
   {
-    register mp_digit u, *tmpa, *tmpb, *tmpc;
-    register int i;
+    mp_digit u, *tmpa, *tmpb, *tmpc;
+    int i;
 
     /* alias for digit pointers */
     tmpa = a->dp;