https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116649
Bug ID: 116649
Summary: PPC: Suboptimal code for __builtin_bcdadd_ovf on
Power10
Product: gcc
Version: 14.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jens.seifert at de dot ibm.com
Target Milestone: ---
unsigned long long bcdadd(vector __int128 a, vector __int128 b, vector __int128
*c)
{
return __builtin_bcdadd_ov(a, b, 0);
}
creates:
bcdadd(__int128 __vector(1), __int128 __vector(1), __int128 __vector(1)*):
.quad .L.bcdadd(__int128 __vector(1), __int128 __vector(1), __int128
__vector(1)*),.TOC.@tocbase,0
.L.bcdadd(__int128 __vector(1), __int128 __vector(1), __int128 __vector(1)*):
bcdadd. 2,2,3,0
mfcr 3,2
rlwinm 3,3,28,1
blr
.long 0
.byte 0,9,0,0,0,0,0,0
while use of setbc expected.
bcdadd. 2,2,3,0
setbc 3,27
blr
