[LLVMbugs] [Bug 19429] New: Mesa llvmpipe lp_test_arit regression

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=19429

            Bug ID: 19429
           Summary: Mesa llvmpipe lp_test_arit regression
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: vlee at freedesktop.org
                CC: brian.e.paul at gmail.com, grosbach at apple.com,
                    jfonseca at vmware.com, llvmbugs at cs.uiuc.edu,
                    sroland at vmware.com
    Classification: Unclassified

Mesa unit test lp_test_arit now fails starting with llvm-3.5svn r206094.

$ ./build/linux-x86_64-debug/bin/lp_test_arit -v
neg(-inf): ref = inf, out = inf, precision = 24.000000 bits, PASS
neg(-60): ref = 60, out = 60, precision = 24.000000 bits, PASS
neg(-4): ref = 4, out = 4, precision = 24.000000 bits, PASS
neg(-2): ref = 2, out = 2, precision = 24.000000 bits, PASS
neg(-1): ref = 1, out = 1, precision = 24.000000 bits, PASS
neg(-1.00000001e-07): ref = 1.00000001e-07, out = 1.00000001e-07, precision =
24.000000 bits, PASS
neg(0): ref = -0, out = -0, precision = 24.000000 bits, PASS
neg(1.00000001e-07): ref = -1.00000001e-07, out = -1.00000001e-07, precision =
24.000000 bits, PASS
neg(0.00999999978): ref = -0.00999999978, out = -0.00999999978, precision =
24.000000 bits, PASS
neg(0.100000001): ref = -0.100000001, out = -0.100000001, precision = 24.000000
bits, PASS
neg(0.899999976): ref = -0.899999976, out = -0.899999976, precision = 24.000000
bits, PASS
neg(0.99000001): ref = -0.99000001, out = -0.99000001, precision = 24.000000
bits, PASS
neg(1): ref = -1, out = -1, precision = 24.000000 bits, PASS
neg(2): ref = -2, out = -2, precision = 24.000000 bits, PASS
neg(4): ref = -4, out = -4, precision = 24.000000 bits, PASS
neg(60): ref = -60, out = -60, precision = 24.000000 bits, PASS
neg(inf): ref = -inf, out = -inf, precision = 24.000000 bits, PASS
LLVM ERROR: Cannot select: intrinsic %llvm.x86.sse41.round.ps


6bb00df864ea4e2f74f47c088b65baaff962cca5 is the first bad commit
commit 6bb00df864ea4e2f74f47c088b65baaff962cca5
Author: Jim Grosbach <grosbach at apple.com>
Date:   Sat Apr 12 01:34:29 2014 +0000

    X86: Remove TargetMachine CPU auto-detection.

    This logic is properly in the realm of whatever is creating the
    TargetMachine. This makes plain 'llc foo.ll' consistent across
    heterogenous machines.

    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206094
91177308-0d34-0410-b5e6-96231b3b80d8

:040000 040000 2cae884260c943f7fc7bb85b5a3231cbc4977fdc
f9e5bdc9dc900207f424347deb3c62a5b5ffe833 M    lib
bisect run success

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