Re: [PATCH #2], PR 71201, Fix xxperm fusion on PowerPC ISA 3.0

2016-05-23 Thread Segher Boessenkool
Hi, On Mon, May 23, 2016 at 06:17:36PM -0400, Michael Meissner wrote: > > > Unfortunately, in running the testsuite on the power9 simulator, we > > > discovered > > > that the test gcc.c-torture/execute/pr56866.c would fail because the > > > fusion > > > alternatives confused the register alloca

Re: [PATCH #2], PR 71201, Fix xxperm fusion on PowerPC ISA 3.0

2016-05-23 Thread Michael Meissner
On Thu, May 19, 2016 at 10:33:41AM -0500, Segher Boessenkool wrote: > On Thu, May 19, 2016 at 10:53:41AM -0400, Michael Meissner wrote: > > GCC 6.1 added support for the XXPERM instruction for the PowerPC ISA 3.0. > > The > > XXPERM instruction is essentially a 4 operand instruction, with only 3