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[ELF] Compress debug sections with level 1 instead of level 3

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Debug sections are generally compressed pretty well with level 1,
so it is. Here is the comparison in lld: https://reviews.llvm.org/D70658
This commit is contained in:
Rui Ueyama 2022-01-24 11:32:26 +09:00
parent 42b7eb87a1
commit 3322ff6e7c
1 changed files with 3 additions and 2 deletions
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5
compress.cc
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@ -35,12 +35,13 @@ static std::vector<std::string_view> split(std::string_view input) {
static std::vector<u8> do_compress(std::string_view input) {
// Initialize zlib stream. Since debug info is generally compressed
// pretty well, we chose compression level 3.
// pretty well with lower compression levels, we chose compression
// level 1.
z_stream strm;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
int r = deflateInit2(&strm, 3, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY);
int r = deflateInit2(&strm, 1, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY);
assert(r == Z_OK);
// Set an input buffer