Since 3.4.x, you can't use both -mcpu=power4 and -maltivec on ppc targets. This
is critical that it's fixed before 4.0 as the linux kernel will rely on this.
It's currently using -mcpu=970 as a workaround since it has one file using
-maltivec (the RAID6 code), but this workaround isn't suitable for 4.0 due to
implicit generation of vector code.
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Summary: -mcpu=power4 vs. -maltivec
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: benh at kernel dot crashing dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC host triplet: powerpc64-linux-gcc
GCC target triplet: powerpc64-linux-gcc
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20277
