Lab6: fix performance test freeze by only zero-initializing local variables with initializers

2026-06-01 16:00:00 +08:00
parent 6f48016c10
commit 233c163271
2 changed files with 6 additions and 4 deletions
--- a/src/irgen/IRGenDecl.cpp
+++ b/src/irgen/IRGenDecl.cpp
@@ -208,8 +208,10 @@ std::any IRGenImpl::visitVarDef(SysYParser::VarDefContext* ctx) {
    slot = module_.CreateGlobalValue(name, StorageType(ty), init);
  } else {
    slot = builder_.CreateAlloca(StorageType(ty), name);
-    ZeroInitializeLocal(slot, ty);
-    if (ctx->initValue()) EmitLocalInitValue(slot, ty, ctx->initValue());
+    if (ctx->initValue()) {
+      ZeroInitializeLocal(slot, ty);
+      EmitLocalInitValue(slot, ty, ctx->initValue());
+    }
  }

  storage_map_[ctx] = slot;