diff options
Diffstat (limited to 'gcc-4.9/gcc/omp-low.c')
| -rw-r--r-- | gcc-4.9/gcc/omp-low.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/gcc-4.9/gcc/omp-low.c b/gcc-4.9/gcc/omp-low.c index 7cc398ea5..11bb2d35a 100644 --- a/gcc-4.9/gcc/omp-low.c +++ b/gcc-4.9/gcc/omp-low.c @@ -10124,7 +10124,20 @@ lower_omp_1 (gimple_stmt_iterator *gsi_p, omp_context *ctx) if ((ctx || task_shared_vars) && walk_gimple_op (stmt, lower_omp_regimplify_p, ctx ? NULL : &wi)) - gimple_regimplify_operands (stmt, gsi_p); + { + /* Just remove clobbers, this should happen only if we have + "privatized" local addressable variables in SIMD regions, + the clobber isn't needed in that case and gimplifying address + of the ARRAY_REF into a pointer and creating MEM_REF based + clobber would create worse code than we get with the clobber + dropped. */ + if (gimple_clobber_p (stmt)) + { + gsi_replace (gsi_p, gimple_build_nop (), true); + break; + } + gimple_regimplify_operands (stmt, gsi_p); + } break; } } |