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| author | Bin Cheng <bin.cheng@arm.com> | 2017-07-18 11:40:38 +0000 |
|---|---|---|
| committer | Bin Cheng <amker@gcc.gnu.org> | 2017-07-18 11:40:38 +0000 |
| commit | 694dd0e408581c9e3fc0fab4864d9de054c7cc0c (patch) | |
| tree | 03d6bae865524150f12b20bb8f91b52fd55c7ca2 /gcc/tree-ssa-loop-niter.c | |
| parent | f94f48ffacd568e76d526f2cb8f7347c599affda (diff) | |
| download | gcc-694dd0e408581c9e3fc0fab4864d9de054c7cc0c.zip gcc-694dd0e408581c9e3fc0fab4864d9de054c7cc0c.tar.gz gcc-694dd0e408581c9e3fc0fab4864d9de054c7cc0c.tar.bz2 | |
re PR middle-end/81408 (Lots of new -Wunsafe-loop-optimizations warnings with 7 compared to 6)
PR target/81408
* tree-ssa-loop-niter.c (number_of_iterations_exit): Dump missed
optimization for loop niter analysis.
gcc/testsuite
* g++.dg/tree-ssa/pr81408.C: New.
* gcc.dg/tree-ssa/pr19210-1.c: Check dump message rather than warning.
From-SVN: r250304
Diffstat (limited to 'gcc/tree-ssa-loop-niter.c')
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 5a7cab5..1421002 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -2378,9 +2378,9 @@ number_of_iterations_exit (struct loop *loop, edge exit, return true; if (warn) - warning_at (gimple_location_safe (stmt), - OPT_Wunsafe_loop_optimizations, - "missed loop optimization, the loop counter may overflow"); + dump_printf_loc (MSG_MISSED_OPTIMIZATION, gimple_location_safe (stmt), + "missed loop optimization: niters analysis ends up " + "with assumptions.\n"); return false; } |