Merge lp:~michaelh1/gcc-linaro/pre2 into lp:gcc-linaro/4.7

[Michael Hope]

Backport Maxim's fix for the partial PRE explosion in bitmnp01.

    2012-05-18 Michael Hope <email address hidden>

          Backport from mainline r186859:

          gcc/
          2012-04-28 Joern Rennecke <email address hidden>
              Steven Bosscher <email address hidden>
              Maxim Kuvyrkov <email address hidden>

          PR tree-optimization/38785
          * common.opt (ftree-partial-pre): New option.
          * doc/invoke.texi: Document it.
          * opts.c (default_options_table): Initialize flag_tree_partial_pre.
          * tree-ssa-pre.c (do_partial_partial_insertion): Insert only if it will
          benefit speed path.
          (execute_pre): Use flag_tree_partial_pre.

[Michael Hope (michaelh1)]

cbuild has taken a snapshot of this branch at r115002 and queued it for build.

The diff against the ancestor r115001 is available at:
 http://builds.linaro.org/toolchain/snapshots/gcc-linaro-4.7+bzr115002~michaelh1~pre2.diff

and will be built on the following builders:
 a9-builder a9hf-builder armv5-builder i686 i686-precise x86_64 x86_64-precise

You can track the build queue at:
 http://ex.seabright.co.nz/helpers/scheduler

cbuild-snapshot: gcc-linaro-4.7+bzr115002~michaelh1~pre2
cbuild-ancestor: lp:gcc-linaro+bzr115001
cbuild-state: check

[Linaro Toolchain Builder (cbuild)]

cbuild successfully built this on x86_64-precise-cbuild344-oort1-x86_64r1.

The build results are available at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/x86_64-precise-cbuild344-oort1-x86_64r1

The testsuite results are the same as the branch point lp:gcc-linaro+bzr115001

The full diff is at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/x86_64-precise-cbuild344-oort1-x86_64r1/testsuite-diff.txt

The full testsuite results are at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/x86_64-precise-cbuild344-oort1-x86_64r1/gcc-testsuite.txt

cbuild-checked: x86_64-precise-cbuild344-oort1-x86_64r1

[Linaro Toolchain Builder (cbuild)]

cbuild successfully built this on i686-precise-cbuild342-oort2-i686r1.

The build results are available at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/i686-precise-cbuild342-oort2-i686r1

The testsuite results are the same as the branch point lp:gcc-linaro+bzr115001

The full diff is at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/i686-precise-cbuild342-oort2-i686r1/testsuite-diff.txt

The full testsuite results are at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/i686-precise-cbuild342-oort2-i686r1/gcc-testsuite.txt

cbuild-checked: i686-precise-cbuild342-oort2-i686r1

[Linaro Toolchain Builder (cbuild)]

cbuild successfully built this on armv7l-natty-cbuild341-tcpanda03-armv5r2.

The build results are available at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-natty-cbuild341-tcpanda03-armv5r2

The testsuite results are the same as the branch point lp:gcc-linaro+bzr115001

The full diff is at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-natty-cbuild341-tcpanda03-armv5r2/testsuite-diff.txt

The full testsuite results are at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-natty-cbuild341-tcpanda03-armv5r2/gcc-testsuite.txt

cbuild-checked: armv7l-natty-cbuild341-tcpanda03-armv5r2

[Linaro Toolchain Builder (cbuild)]

cbuild successfully built this on armv7l-natty-cbuild344-tcpanda05-cortexa9r1.

The build results are available at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-natty-cbuild344-tcpanda05-cortexa9r1

-FAIL: g++.dg/cdce3.C -std=gnu++11 execution test
+PASS: g++.dg/cdce3.C -std=gnu++11 execution test
-FAIL: g++.dg/cdce3.C -std=gnu++98 execution test
+PASS: g++.dg/cdce3.C -std=gnu++98 execution test

The full diff is at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-natty-cbuild344-tcpanda05-cortexa9r1/testsuite-diff.txt

The full testsuite results are at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-natty-cbuild344-tcpanda05-cortexa9r1/gcc-testsuite.txt

cbuild-checked: armv7l-natty-cbuild344-tcpanda05-cortexa9r1

[Linaro Toolchain Builder (cbuild)]

cbuild successfully built this on armv7l-precise-cbuild342-ursa1-cortexa9hfr1.

The build results are available at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-precise-cbuild342-ursa1-cortexa9hfr1

The testsuite results are the same as the branch point lp:gcc-linaro+bzr115001

The full diff is at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-precise-cbuild342-ursa1-cortexa9hfr1/testsuite-diff.txt

The full testsuite results are at:
 http://ex.seabright.co.nz/build/gcc-linaro-4.7+bzr115002~michaelh1~pre2/logs/armv7l-precise-cbuild342-ursa1-cortexa9hfr1/gcc-testsuite.txt

cbuild-checked: armv7l-precise-cbuild342-ursa1-cortexa9hfr1

[Michael Hope (michaelh1)]

This doesn't show the libgomp regression that was seen in the earlier backport and later found to be random. Good.

Benchmarking...

[Michael Hope (michaelh1)]

Benchmarks are OK. The mp2encfixdata4 regression doesn't appear in manual testing with high resolution timers.