[LLVMbugs] [Bug 11090] New: Extremely slow compilation + high memory usage in "Loop Strength Reduction"

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11090

           Summary: Extremely slow compilation + high memory usage in
                    "Loop Strength Reduction"
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: Loop Optimizer
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: joerg at NetBSD.org
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=7423)
 --> (http://llvm.org/bugs/attachment.cgi?id=7423)
Test case

Compile the attached file, it will require > 1GB memory and crash at some point
if it doesn't get that.

1.    <eof> parser at end of file
2.    Code generation
3.    Running pass 'Function Pass Manager' on module 'crypt_sha512-23056a.i'.
4.    Running pass 'Loop Pass Manager' on function '@php_sha512_crypt_r'
5.    Running pass 'Loop Strength Reduction' on basic block '%while.body877'

Source is from current PHP, so it is high-profile.

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