diff options
Diffstat (limited to 'compiler/dex/quick/arm/utility_arm.cc')
| -rw-r--r-- | compiler/dex/quick/arm/utility_arm.cc | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/compiler/dex/quick/arm/utility_arm.cc b/compiler/dex/quick/arm/utility_arm.cc index c3371cf329..25ea6941c0 100644 --- a/compiler/dex/quick/arm/utility_arm.cc +++ b/compiler/dex/quick/arm/utility_arm.cc @@ -1273,13 +1273,14 @@ void ArmMir2Lir::CountRefs(RefCounts* core_counts, RefCounts* fp_counts, size_t if (pc_rel_temp_ != nullptr) { // Now, if the dex cache array base temp is used only once outside any loops (weight = 1), - // avoid the promotion, otherwise boost the weight by factor 4 because the full PC-relative - // load sequence is 4 instructions long. + // avoid the promotion, otherwise boost the weight by factor 3 because the full PC-relative + // load sequence is 4 instructions long and by promoting the PC base we save up to 3 + // instructions per use. int p_map_idx = SRegToPMap(pc_rel_temp_->s_reg_low); if (core_counts[p_map_idx].count == 1) { core_counts[p_map_idx].count = 0; } else { - core_counts[p_map_idx].count *= 4; + core_counts[p_map_idx].count *= 3; } } } |