[Bug target/35491] New: wrong ABI for some struct passing with vector code
pinskia at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Fri Mar 7 01:19:00 GMT 2008
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
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