On Fri, Jan 19, 2018 at 08:53:52PM -0500, David Edelsohn wrote: > On Fri, Jan 19, 2018 at 3:58 PM, Bill Schmidt > <wschm...@linux.vnet.ibm.com> wrote: > > Hi, > > > > My recent patches to trunk and gcc-7-branch for avoiding speculation of > > indirect branches has a flaw, pointed out by David. Usage of "." to > > represent the program counter is not portable across all POWER > > assemblers, particularly not being accepted on AIX. "$" is the > > universally accepted alternative. So change the code and the test > > cases to use $ instead of . for this purpose. > > > > Regstrap is in progress on powerpc64-linux-gnu and powerpc64le-linux-gnu. > > Assuming no issues are found, is this okay for trunk and backport to 7? > > Once I got past the "." issue, I have discovered that the AIX > assembler also doesn't like > > crset eq > > It doesn't like the symbolic name for the operand, it wants a numeric > operand for "eq".
Wow, nasty. It is the very first thing in the "extended mnemonics" appendix in the ISA. "crset 2" works (I tried it out on gcc111). Segher
