llvm/bolt at b50500893ddb6870e37a90792acc5b1ed8b22bb1 - llvm

intel/llvm

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laith sakka b50500893d Lock-based parallelization for updateDebugInfo

Summary:
BOLT spends a decent amount of time creating patches to update
debug information when -update-debug-sections is passed.
In updateDebugInfo patches are created to update .debug_info
and .debug_abbrev sections while .debug_loc and .debug_ranges
contents are populated. This this diff uses a lock-based approach to
parallelize  updateDebugInfo functions and reduces the runtime of the
function by around 30%.

(cherry picked from FBD16352261)

2019-07-17 14:58:17 -07:00