From 2d0d4a0be9732b58d796809f5b6ad4e00d536861 Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <yamamoto@midokura.com>
Date: Thu, 16 Nov 2023 19:48:06 +0900
Subject: [PATCH] Remove unused JitBitmap (#2775)

Fixes: https://github.com/bytecodealliance/wasm-micro-runtime/issues/2754
---
 core/iwasm/fast-jit/jit_utils.c | 19 -------
 core/iwasm/fast-jit/jit_utils.h | 94 ---------------------------------
 2 files changed, 113 deletions(-)
 delete mode 100644 core/iwasm/fast-jit/jit_utils.c

diff --git a/core/iwasm/fast-jit/jit_utils.c b/core/iwasm/fast-jit/jit_utils.c
deleted file mode 100644
index 57a3e8f6..00000000
--- a/core/iwasm/fast-jit/jit_utils.c
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (C) 2021 Intel Corporation.  All rights reserved.
- * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
- */
-
-#include "jit_utils.h"
-
-JitBitmap *
-jit_bitmap_new(uintptr_t begin_index, unsigned bitnum)
-{
-    JitBitmap *bitmap;
-
-    if ((bitmap = jit_calloc(offsetof(JitBitmap, map) + (bitnum + 7) / 8))) {
-        bitmap->begin_index = begin_index;
-        bitmap->end_index = begin_index + bitnum;
-    }
-
-    return bitmap;
-}
diff --git a/core/iwasm/fast-jit/jit_utils.h b/core/iwasm/fast-jit/jit_utils.h
index c165b7a3..a533c70b 100644
--- a/core/iwasm/fast-jit/jit_utils.h
+++ b/core/iwasm/fast-jit/jit_utils.h
@@ -12,20 +12,6 @@
 extern "C" {
 #endif
 
-/**
- * A simple fixed size bitmap.
- */
-typedef struct JitBitmap {
-    /* The first valid bit index.  */
-    uintptr_t begin_index;
-
-    /* The last valid bit index plus one.  */
-    uintptr_t end_index;
-
-    /* The bitmap.  */
-    uint8 map[1];
-} JitBitmap;
-
 static inline void *
 jit_malloc(unsigned int size)
 {
@@ -49,86 +35,6 @@ jit_free(void *ptr)
         wasm_runtime_free(ptr);
 }
 
-/**
- * Create a new bitmap.
- *
- * @param begin_index the first valid bit index
- * @param bitnum maximal bit number of the bitmap.
- *
- * @return the new bitmap if succeeds, NULL otherwise.
- */
-JitBitmap *
-jit_bitmap_new(uintptr_t begin_index, unsigned bitnum);
-
-/**
- * Delete a bitmap.
- *
- * @param bitmap the bitmap to be deleted
- */
-static inline void
-jit_bitmap_delete(JitBitmap *bitmap)
-{
-    jit_free(bitmap);
-}
-
-/**
- * Check whether the given index is in the range of the bitmap.
- *
- * @param bitmap the bitmap
- * @param n the bit index
- *
- * @return true if the index is in range, false otherwise
- */
-static inline bool
-jit_bitmap_is_in_range(JitBitmap *bitmap, unsigned n)
-{
-    return n >= bitmap->begin_index && n < bitmap->end_index;
-}
-
-/**
- * Get a bit in the bitmap
- *
- * @param bitmap the bitmap
- * @param n the n-th bit to be get
- *
- * @return value of the bit
- */
-static inline int
-jit_bitmap_get_bit(JitBitmap *bitmap, unsigned n)
-{
-    unsigned idx = n - bitmap->begin_index;
-    bh_assert(n >= bitmap->begin_index && n < bitmap->end_index);
-    return (bitmap->map[idx / 8] >> (idx % 8)) & 1;
-}
-
-/**
- * Set a bit in the bitmap.
- *
- * @param bitmap the bitmap
- * @param n the n-th bit to be set
- */
-static inline void
-jit_bitmap_set_bit(JitBitmap *bitmap, unsigned n)
-{
-    unsigned idx = n - bitmap->begin_index;
-    bh_assert(n >= bitmap->begin_index && n < bitmap->end_index);
-    bitmap->map[idx / 8] |= 1 << (idx % 8);
-}
-
-/**
- * Clear a bit in the bitmap.
- *
- * @param bitmap the bitmap
- * @param n the n-th bit to be cleared
- */
-static inline void
-jit_bitmap_clear_bit(JitBitmap *bitmap, unsigned n)
-{
-    unsigned idx = n - bitmap->begin_index;
-    bh_assert(n >= bitmap->begin_index && n < bitmap->end_index);
-    bitmap->map[idx / 8] &= ~(1 << (idx % 8));
-}
-
 #ifdef __cplusplus
 }
 #endif