[LLVMbugs] [Bug 2221] New: Assertion failure when inlining function.

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2221

           Summary: Assertion failure when inlining function.
           Product: libraries
           Version: 2.2
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Transformation Utilities
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: fvbommel at wxs.nl
                CC: llvmbugs at cs.uiuc.edu


I have some code that generates an assertion failure when I try to run "opt
-inline" on it:
-----
; ModuleID = 'out.bc'

define i64 (i64)* @getFn(i64) {
entry:
        %ptr = inttoptr i64 %0 to i64 (i64)*            ; <i64 (i64)*>
[#uses=1]
        ret i64 (i64)* %ptr
}

define i64 @fn() {
entry:
        %func = call i64 (i64)* (i64)* @getFn( i64 ptrtoint (i64 (i64)* @fn1 to
i64) )          ; <i64 (i64)*> [#uses=1]
        %call = call i64 %func( i64 0 )         ; <i64> [#uses=1]
        ret i64 %call
}

define i64 @fn1(i64) align 4 {
entry:
        ret i64 0
}
-----
$ opt out.bc -o opt.bc -f -inline
opt: CallGraph.cpp:288: void
llvm::CallGraphNode::removeCallEdgeTo(llvm::CallGraphNode*): Assertion `i &&
"Cannot find callee to remove!"' failed.
opt((anonymous namespace)::PrintStackTrace()+0x15)[0x769f75]
opt((anonymous namespace)::SignalHandler(int)+0x216)[0x76a306]
/lib/libc.so.6[0x2ad5f8b017d0]
/lib/libc.so.6(gsignal+0x35)[0x2ad5f8b01765]
/lib/libc.so.6(abort+0x110)[0x2ad5f8b031c0]
/lib/libc.so.6(__assert_fail+0xef)[0x2ad5f8afac2f]
opt(llvm::CallGraph::destroy()+0x0)[0x627ca0]
opt(llvm::InlineFunction(llvm::CallSite, llvm::CallGraph*, llvm::TargetData
const*)+0xc17)[0x5df9f7]
opt(llvm::Inliner::runOnSCC(std::vector<llvm::CallGraphNode*,
std::allocator<llvm::CallGraphNode*> > const&)+0x8c7)[0x4bafd7]
opt(CGPassManager::runOnModule(llvm::Module&)+0x5b8)[0x62a0c8]
opt(llvm::MPPassManager::runOnModule(llvm::Module&)+0x1c5)[0x70cd75]
opt(llvm::PassManagerImpl::run(llvm::Module&)+0x72)[0x70d062]
opt(llvm::PassManager::run(llvm::Module&)+0xc)[0x70d0bc]
opt(main+0x608)[0x493ac8]
/lib/libc.so.6(__libc_start_main+0xf4)[0x2ad5f8aedb44]
opt(sinh+0x41)[0x48cc49]
Aborted (core dumped)

$ opt --version
Low Level Virtual Machine (http://llvm.org/):
  llvm version 2.2
  Optimized build with assertions.


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