(rescan): Remove unnecessary comparisons of ibp to limit.

From-SVN: r8469

diff --git a/gcc/cccp.c b/gcc/cccp.c
index a53ce0f3347614eaab2058b210ee79d0e3c99f86..b33ae3af0c5e2f91b5058692f0b49187b6d06384 100644 (file)
--- a/gcc/cccp.c
+++ b/gcc/cccp.c
@@ -2880,7 +2880,7 @@ do { ip = &instack[indepth];              \
        while (ibp < limit) {
          switch (*ibp++) {
          case '/':
-           if (warn_comments && ibp < limit && *ibp == '*')
+           if (warn_comments && *ibp == '*')
              warning ("`/*' within comment");
            break;
          case '*':
@@ -2928,8 +2928,8 @@ do { ip = &instack[indepth];              \
         as an identifier.  Periods also, for sake of "3.e7".  */
 
       if (ident_length == 0) {
-       while (ibp < limit) {
-         while (ibp < limit && ibp[0] == '\\' && ibp[1] == '\n') {
+       for (;;) {
+         while (ibp[0] == '\\' && ibp[1] == '\n') {
            ++ip->lineno;
            ibp += 2;
          }
@@ -2942,11 +2942,11 @@ do { ip = &instack[indepth];            \
          /* A sign can be part of a preprocessing number
             if it follows an e.  */
          if (c == 'e' || c == 'E') {
-           while (ibp < limit && ibp[0] == '\\' && ibp[1] == '\n') {
+           while (ibp[0] == '\\' && ibp[1] == '\n') {
              ++ip->lineno;
              ibp += 2;
            }
-           if (ibp < limit && (*ibp == '+' || *ibp == '-')) {
+           if (*ibp == '+' || *ibp == '-') {
              *obp++ = *ibp++;
              /* But traditional C does not let the token go past the sign.  */
              if (traditional)
@@ -3204,7 +3204,7 @@ startagain:
                      old_oln = op->lineno;
                    }
                    /* A comment: copy it unchanged or discard it.  */
-                   else if (*ibp == '/' && ibp+1 != limit && ibp[1] == '*') {
+                   else if (*ibp == '/' && ibp[1] == '*') {
                      if (put_out_comments) {
                        *obp++ = '/';
                        *obp++ = '*';