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From: | Andy H |
Subject: | [avr-gcc-list] Can someone benchmark this option please |
Date: | Tue, 22 Jul 2008 20:40:08 -0400 |
User-agent: | Thunderbird 2.0.0.14 (Windows/20080421) |
Hi,I have noted problem where gcc is optimizing if-then-else constructs - with disastrous results. For example:
if (a >= 0) return 8; else return 0; (This is now reported as bug.) Can folks try the following gcc option -fno-if-conversionon their own code at -Os optimization, and see if this produce better/worse or same code? This will help figure if the whole pass should be skipped - or whether it still contains useful optimizations.
Andy
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