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Explicitly register instrprof pass

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Don't use "passes" for this purpose, explicitly insert it into
the correct place in the pipeline instead.
This commit is contained in:
Nikita Popov
2021-04-05 10:45:04 +02:00
parent 0318883cd6
commit 5ecbe7fcf8
4 changed files with 20 additions and 8 deletions
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7
compiler/rustc_codegen_llvm/src/back/write.rs
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@@ -472,6 +472,7 @@ pub(crate) unsafe fn optimize_with_new_llvm_pass_manager(
sanitizer_options.as_ref(),
pgo_gen_path.as_ref().map_or(std::ptr::null(), |s| s.as_ptr()),
pgo_use_path.as_ref().map_or(std::ptr::null(), |s| s.as_ptr()),
config.instrument_coverage,
llvm_selfprofiler,
selfprofile_before_pass_callback,
selfprofile_after_pass_callback,
@@ -545,7 +546,7 @@ pub(crate) unsafe fn optimize(
llvm::LLVMRustAddPass(fpm, find_pass("lint").unwrap());
continue;
}
if pass_name == "insert-gcov-profiling" || pass_name == "instrprof" {
if pass_name == "insert-gcov-profiling" {
// Instrumentation must be inserted before optimization,
// otherwise LLVM may optimize some functions away which
// breaks llvm-cov.
@@ -566,6 +567,10 @@ pub(crate) unsafe fn optimize(
}
}
if config.instrument_coverage {
llvm::LLVMRustAddPass(mpm, find_pass("instrprof").unwrap());
}
add_sanitizer_passes(config, &mut extra_passes);
// Some options cause LLVM bitcode to be emitted, which uses ThinLTOBuffers, so we need