https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70381
Bug ID: 70381
Summary: On powerpc, -mfloat128 is on by default for all VSX
systems
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: meissner at gcc dot gnu.org
Target Milestone: ---
The file config/rs6000/rs6000-cpus.def enables -mfloat128 for ISA 2.06
(power7). However, the emulator library in libgcc is only built on Linux
systems. In addition, glibc has not been modified to support __float128 at
this time.
In the GCC 6.0 time frame, -mfloat128 should not be set by default on
power7/power8 systems. In GCC 7.0, the default to enable -mfloat128 should be
set on the OSes that build the emulator or have the hardware support for IEEE
128-bit floating point.
