#9577: String literals are wasting space -------------------------------------+------------------------------------- Reporter: xnyhps | Owner: xnyhps Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 7.8.2 (NCG) | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: Runtime | Related Tickets: performance bug | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by xnyhps): Documenting what I found about merging duplicate string constants in GCC/clang: Turning on `-fmerge-constants` with GCC changes the generated assembly: {{{ - .section .rodata + .section .rodata.str1.1,"aMS",@progbits,1 }}} As far as I can tell, this stands for: * `a` sets `SHF_ALLOC` * `M` sets `SHF_MERGE` * `S` sets `SHF_STRINGS` * `@progbits` sets `SHT_PROGBITS` * The `1` indicates the size of each entry (character) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9577#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler