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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/23684] New: Combine stores for non strict alignment targets Date: Thu, 01 Sep 2005 18:05:00 -0000 [thread overview] Message-ID: <20050901180520.23684.pinskia@gcc.gnu.org> (raw) Take the following code: #define OSSwapHostToBigInt32 void foo(char *input) { input[0] = 'H'; input[1] = 'e'; input[2] = 'l'; input[3] = 'l'; input[4] = 'o'; input[5] = ' '; input[6] = 'w'; input[7] = 'o'; input[8] = 'r'; input[9] = 'l'; input[10] = 'd'; input[11] = '\0'; } void bar(char *input) { ((unsigned int *)input)[0] = OSSwapHostToBigInt32('Hell'); ((unsigned int *)input)[1] = OSSwapHostToBigInt32('o wo'); ((unsigned int *)input)[2] = OSSwapHostToBigInt32('rld\0'); } They should generate the same asm but currently don't. Note change OSSwapHostToBigInt32 to correct for little endian. -- Summary: Combine stores for non strict alignment targets Product: gcc Version: 4.1.0 Status: UNCONFIRMED Keywords: missed-optimization Severity: enhancement Priority: P2 Component: rtl-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23684
next reply other threads:[~2005-09-01 18:05 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2005-09-01 18:05 pinskia at gcc dot gnu dot org [this message] 2005-09-01 18:07 ` [Bug rtl-optimization/23684] " pinskia at gcc dot gnu dot org 2005-09-07 1:42 ` amodra at bigpond dot net dot au 2005-09-15 20:15 ` pinskia at gcc dot gnu dot org
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