On Wed, Mar 19, 2014 at 3:23 PM, Bill Schmidt <wschm...@linux.vnet.ibm.com> wrote: > Hi, > > Support for Power8 features and the new powerpc64le-linux-gnu target, > including the ELFv2 ABI, has been developed up till now on the > ibm/gcc-4_8-branch. It was appropriate to use this separate branch > while the support was unstable, but this branch will not represent a > particularly good support mechanism for distributions going forward. > Most distros are set up to pull from the major release branches, and > having a separate branch for one target is quite inconvenient. Also, > the ibm/gcc-4_8-branch's original purpose is to serve as the code base > for IBM's Advance Toolchain 7.0. Over time the two purposes that the > branch currently serves will diverge and make things even more > complicated. > > The code is now tested and stable enough that we are ready to backport > this support to the FSF 4.8 branch. This patch series constitutes that > backport. > > Almost all of the changes are specific to PowerPC portions of the code, > and for those patches I am only CCing David. However, some of the > patches require changes to common code, and for these I will CC Richard > and Jakub. Three of these are slightly unrelated but necessary patches, > one to enable decimal float ABS builtins, and two others to fix PR54537 > and PR56843. In addition there are patches that update configuration > files throughout for the new target, and some small changes in common > call support (call.c, expr.h, function.c) to support how the new ABI > handles calls. > > I realize it is unusual to backport such a large amount of code, but we > have been asked by distribution partners to do this, and we feel it > makes good sense for long-term support. > > I have tested the patch series by applying it to a clean FSF 4.8 branch > and comparing the test results against those from the IBM 4.8 branch on > three systems: > * Power8, little endian (--mcpu=power8) > * Power8, big endian (--mcpu=power8) > * Power7, big endian (--mcpu=power7) > > I also checked a recursive diff against the two source directories to > ensure that no patches were missed. > > Thanks, > Bill > > [ 1/26] diff-p8 > [ 2/26] diff-p8-htm > [ 3/26] diff-le-config > [ 4/26] diff-le-libtool > [ 5/26] diff-le-tests > [ 6/26] diff-le-dfp > [ 7/26] diff-le-vector > [ 8/26] diff-abi-compat > [ 9/26] diff-abi-calls > [10/26] diff-abi-elfv2 > [11/26] diff-abi-gotest > [12/26] diff-le-align > [13/26] diff-abi-libffi > [14/26] diff-dfp-abs > [15/26] diff-pr54537 > [16/26] diff-pr56843 > [17/26] diff-direct-move > [18/26] diff-le-config-2 > [19/26] diff-quad-memory > [20/26] diff-lra > [21/26] diff-le-vector-api > [22/26] diff-mcall > [23/26] diff-pr60137-pr60203 > [24/26] diff-reload > [25/26] diff-v1ti > [26/26] diff-trunk-missing
With the positive feedback from Darwin and RTEMS, the additional backports for AIX and the bug fix for SPE, I am going to approve this patch series. There is a remaining issue with e600, but IBM LTC cannot reproduce it. If IBM can get more information, it can be addressed in a later patch to trunk and 4.8 branch. Thanks, David
