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| author | Patrick Walton <pcwalton@fb.com> | 2022-11-05 01:08:57 -0700 |
|---|---|---|
| committer | khei4 <kk.asano.luxy@gmail.com> | 2023-07-16 22:56:04 +0900 |
| commit | 2d47816cbaebb3b8f400b11fa122feae00fd5c58 (patch) | |
| tree | 790c456908b74596d709a0e5fb40dc812d72fd96 /compiler/rustc_codegen_llvm/src/llvm_util.rs | |
| parent | 55be59d2cefe33529a07b0e011384658c9240035 (diff) | |
| download | rust-2d47816cbaebb3b8f400b11fa122feae00fd5c58.tar.gz rust-2d47816cbaebb3b8f400b11fa122feae00fd5c58.zip | |
rustc_llvm: Add a `-Z print-llvm-stats` option to expose LLVM statistics.
LLVM has a neat [statistics] feature that tracks how often optimizations kick in. It's very handy for optimization work. Since we expose the LLVM pass timings, I thought it made sense to expose the LLVM statistics too. [statistics]: https://llvm.org/docs/ProgrammersManual.html#the-statistic-class-stats-option
Diffstat (limited to 'compiler/rustc_codegen_llvm/src/llvm_util.rs')
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/llvm_util.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs index 03be0654b50..12649de5866 100644 --- a/compiler/rustc_codegen_llvm/src/llvm_util.rs +++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs @@ -110,6 +110,10 @@ unsafe fn configure_llvm(sess: &Session) { // Use non-zero `import-instr-limit` multiplier for cold callsites. add("-import-cold-multiplier=0.1", false); + if sess.print_llvm_stats() { + add("-stats", false); + } + for arg in sess_args { add(&(*arg), true); } |