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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 target/35491] New: wrong ABI for some struct passing with vector code Date: Fri, 07 Mar 2008 01:19:00 -0000 [thread overview] Message-ID: <bug-35491-6528@http.gcc.gnu.org/bugzilla/> (raw) Take the following code: #define vector __vector struct data { float f; //0 - 3 int i; // 4 - 7 double d; // 8 - 15 vector float v; // 16 - 31 };// __attribute__ ((d64_abi)); //size is 32 extern int bar (int a, struct data b, void *c); int foo (struct data *inp_r3, void *inp_r4) { return bar(10, *inp_r3, ((void *) inp_r4)); } --- CUT --- We get: _foo: mflr r0 std r0,16(r1) stdu r1,-128(r1) mfspr r0,256 stw r0,124(r1) oris r0,r0,0x2000 mtspr 256,r0 li r0,16 lfs f1,0(r3) lvx v2,r3,r0 mr r10,r4 <--- note r10 lfd f2,8(r3) lwz r5,4(r3) li r3,10 bl L_bar$stub addi r1,r1,128 lwz r12,-4(r1) mtspr 256,r12 ld r0,16(r1) mtlr r0 blr --- CUT --- With Apple's compiler we get: _foo: mfspr r0,256 stw r0,-12(r1) oris r0,r0,0x2000 mtspr 256,r0 mflr r0 mr r9,r4 <--- NOTE r9 std r0,16(r1) stdu r1,-128(r1) li r0,16 nop lfs f1,0(r3) lfd f2,8(r3) lwz r5,4(r3) lvx v2,r3,r0 li r3,10 bl L_bar$stub addi r1,r1,128 lwz r12,-12(r1) mtspr 256,r12 ld r0,16(r1) mtlr r0 blr -- Summary: wrong ABI for some struct passing with vector code Product: gcc Version: 4.3.0 Status: UNCONFIRMED Keywords: wrong-code, ABI Severity: normal Priority: P3 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org GCC target triplet: powerpc64-darwin http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35491
next reply other threads:[~2008-03-07 1:19 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2008-03-07 1:19 pinskia at gcc dot gnu dot org [this message] 2008-03-11 0:57 ` [Bug target/35491] " pinskia at gcc dot gnu dot org 2008-03-11 0:57 ` pinskia at gcc dot gnu dot org 2010-07-24 8:41 ` iains at gcc dot gnu dot org 2010-07-27 13:24 ` iains at gcc dot gnu dot org
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