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build: clear 50 warnings - pessimizing moves and null checks that cannot fail (#15408)

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* build: remove std::move that blocks copy elision

std::move wrapped around a temporary, or around a local being returned,
stops the compiler constructing it in place. Each edit is the fix clang
suggests, which is to delete the std::move call and keep its argument.

Three of the 39 sites save a move, the two return std::move(local) in
Print.cpp and TreeSupport.cpp:2749. The rest are equivalent either way
and match how the codebase already writes this elsewhere.

Clears 39 -Wpessimizing-move warnings.

* build: drop null checks on references and this

A reference cannot be bound to null and this cannot be null, so the
compiler folds these conditions to true and drops the guard. Seven are
if (&bitmap && bitmap.IsOk()), where IsOk() already does the work; two
test this directly. The guarded code runs either way, so removing the
dead operand changes nothing.

Clears 11 -Wundefined-bool-conversion warnings.
This commit is contained in:
Kris Austin
2026-08-28 08:05:59 -03:00
committed by GitHub
parent cc390f11ee
commit db29f570bd
20 changed files with 59 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libslic3r/ArcFitter.cpp
+6 -6
View File
@@ -57,24 +57,24 @@ void ArcFitter::do_arc_fitting(const Points& points, std::vector<PathFittingData
//BBS: can be fit as arc, then save arc data temperarily
last_arc = target_arc;
if (back_index == points.size() - 1) {
result.emplace_back(std::move(PathFittingData{ front_index,
result.emplace_back(PathFittingData{ front_index,
back_index,
last_arc.direction == ArcDirection::Arc_Dir_CCW ? EMovePathType::Arc_move_ccw : EMovePathType::Arc_move_cw,
last_arc }));
last_arc });
front_index = back_index;
}
} else {
if (back_index - front_index > 2) {
//BBS: althought current point_stack can't be fit as arc,
//but previous must can be fit if removing the top in stack, so save last arc
result.emplace_back(std::move(PathFittingData{ front_index,
result.emplace_back(PathFittingData{ front_index,
back_index - 1,
last_arc.direction == ArcDirection::Arc_Dir_CCW ? EMovePathType::Arc_move_ccw : EMovePathType::Arc_move_cw,
last_arc }));
last_arc });
} else {
//BBS: save the first segment as line move when 3 point-line can't be fit as arc move
if (result.empty() || result.back().path_type != EMovePathType::Linear_move)
result.emplace_back(std::move(PathFittingData{front_index, front_index + 1, EMovePathType::Linear_move, ArcSegment()}));
result.emplace_back(PathFittingData{front_index, front_index + 1, EMovePathType::Linear_move, ArcSegment()});
else if(result.back().path_type == EMovePathType::Linear_move)
result.back().end_point_index = front_index + 1;
}
@@ -87,7 +87,7 @@ void ArcFitter::do_arc_fitting(const Points& points, std::vector<PathFittingData
//BBS: handle the remain data
if (front_index != back_index) {
if (result.empty() || result.back().path_type != EMovePathType::Linear_move)
result.emplace_back(std::move(PathFittingData{front_index, back_index, EMovePathType::Linear_move, ArcSegment()}));
result.emplace_back(PathFittingData{front_index, back_index, EMovePathType::Linear_move, ArcSegment()});
else if (result.back().path_type == EMovePathType::Linear_move)
result.back().end_point_index = back_index;
}