#9425: ghc-HEAD (only in -O -fllvm aka 'optllvm') prunes yield in -fno-omit- yields mode -------------------------------------+------------------------------------- Reporter: slyfox | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Resolution: | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by rwbarton): LLVM assumes that `HpLim` (which is located at `0x358(%r13)`) is not changing during the loop. We need to emit whatever LLVM assembly language construction tells LLVM to assume that `HpLim` might change (`load volatile` perhaps?) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9425#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler