| commit | a223ccae386449169774597b15a00f2d70addce7 | [log] [tgz] |
|---|---|---|
| author | Michael Munday <munday@ca.ibm.com> | Mon Apr 11 20:23:19 2016 -0400 |
| committer | Brad Fitzpatrick <bradfitz@golang.org> | Tue Apr 12 14:38:17 2016 +0000 |
| tree | 6eaee817a45eed1d09004117cfe14b781c52b9fd | |
| parent | 944a0859b9a16a1951512b82870a31f371d1c417 [diff] |
cmd/compile/internal/s390x: add s390x support s390x does not require duffzero/duffcopy since it has storage-to-storage instructions that can copy/clear up to 256 bytes at a time. peep contains several new passes to optimize instruction sequences that match s390x instructions such as the compare-and-branch and load/store multiple instructions. copyprop and subprop have been extended to work with moves that require sign/zero extension. This work could be ported to other architectures that do not used sized math however it does add complexity and will probably be rendered unnecessary by ssa in the near future. Change-Id: I1b64b281b452ed82a85655a0df69cb224d2a6941 Reviewed-on: https://go-review.googlesource.com/20873 Run-TryBot: Michael Munday <munday@ca.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Bill O'Farrell <billotosyr@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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