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cc register usage on i386/2.96
- To: gcc at gcc dot gnu dot org
- Subject: cc register usage on i386/2.96
- From: "Andi Kleen" <ak at suse dot de>
- Date: Sun, 27 Aug 2000 16:20:28 +0200
Hallo,
gcc 2.96 seems to have lost the ability to directly use the condition
code generated by arithmetic instructions (like add or or). It always inserts
an redundant testl in my tests. According to a comment in i386.c it should
only do that during the reload pass, because reload does not seem to know
about cc, but it seems to do that always. Is there any chance to restore
that capability ?
-Andi