Please add the ~alpha keyword to dev-util/valgrind-3.14.0
and also ~sparc ~ia64
Please provide a rationale behind the request. As implemented valgrind is a jit-compiler from target into a host instruction set. Each platform has to be supported explicitly as a sizable chunk of code: instruction decoder, compiler,syscall ABI description and rudimentary ELF loader. Currently supported platforms are defined in https://sourceware.org/git/?p=valgrind.git;a=blob;f=configure.ac;h=289514ff15d1481d36dcd91130b992d81f239808;hb=HEAD#l221 Namely: i?86 x86_64) powerpc64 powerpc64le powerpc s390x armv7* aarch64* mips mipsel mipsisa32r2 mips64* mipsisa64* Note: all of the arches you requested are unsupported today.
Rationale is that the tests for media-libs/kvazaar use valgrind and I'm trying to get them to work (bug 671146) We can just disable those tests on those architectures, no problem. I thought this would be a simple keywording request, not a massive effort for upstream :)
USE=valgrind is already use.mask-ed on those targets. If you can make a subset of tests optional for valgrind (and you usually have to do it anyway) you should be fine.