From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 21 Apr 2024 13:54:28 +0200
Subject: Adding upstream version 18.2.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/isa-l/igzip/encode_df.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 src/isa-l/igzip/encode_df.c

(limited to 'src/isa-l/igzip/encode_df.c')

diff --git a/src/isa-l/igzip/encode_df.c b/src/isa-l/igzip/encode_df.c
new file mode 100644
index 000000000..d26d1c942
--- /dev/null
+++ b/src/isa-l/igzip/encode_df.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <memory.h>
+#include <assert.h>
+
+#if __x86_64__  || __i386__ || _M_X64 || _M_IX86
+#ifdef _MSC_VER
+# include <intrin.h>
+#else
+# include <x86intrin.h>
+#endif
+#endif //__x86_64__  || __i386__ || _M_X64 || _M_IX86
+
+#include "encode_df.h"
+#include "bitbuf2.h"
+
+struct deflate_icf *encode_deflate_icf_base(struct deflate_icf *next_in,
+					    struct deflate_icf *end_in, struct BitBuf2 *bb,
+					    struct hufftables_icf *hufftables)
+{
+	struct huff_code lsym, dsym;
+
+	while (next_in < end_in && !is_full(bb)) {
+		lsym = hufftables->lit_len_table[next_in->lit_len];
+		dsym = hufftables->dist_lit_table[next_in->lit_dist];
+
+		// insert ll code, dist_code, and extra_bits
+		write_bits_unsafe(bb, lsym.code_and_extra, lsym.length);
+		write_bits_unsafe(bb, dsym.code, dsym.length);
+		write_bits_unsafe(bb, next_in->dist_extra, dsym.extra_bit_count);
+		flush_bits(bb);
+
+		next_in++;
+	}
+
+	return next_in;
+}
-- 
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