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From: "mans at mansr dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/43721] New: Failure to optimise (a/b) and (a%b) into single __aeabi_idivmod call Date: Sun, 11 Apr 2010 20:39:00 -0000 [thread overview] Message-ID: <bug-43721-17994@http.gcc.gnu.org/bugzilla/> (raw) Consider the following code: int divmod(int a, int b) { int q = a / b; int r = a % b; return q + r; } For an ARM EABI target, this results in one __aeabi_idivmod() call and one __aeabi_idiv() call even though the former already calculates the quotient. -- Summary: Failure to optimise (a/b) and (a%b) into single __aeabi_idivmod call Product: gcc Version: 4.4.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: mans at mansr dot com GCC build triplet: x86_64-pc-linux-gnu GCC host triplet: x86_64-pc-linux-gnu GCC target triplet: arm-unknown-linux-gnueabi http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43721
next reply other threads:[~2010-04-11 20:39 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-04-11 20:39 mans at mansr dot com [this message] 2010-04-12 3:54 ` [Bug rtl-optimization/43721] " astrange at ithinksw dot com 2010-04-14 20:50 ` rearnsha at gcc dot gnu dot org 2010-04-14 21:31 ` rguenth at gcc dot gnu dot org 2010-04-14 21:34 ` mans at mansr dot com 2010-04-14 21:38 ` rearnsha at gcc dot gnu dot org 2010-04-14 21:39 ` rearnsha at gcc dot gnu dot org
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