[Bug ipa/65006] New: [5 Regression] 252.eon in SPEC CPU 2000 miscompiled

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65006

            Bug ID: 65006
           Summary: [5 Regression] 252.eon in SPEC CPU 2000 miscompiled
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: hubicka at ucw dot cz

On x86-32, r220521 miscompiled 252.eon in SPEC CPU 2000:

g++ -m32 -ffast-math -mpc64    -O2 -msse2 -mfpmath=sse -ffast-math
-fwhole-program -flto=jobserver -fuse-linker-plugin  ggCoverageSolidTexture.o
ggPathDielectricMaterial.o ggBox2.o ggBox3.o ggRasterSurfaceTexture.o
ggJitterSample1.o ggNRooksSample2.o ggJitterSample2.o ggRGBFPixel.o
ggRotatingPinholeCamera.o ggRandomSample2.o ggRandomSample3.o ggSolidNoise2.o
ggSolidNoise3.o ggSolidTexture.o ggOakSolidTexture.o ggSpecularMaterial.o
ggNA.o ggMaterial.o ggDiffuseMaterial.o ggDielectricMaterial.o
ggConductorMaterial.o ggEdgeDiscrepancy.o ggPolishedMaterial.o
ggFrameInterpolation.o ggQuaternion.o ggSpline.o ggONB2.o ggONB3.o ggFrame2.o
ggFrame3.o ggHMatrix3.o ggSphere.o ggRGBE.o ggGamma.o ggBRDF.o ggDiffuseBRDF.o
ggPhongBRDF.o ggPolishedBRDF.o ggCamera.o ggPinholeCamera.o ggThinLensCamera.o
ggErr.o ggPixelFilter.o ggTrianglePixelFilter.o ggBoxPixelFilter.o ggFormat.o
ggGeometry.o ggHAffineMatrix3.o ggHShearMatrix3.o ggHBoxMatrix3.o
ggHPerspectiveMatrix3.o ggHTranslationMatrix3.o ggHRigidBodyMatrix3.o
ggHRotationMatrix3.o ggHScaleMatrix3.o ggHPoint3.o ggPoint2.o ggPoint3.o
ggOptics.o ggPlane.o ggPolygon.o ggGrayPixel_x.o ggRGBPixel_x.o ggRay2.o
ggRay3.o ggBoardFloorSolidTexture.o ggVector2.o ggVector3.o ggString.o
ggFineSpectrum.o ggSpectrum.o eon.o eonImageCalculator.o mrObjectRecord.o
mrCoarsePixelRenderer.o mrIndirectPixelRenderer.o mrRushmeierPixelRenderer.o
mrBruteForcePixelRenderer.o mrKajiyaPixelRenderer.o mrCookPixelRenderer.o
mrGrid.o mrScene.o mrCamera.o mrTriangle.o mrFastTriangle.o mrPolygon.o
mrXYDisk.o mrXZDisk.o mrYZDisk.o mrPhongAreaXYRectangleLuminaire.o
mrPhongAreaXZRectangleLuminaire.o mrPhongAreaYZRectangleLuminaire.o mrEmitter.o
mrImposter.o mrLinkedObjects.o mrBox.o mrXCylinder.o mrYCylinder.o
mrZCylinder.o mrDiffuseAreaZCylinderLuminaire.o
mrDiffuseCosineZCylinderLuminaire.o mrDiffuseVisibleAreaZCylinderLuminaire.o
mrXEllipticalCylinder.o mrYEllipticalCylinder.o mrZEllipticalCylinder.o
mrSpotAreaXYDiskLuminaire.o mrDiffuseAreaXYRectangleLuminaire.o
mrDiffuseAreaXZRectangleLuminaire.o mrDiffuseAreaYZRectangleLuminaire.o
mrSurfaceList.o mrDiffuseAreaTriangleLuminaire.o mrDiffuseAreaSphereLuminaire.o
mrDiffuseCosineSphereLuminaire.o mrDiffuseSolidAngleSphereLuminaire.o
mrShellLuminaire.o mrInstance.o mrMaterial.o mrPhongAreaTriangleLuminaire.o
mrSolidTexture.o mrSphere.o mrSurface.o mrSurfaceTexture.o mrXYRectangle.o
mrXZRectangle.o mrYZRectangle.o myrand.o     -o eon
...
  Running 252.eon ref base lto default
*** Miscompare of pixels_out.kajiya, see
/export/gnu/import/git/gcc-regression/spec/2000/spec/benchspec/CINT2000/252.eon/run/00000002/pixels_out.kajiya.mis
*** Miscompare of pixels_out.cook, see
/export/gnu/import/git/gcc-regression/spec/2000/spec/benchspec/CINT2000/252.eon/run/00000002/pixels_out.cook.mis
*** Miscompare of pixels_out.rushmeier, see
/export/gnu/import/git/gcc-regression/spec/2000/spec/benchspec/CINT2000/252.eon/run/00000002/pixels_out.rushmeier.mis