#9430: implement more arithmetic operations natively in the LLVM backend -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (LLVM) | Version: 7.9 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Moderate (less | Type of failure: Runtime than a day) | performance bug Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- There are a number of arithmetic operations that have native implementations on x86 but use the generic fallback on LLVM. Implementing these with LLVM intrinsics could improve small Integer performance on ARM substantially! {{{ MO_Add2 @llvm.uadd.with.overflow.* MO_AddIntC @llvm.sadd.with.overflow.* MO_SubIntC @llvm.ssub.with.overflow.* MO_U_Mul2 mul i64/i128? MO_U_QuotRem2 udiv i64/i128? }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9430 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler