Check scan_vars_num on MIR_MAX_COALESCE_VARS in consider_move_vars_only.

vnmakarov · vnmakarov · commit 19d4a622c525 · 2024-06-14T15:09:02.000-04:00
diff --git a/mir-gen.c b/mir-gen.c
@@ -6131,7 +6131,7 @@ static int consider_move_vars_only (gen_ctx_t gen_ctx) {
   bitmap_clear (temp_bitmap);
   scan_vars_num = 0;
   scan_collected_moves (gen_ctx);
-  return scan_vars_num > 0;
+  return scan_vars_num > 0 && scan_vars_num < MIR_MAX_COALESCE_VARS;
 }
 
 static void add_bb_insn_dead_vars (gen_ctx_t gen_ctx) {

Original file line number	Diff line number	Diff line change
`@@ -6131,7 +6131,7 @@ static int consider_move_vars_only (gen_ctx_t gen_ctx) {`
`6131`	`6131`	`bitmap_clear (temp_bitmap);`
`6132`	`6132`	`scan_vars_num = 0;`
`6133`	`6133`	`scan_collected_moves (gen_ctx);`
`6134`		`- return scan_vars_num > 0;`
	`6134`	`+ return scan_vars_num > 0 && scan_vars_num < MIR_MAX_COALESCE_VARS;`
`6135`	`6135`	`}`
`6136`	`6136`
`6137`	`6137`	`static void add_bb_insn_dead_vars (gen_ctx_t gen_ctx) {`