#13518: CMM compiles with 8.0.2, fails with git HEAD -------------------------------------+------------------------------------- Reporter: erikd | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple error/warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by slyfox): * cc: slyfox (added) Comment: I've found a few issues: - the implementations are slightly nonsymmetric (floatToWord# lacked F_ cast) - i suspect cmm won't allow you to have non-Word sized integrals (the first error you get) - integral return type should also be Word-sized That compiles for me on both 32/64 targets: {{{ #include "Cmm.h" stg_word32ToFloatzh(W_ w) { F_ f; P_ ptr; STK_CHK_GEN_N (1); reserve 1 = ptr { I32[ptr] = W_TO_INT(w); f = F_[ptr]; } return (f); } stg_floatToWord32zh(F_ f) { W_ w; P_ ptr; STK_CHK_GEN_N (1); reserve 1 = ptr { F_[ptr] = f; w = TO_W_(I32[ptr]); } return (w); } }}} {{{ $ m68k-unknown-linux-gnu-ghc -c a.cmm -dcmm-lint -O2 $ powerpc64le-unknown-linux-gnu-ghc -c a.cmm -dcmm-lint -O2 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13518#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler