search for: i122

hi, i''m indexing a really large db table (~4.2 million rows). i''ve noticed that after ~2M records, index performance decreases by almost an order of magnitude. full dataset graph here: http://i122.photobucket.com/albums/o244/spokeo/indexer-data.jpg here''s a couple best-fit lines that represent the data points: 0-2M : y = 78.65655x + 144237.5 2.5M+ : y = 10.79832x + 1980630 the part that strikes me as most odd is the bend between 2M and 2.5M. i haven''t read the ferret al...

...tmp29.i116.i, 0xBFFD23DD40000000 > %tmp31.i118.i = fmul float %tmp7.i94.i, %tmp30.i117.i > %tmp32.i119.i = fadd float %tmp31.i118.i, 0x3FFC80EF00000000 > %tmp33.i120.i = fmul float %tmp7.i94.i, %tmp32.i119.i > %tmp34.i121.i = fadd float %tmp33.i120.i, 0xBFD6D1F0E0000000 > %tmp35.i122.i = fmul float %tmp7.i94.i, %tmp34.i121.i > %tmp36.i123.i = fadd float %tmp35.i122.i, 0x3FD470BF40000000 > %tmp37.i124.i = fmul float %tmp19.i106.i, %tmp36.i123.i > %tmp38.i125.i = fsub float 1.000000e+00, %tmp37.i124.i > %cmp.i128.i = fcmp olt float %tmp11.i.i, 0.000000e+00 > b...

Hello everybody, I have stumbled upon a test case (the attached module is a slightly reduced version) that shows extremely reduced performance on linux compared to windows when executed using LLVM's JIT. We narrowed the problem down to the actual code being generated, the source IR on both systems is the same. Try compiling the attached module: llc -O3 -filetype=asm -o BAD.s BAD.ll Under

...67: ; preds = %CF254 %L119 = load i64, i64* %Sl store i32 %ZE, i32* %PC78 %E120 = extractelement <4 x i16> zeroinitializer, i32 1 %Shuff121 = shufflevector <1 x i32> %Shuff33, <1 x i32> %Shuff33, <1 x i32> zeroinitializer %I122 = insertelement <1 x i32> %Shuff121, i32 %E82, i32 0 %B123 = mul <4 x i16> %I40, %I34 %Sl124 = select i1 %FC, <4 x i1> %Cmp110, <4 x i1> %Cmp110 %Cmp125 = icmp ne <4 x i64> %ZE108, zeroinitializer %L126 = load i64, i64* %Sl store i32 %ZE, i32* %Sl117 %E127...

...i16 %11, i16* %incdec.ptr1.1.i, align 2, !tbaa !5 %incdec.ptr.3.i121 = getelementptr inbounds i16* %a, i32 4 %12 = load i16* %incdec.ptr.2.i120, align 2, !tbaa !5 %incdec.ptr1.3.i = getelementptr inbounds i16* %c, i32 4 store i16 %12, i16* %incdec.ptr1.2.i, align 2, !tbaa !5 %incdec.ptr.4.i122 = getelementptr inbounds i16* %a, i32 5 %13 = load i16* %incdec.ptr.3.i121, align 2, !tbaa !5 %incdec.ptr1.4.i = getelementptr inbounds i16* %c, i32 5 store i16 %13, i16* %incdec.ptr1.3.i, align 2, !tbaa !5 %incdec.ptr.5.i123 = getelementptr inbounds i16* %a, i32 6 %14 = load i16* %incdec...