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* [Bug rtl-optimization/23684] New: Combine stores for non strict alignment targets @ 2005-09-01 18:05 pinskia at gcc dot gnu dot org 2005-09-01 18:07 ` [Bug rtl-optimization/23684] " pinskia at gcc dot gnu dot org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-09-01 18:05 UTC (permalink / raw) To: gcc-bugs 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 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/23684] Combine stores for non strict alignment targets 2005-09-01 18:05 [Bug rtl-optimization/23684] New: Combine stores for non strict alignment targets pinskia at gcc dot gnu dot org @ 2005-09-01 18:07 ` 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 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-09-01 18:07 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- GCC target triplet| |powerpc-*-* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23684 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/23684] Combine stores for non strict alignment targets 2005-09-01 18:05 [Bug rtl-optimization/23684] New: Combine stores for non strict alignment targets pinskia at gcc dot gnu dot org 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 2 siblings, 0 replies; 4+ messages in thread From: amodra at bigpond dot net dot au @ 2005-09-07 1:42 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From amodra at bigpond dot net dot au 2005-09-07 01:42 ------- Also even when -mstrict-align if using typedef char align_char __attribute__ ((aligned (4))); void foo (align_char *input) ... -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23684 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/23684] Combine stores for non strict alignment targets 2005-09-01 18:05 [Bug rtl-optimization/23684] New: Combine stores for non strict alignment targets pinskia at gcc dot gnu dot org 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 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-09-15 20:15 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-15 20:14 ------- Confirmed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed| |1 Last reconfirmed|0000-00-00 00:00:00 |2005-09-15 20:14:53 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23684 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2005-09-15 20:15 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2005-09-01 18:05 [Bug rtl-optimization/23684] New: Combine stores for non strict alignment targets pinskia at gcc dot gnu dot org 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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