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| author | Augie Fackler <augie@google.com> | 2023-07-12 17:07:34 -0400 |
|---|---|---|
| committer | Augie Fackler <augie@google.com> | 2023-09-08 10:45:29 -0400 |
| commit | af9e55068c2e38b1f7afc7f7374a5a53c59b2001 (patch) | |
| tree | 859196de0a40ae109fcf81ce2a90f8d13f1cf177 /compiler/rustc_codegen_llvm/src/llvm/ffi.rs | |
| parent | 9ad0396a34bdfa11fe0e4f8636f82da165ffad01 (diff) | |
| download | rust-af9e55068c2e38b1f7afc7f7374a5a53c59b2001.tar.gz rust-af9e55068c2e38b1f7afc7f7374a5a53c59b2001.zip | |
debuginfo: add compiler option to allow compressed debuginfo sections
LLVM already supports emitting compressed debuginfo. In debuginfo=full builds, the debug section is often a large amount of data, and it typically compresses very well (3x is not unreasonable.) We add a new knob to allow debuginfo to be compressed when the matching LLVM functionality is present. Like clang, if a known-but-disabled compression mechanism is requested, we disable compression and emit uncompressed debuginfo sections. The API is different enough on older LLVMs we just pretend the support is missing on LLVM older than 16.
Diffstat (limited to 'compiler/rustc_codegen_llvm/src/llvm/ffi.rs')
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/llvm/ffi.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs index 8e96410deaf..2ebfdae39e8 100644 --- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs +++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs @@ -2131,6 +2131,7 @@ extern "C" { RelaxELFRelocations: bool, UseInitArray: bool, SplitDwarfFile: *const c_char, + DebugInfoCompression: *const c_char, ForceEmulatedTls: bool, ArgsCstrBuff: *const c_char, ArgsCstrBuffLen: usize, @@ -2366,6 +2367,10 @@ extern "C" { pub fn LLVMRustIsBitcode(ptr: *const u8, len: usize) -> bool; + pub fn LLVMRustLLVMHasZlibCompressionForDebugSymbols() -> bool; + + pub fn LLVMRustLLVMHasZstdCompressionForDebugSymbols() -> bool; + pub fn LLVMRustGetSymbols( buf_ptr: *const u8, buf_len: usize, |