Message-ID: <001a01c1651f$dfc66fc0$4bd24dd5@piec>
From: "Piotr Fusik" <P DOT Fusik AT elka DOT pw DOT edu DOT pl>
To: <djgpp AT delorie DOT com>
Subject: gcc: switch() optimization
Date: 	Sun, 4 Nov 2001 11:56:22 +0100
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Reply-To: djgpp AT delorie DOT com

Consider following example:

int main(int argc, char *argv[])
{
 switch (argc & 1) {
 case 0:
  return 10;
 case 1:
  return 20;
 }
}

gcc version 2.95.3 20010315/djgpp (release) with -O2 generates a redundant
check for the range of (argc & 1). Same is for switch (x & 0xff) with all
256 cases.

I'm unsure if it's DJGPP or gcc problem. If it's gcc's, maybe gcc 3.0.0
solves it? If so, when will it be available for DJGPP?