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From: Dan Nicolaescu <dann@godzilla.ics.uci.edu> To: gcc-gnats@gcc.gnu.org Subject: target/6882: useless stack adjustment code on SPARC Date: Fri, 31 May 2002 03:06:00 -0000 [thread overview] Message-ID: <20020531073713.10756.qmail@sources.redhat.com> (raw) >Number: 6882 >Category: target >Synopsis: useless stack adjustment code on SPARC >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Fri May 31 00:46:06 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Dan Nicolaescu <dann@godzilla.ics.uci.edu> >Release: gcc-3.1 >Organization: >Environment: sparc-sun-solaris2.7 >Description: For the following code: class Complex_i { public: int re, im; Complex_i (int r, int i) : re(r), im(i) {} Complex_i () {} }; inline Complex_i operator+ (Complex_i a, Complex_i b) { return Complex_i ( a.re+b.re, a.im+b.im); } void foobar (void) { Complex_i factor (123, 428); factor = factor + factor; } gcc-3.1 -O3 generates: _Z6foobarv: .LLFB4: !#PROLOGUE# 0 add %sp, -144, %sp .LLCFI2: !#PROLOGUE# 1 nop retl sub %sp, -144, %sp the stack adjustment code is useless. Is it possible not to emmit it? >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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