[LLVMbugs] [Bug 15620] New: fpcmp skews lines in comparison

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu Mar 28 12:55:52 PDT 2013


            Bug ID: 15620
           Summary: fpcmp skews lines in comparison
           Product: Test Suite
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Nightly Tester
          Assignee: unassignedbugs at nondot.org
          Reporter: renato.golin at linaro.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10251
  --> http://llvm.org/bugs/attachment.cgi?id=10251&action=edit
fpcmp + conflicting files

The attached example (result from an ARM run of sqlite3) shows that fpcmp is
comparing different lines (one immediate after the other) in both mixed and
pure FP outputs.

$ ./fpcmp -r 1.0e-9 sqlite3.out-nat.fp sqlite3.out-simple.fp 
./fpcmp: Compared: 2.616701e+05 and 2.573593e+05
abs. diff = 4.310775e+03 rel.diff = 1.675002e-02
Out of tolerance: rel/abs: 1.000000e-09/0.000000e+00

$ ./fpcmp -r 1.0e-9 sqlite3.out-nat sqlite3.out-simple
./fpcmp: Compared: 4.910000e+02 and 2.573593e+05
abs. diff = 2.568683e+05 rel.diff = 9.980922e-01
Out of tolerance: rel/abs: 1.000000e-09/0.000000e+00

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