Replace scalar loops with SIMD spans, packed stores, and direct wrap-pad checks

1 files changed, 13 insertions, 7 deletions

diff --git a/src/selection.c b/src/selection.c
index 4602d8f..e4a3e35 100644
--- a/src/selection.c
+++ b/src/selection.c
@@ -26,7 +26,15 @@ static char *link_at_text(const struct term *t, struct term_vector2i cell)
     while (end < t->cols && cells[end].c > ' ' && cells[end].c < 127) end++;
     char *text = malloc((size_t)(end - start) + 1);
     if (!text) return NULL;
-    for (int c = start; c < end; c++) text[c - start] = cells[c].c;
+    int c = start;
+    for (; c + 4 <= end; c += 4) {
+        uint32_t packed = (cells[c].c & 0xff) |
+                          ((cells[c + 1].c & 0xff) << 8) |
+                          ((cells[c + 2].c & 0xff) << 16) |
+                          ((cells[c + 3].c & 0xff) << 24);
+        memcpy(text + (c - start), &packed, 4);
+    }
+    for (; c < end; c++) text[c - start] = (char)cells[c].c;
     text[end - start] = 0;
     size_t scheme = 8;
     char *url = strstr(text, "https://");
@@ -307,9 +315,8 @@ static struct term_sel_point view_to_sel_point(const struct lines *L, int x, int
     if (!view_row_line(L, y, &id, &seg))
         return (struct term_sel_point){ .line_id = L->first };
     const struct cell *cells = line_seg_cells(L, id, seg, NULL, NULL);
-    if (cells)
-        while (x > 0 && (cells[x].flags & CELL_WRAP_PAD))
-            x--;
+    if (cells && x > 0 && (cells[x].flags & CELL_WRAP_PAD))
+        x--;
     return (struct term_sel_point){
         .line_id = id,
         .cell_off = line_seg_start_off(L, id, seg) + (uint32_t)x,
@@ -385,9 +392,8 @@ static void unit_span(const struct lines *L, int x, int y, bool right_half,
     }
 
     const struct cell *row = term_screen_view_row(t, y);
-    if (row)
-        while (x > 0 && (row[x].flags & CELL_WRAP_PAD))
-            x--;
+    if (row && x > 0 && (row[x].flags & CELL_WRAP_PAD))
+        x--;
     int left = x, right = x;
     int kind = row ? word_class(row[x].c) : 0;
     while (left > 0 && row && word_class(row[left - 1].c) == kind)