[llvm-bugs] [Bug 34652] New: remove inlined functions for faster compilation of Rust

via llvm-bugs llvm-bugs at lists.llvm.org
Sun Sep 17 23:18:59 PDT 2017


https://bugs.llvm.org/show_bug.cgi?id=34652

            Bug ID: 34652
           Summary: remove inlined functions for faster compilation of
                    Rust
           Product: new-bugs
           Version: 4.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: andjo403 at Hotmail.com
                CC: llvm-bugs at lists.llvm.org

For Rust I see significant compile time improvements (15-23%) if I add 
a Global dead code elimination pass after the inlining pass in
PassManagerBuilder::populateModulePassManager (line 480).

I do not know if this is the correct place to add this pass 
or if there is some better way to do this.

thankful for any help with making this a better solution.

for more info see ticket and PR in rust
https://github.com/rust-lang/rust/issues/44655
https://github.com/rust-lang/llvm/pull/92

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