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From: "jay.foad at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/60159] New: improve code for conditional sibcall Date: Wed, 12 Feb 2014 11:24:00 -0000 [thread overview] Message-ID: <bug-60159-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60159 Bug ID: 60159 Summary: improve code for conditional sibcall Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: jay.foad at gmail dot com If I compile this code for x86-64 I get: $ cat jcc.c extern int f(int x); int g(int x) { return x > 3 ? f(x) : x; } $ cc1 -quiet -O3 jcc.c -o - ... g: .LFB0: .cfi_startproc cmpl $3, %edi jg .L4 movl %edi, %eax ret .p2align 4,,10 .p2align 3 .L4: jmp f .cfi_endproc This code would be simpler and shorter if the jg-to-jmp sequence was replaced with a single "jg f" instruction. I'm using gcc built from svn trunk r207717.
next reply other threads:[~2014-02-12 11:24 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-02-12 11:24 jay.foad at gmail dot com [this message] 2014-02-12 12:20 ` [Bug rtl-optimization/60159] " jakub at gcc dot gnu.org 2014-03-07 17:20 ` law at redhat dot com 2015-02-09 18:49 ` [Bug target/60159] " pinskia at gcc dot gnu.org 2021-08-19 3:31 ` pinskia at gcc dot gnu.org
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