From 842f49f34464440abb2799ef007959cc5e8b7cf8 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Tue, 16 Dec 2025 19:23:33 +0100
Subject: x86-64/emit: implement single-exit-point ret with jump threading

---
 ir/builder.c  | 2 +-
 ir/regalloc.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

(limited to 'ir')

diff --git a/ir/builder.c b/ir/builder.c
index 3ddb5a6..36f955c 100644
--- a/ir/builder.c
+++ b/ir/builder.c
@@ -218,7 +218,7 @@ useblk(struct function *fn, struct block *blk)
       blk->lnext = fn->entry;
       blk->lprev = fn->entry->lprev;
       blk->lprev->lnext = blk;
-      blk->id = ++fn->nblk;
+      blk->id = fn->nblk++;
       fn->entry->lprev = blk;
    }
    fn->curblk = blk;
diff --git a/ir/regalloc.c b/ir/regalloc.c
index 691793e..794cdd6 100644
--- a/ir/regalloc.c
+++ b/ir/regalloc.c
@@ -1233,6 +1233,8 @@ fini(struct rega *ra)
             freeblk(fn, blk);
             --id;
          }
+      } else if (allnops) {
+         vfree(&blk->ins);
       }
    } while ((blk = blk->lnext) != fn->entry);
 }
-- 
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