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| author | Alexandre Ganea <37383324+aganea@users.noreply.github.com> | 2023-10-05 22:33:58 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-10-05 22:33:58 -0400 |
| commit | 356139bd027d65b6843cbd4eda642104cfe6cf8f (patch) | |
| tree | ce0d6466eed7506ac67a852a5b082c601a2e8e68 /llvm/lib/Support/FileOutputBuffer.cpp | |
| parent | 84cbd9f4ffba17a74516d1afa442568dc54eabb1 (diff) | |
| download | llvm-356139bd027d65b6843cbd4eda642104cfe6cf8f.zip llvm-356139bd027d65b6843cbd4eda642104cfe6cf8f.tar.gz llvm-356139bd027d65b6843cbd4eda642104cfe6cf8f.tar.bz2 | |
[LLD][COFF] Add support for `--time-trace` (#68236)
This adds support for generating Chrome-tracing .json profile traces in
the LLD COFF driver.
Also add the necessary time scopes, so that the profile trace shows in
great detail which tasks are executed.
As an example, this is what we see when linking a Unreal Engine
executable:
Diffstat (limited to 'llvm/lib/Support/FileOutputBuffer.cpp')
| -rw-r--r-- | llvm/lib/Support/FileOutputBuffer.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Support/FileOutputBuffer.cpp b/llvm/lib/Support/FileOutputBuffer.cpp index c11ee59..58a06a3 100644 --- a/llvm/lib/Support/FileOutputBuffer.cpp +++ b/llvm/lib/Support/FileOutputBuffer.cpp @@ -14,6 +14,7 @@ #include "llvm/Support/Errc.h" #include "llvm/Support/FileSystem.h" #include "llvm/Support/Memory.h" +#include "llvm/Support/TimeProfiler.h" #include <system_error> #if !defined(_MSC_VER) && !defined(__MINGW32__) @@ -43,6 +44,8 @@ public: size_t getBufferSize() const override { return Buffer.size(); } Error commit() override { + llvm::TimeTraceScope timeScope("Commit buffer to disk"); + // Unmap buffer, letting OS flush dirty pages to file on disk. Buffer.unmap(); |