testsuite: Prevent unrolling of main in LTO test [PR116683]

In r15-3585-g9759f6299d9633cabac540e5c893341c708093ac I added a test which
started failing on PowerPC.  The test checks that we unroll exactly one loop
three times with the following:

// { dg-final { scan-ltrans-rtl-dump-times "Unrolled loop 3 times" 1 "loop2_unroll" } }

which passes on most targets.  However, on PowerPC, the loop in main
gets unrolled too, causing the scan-ltrans-rtl-dump-times check to fail
as the statement now appears twice in the dump.  I think the extra
unrolling is due to different unrolling heuristics in the rs6000 port.

This patch therefore explicitly tries to block the unrolling in main with an
appropriate #pragma.

gcc/testsuite/ChangeLog:

	PR testsuite/116683
	* g++.dg/ext/pragma-unroll-lambda-lto.C (main): Add #pragma to
	prevent unrolling of the setup loop.

0 files changed, 0 insertions, 0 deletions