Code review comment for lp://staging/~christophe-lyon/gcc-linaro/backport_bswap16_perf_regression2

cbuild successfully built this on x86_64-precise-cbuild449-oort3-xcortexa15hfr1.

The build results are available at:
 http://cbuild.validation.linaro.org/build/gcc-linaro-4.7+bzr115050~christophe-lyon~backport_bswap16_perf_regression2/logs/x86_64-precise-cbuild449-oort3-xcortexa15hfr1

-PASS: gcc.dg/di-sync-multithread.c execution test
+FAIL: gcc.dg/di-sync-multithread.c execution test
-PASS: gcc.dg/tree-ssa/forwprop-11.c scan-tree-dump-times forwprop1 "= MEM\\[\\(int \\*\\)[ap]_.. \\+ 4B\\];" 2
+PASS: gcc.dg/tree-ssa/forwprop-11.c scan-tree-dump-times forwprop1 "= MEM\\[\\(int \\*\\)a_.. \\+ 4B\\];" 2
-PASS: gcc.dg/tree-ssa/ssa-fre-1.c scan-tree-dump fre1 "Replaced \\*[ac]_[^\n].*with t_"
+PASS: gcc.dg/tree-ssa/ssa-fre-1.c scan-tree-dump fre1 "Replaced \\*c_[^\n].*with t_"
-PASS: gcc.target/arm/builtin-bswap-1.c scan-assembler-times rev16\\t 2
-PASS: gcc.target/arm/builtin-bswap-1.c scan-assembler-times revsh\\t 2
+FAIL: gcc.target/arm/builtin-bswap-1.c scan-assembler-times rev16\\t 2
+FAIL: gcc.target/arm/builtin-bswap-1.c scan-assembler-times revsh\\t 2
+WARNING: program timed out.
-WARNING: program timed out.
-WARNING: program timed out.
-WARNING: program timed out.
-WARNING: program timed out.

The full diff is at:
 http://cbuild.validation.linaro.org/build/gcc-linaro-4.7+bzr115050~christophe-lyon~backport_bswap16_perf_regression2/logs/x86_64-precise-cbuild449-oort3-xcortexa15hfr1/testsuite-diff.txt

The full testsuite results are at:
 http://cbuild.validation.linaro.org/build/gcc-linaro-4.7+bzr115050~christophe-lyon~backport_bswap16_perf_regression2/logs/x86_64-precise-cbuild449-oort3-xcortexa15hfr1/gcc-testsuite.txt

cbuild-checked: x86_64-precise-cbuild449-oort3-xcortexa15hfr1