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From: pb@nexus.co.uk To: gcc-gnats@gcc.gnu.org Subject: optimization/5720: useless jump to call of nonreturning function Date: Mon, 18 Feb 2002 07:46:00 -0000 [thread overview] Message-ID: <20020218154223.15211.qmail@sources.redhat.com> (raw) >Number: 5720 >Category: optimization >Synopsis: useless jump to call of nonreturning function >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: pessimizes-code >Submitter-Id: net >Arrival-Date: Mon Feb 18 07:46:01 PST 2002 >Closed-Date: >Last-Modified: >Originator: Debian report #106866, submitted by <herbert@gondor.apana.org.au> >Release: 3.0.3 >Organization: >Environment: i686-linux >Description: Compile the attached file with -O2. The generated assembler includes: movl intpending, %eax testl %eax, %eax je .L6 jmp .L11 .p2align 2 .L9: orl $1, %esi testl %ebx, %ebx [...] .L11: call doint The "doint" function is marked with attribute((noreturn)) and there are no other branches to .L11. The extra "jmp .L11" brings no benefit - the "call doint" could be put directly in its place. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
next reply other threads:[~2002-02-18 15:46 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-02-18 7:46 pb [this message] 2002-04-03 2:21 rth 2002-05-27 16:46 doko 2003-03-15 4:44 bangerth
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