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[GHC] #7617: LLVM backend broken on 32bit OS X (when 64bit host)
by GHC 23 Jan '13

23 Jan '13

#7617: LLVM backend broken on 32bit OS X (when 64bit host) -------------------------------+-------------------------------------------- Reporter: dterei | Owner: dterei Type: bug | Status: new Priority: normal | Component: Compiler (LLVM) Version: | Keywords: Os: MacOS X | Architecture: x86_64 (amd64) Failure: Compile-time crash | Blockedby: Blocking: | Related: -------------------------------+-------------------------------------------- OSX 32bit GHC is broken when running on a 64bit host. This is as we aren't passing the correct flags through to clang (the assembler used) to indicate it should compile as 32bit instead of 64bit... -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7617> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #7571: LLVM codegen does not handle integer literals in branch conditionals.
by GHC 23 Jan '13

23 Jan '13

#7571: LLVM codegen does not handle integer literals in branch conditionals. --------------------------------+------------------------------------------- Reporter: thoughtpolice | Owner: thoughtpolice Type: bug | Status: new Priority: normal | Component: Compiler (LLVM) Version: 7.6.1 | Keywords: llvm, codegen Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: Building GHC failed | Blockedby: Blocking: | Related: --------------------------------+------------------------------------------- When compiling GHC HEAD on my ODROID-U2 ARM machine, running Ubuntu 12.10, with LLVM 3.3svn, I get this error while building part of the RTS: {{{ linaro@linaro-ubuntu-desktop ~/code/ghc % "inplace/bin/ghc-stage1" -static -prof -H32m -O -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist- ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -package-name rts -dcmm-lint -i -irts -irts/dist/build -irts/dist/build/autogen -Irts/dist/build -Irts/dist/build/autogen -optc-O2 -O2 -c rts/StgStdThunks.cmm -o rts/dist/build/StgStdThunks.p_o You are using a new version of LLVM that hasn't been tested yet! We will try though... ghc-stage1: panic! (the 'impossible' happened) (GHC version 7.7.20130111 for arm-unknown-linux): LlvmCodeGen.CodeGen.genCondBranch: Cond expr not bool! (i32 1) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug linaro@linaro-ubuntu-desktop ~/code/ghc % }}} The reason is that StgStdThunks.cmm does something like: {{{ #ifdef FOO #define THING(x) 1 #else #define THING(x) do_something((x)) #endif ... if (THING(x)) { ... } }}} Depending on if FOO is defined, the conditional could have an expression or a literal in the branch head. This is directly fed into the backend from the compiler. LlvmCodeGen.CodeGen.genLit does not properly narrow the type of the literal from i32 to i1 when generating the code, causing a compiler panic. We would have likely never seen this outside hand-written Cmm, since the code generator would otherwise trivially eliminate such branches in the optimizers. Coincidentally, I would imagine this failure would mean that the compiler has not been able to bootstrap with LLVM for quite some time. I haven't bisected this, but I'd speculate it was some time around the switch to the NCG. I believe I have a fix for this that I am testing on my machine. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7571> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1509: Make unboxed tuples more supported
by GHC 23 Jan '13

23 Jan '13

#1509: Make unboxed tuples more supported -------------------------------+-------------------------------------------- Reporter: guest | Owner: Type: feature request | Status: closed Priority: low | Milestone: _|_ Component: Compiler | Version: 6.6.1 Resolution: fixed | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Difficulty: Unknown Testcase: | Blockedby: Blocking: | Related: -------------------------------+-------------------------------------------- Changes (by simonmar): * status: new => closed * resolution: => fixed Comment: Let's call it fixed. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1509#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7134: ghc-7.6.0.20120810-x86_64-windows.exe -> internal error R_X86_64_PC32
by GHC 23 Jan '13

23 Jan '13

#7134: ghc-7.6.0.20120810-x86_64-windows.exe -> internal error R_X86_64_PC32 -------------------------------+-------------------------------------------- Reporter: cetinsert | Owner: igloo Type: bug | Status: new Priority: highest | Milestone: 7.8.1 Component: GHCi | Version: 7.6.1-rc1 Keywords: R_X86_64_PC32 | Os: Windows Architecture: x86_64 (amd64) | Failure: GHCi crash Difficulty: Unknown | Testcase: Blockedby: 3658 | Blocking: Related: | -------------------------------+-------------------------------------------- Comment(by simonmar): #7357 is already closed as a dup of this one. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7134#comment:17> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1544: Derived Read instances for recursive datatypes with infix constructors are too inefficient
by GHC 22 Jan '13

22 Jan '13

#1544: Derived Read instances for recursive datatypes with infix constructors are too inefficient -------------------------------------+-------------------------------------- Reporter: jcpetruzza@… | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.6.2 Component: Compiler | Version: 6.6.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | -------------------------------------+-------------------------------------- Comment(by morabbin): Any progress on adapting Doaitse's work for inclusion? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1544#comment:28> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1532: Implicit parameters are not available in breakpoints
by GHC 22 Jan '13

22 Jan '13

#1532: Implicit parameters are not available in breakpoints ---------------------------------+------------------------------------------ Reporter: mnislaih | Owner: Type: feature request | Status: new Priority: normal | Milestone: _|_ Component: GHCi | Version: 6.7 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: break015 Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by morabbin): Bump; still of interest? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1532#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1547: Arity can decrease with -prof
by GHC 22 Jan '13

22 Jan '13

#1547: Arity can decrease with -prof ---------------------------------+------------------------------------------ Reporter: igloo | Owner: Type: bug | Status: new Priority: normal | Milestone: _|_ Component: Profiling | Version: 6.6.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: stm package/tests/conc052 Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by morabbin): * failure: => None/Unknown Comment: Bump; close as fixed? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1547#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1530: debugging :steps inside TH spliced code need to be bypassed
by GHC 22 Jan '13

22 Jan '13

#1530: debugging :steps inside TH spliced code need to be bypassed ---------------------------------+------------------------------------------ Reporter: mnislaih | Owner: Type: bug | Status: new Priority: normal | Milestone: _|_ Component: GHCi | Version: 6.7 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: dynbrk005 Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by morabbin): * failure: => None/Unknown Comment: Seems like this is still happening (for dynbrk005 anyway) in 7.6.1. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1530#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1524: stdcall fails on MacOS
by GHC 22 Jan '13

22 Jan '13

#1524: stdcall fails on MacOS -------------------------+-------------------------------------------------- Reporter: chak | Owner: Type: bug | Status: new Priority: lowest | Milestone: _|_ Component: Compiler | Version: 6.7 Keywords: | Os: MacOS X Architecture: x86 | Failure: None/Unknown Difficulty: Unknown | Testcase: ffi012, 1288, 2276, 2276_ghci Blockedby: | Blocking: Related: | -------------------------+-------------------------------------------------- Comment(by morabbin): HEAD on Mac OS X (darwin_x86_64) passes the test cases; I'm guessing this has been fixed a while. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1524#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1526: -fobject-code doesn't apply to expressions typed at the prompt
by GHC 22 Jan '13

22 Jan '13

#1526: -fobject-code doesn't apply to expressions typed at the prompt ---------------------------------+------------------------------------------ Reporter: sorear | Owner: Type: bug | Status: new Priority: normal | Milestone: _|_ Component: Compiler | Version: 6.7 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by morabbin): * failure: => None/Unknown Comment: Bump; still relevant. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1526#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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