[LLVMbugs] [Bug 3083] New: JIT: provide Garbage Collector callback if run out of stubs

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=3083

           Summary: JIT: provide Garbage Collector callback if run out of
                    stubs
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu, nicolas.geoffray at lip6.fr


Created an attachment (id=2215)
 --> (http://llvm.org/bugs/attachment.cgi?id=2215)
testcase to show problem

Apply the attached patch to example/HowToUseJIT, and run:

"We just constructed this LLVM module:

; ModuleID = 'test'

define i32 @add1(i32 %AnArg) {
EntryBlock:
        %addresult = add i32 1, %AnArg          ; <i32> [#uses=1]
        ret i32 %addresult
}

define i32 @foo() {
EntryBlock:
        %add1 = tail call i32 @add1(i32 10)             ; <i32> [#uses=1]
        ret i32 %add1
}


Running foo: JIT ran out of memory for function stubs!
Aborted"

The JIT could provide a callback when it runs out of memory, so that the
Garbage Collector can be run, that could possibly free up some memory.
This would especially be useful for VMKit.


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