Implementation notes: amd64, latour, crypto_sign/luov863256

Computer: latour
Architecture: amd64
CPU ID: GenuineIntel-000006fb-bfebfbff
SUPERCOP version: 20201130
Operation: crypto_sign
Primitive: luov863256
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
22938228557400 0 0116925 776 1624T:portablegcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2020090120200826
23462802551845 0 0112863 840 1592T:portableclang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
23468517551957 0 0113119 840 1592T:portableclang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
23541417551669 0 0112151 840 1592T:portableclang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
23561523551669 0 0112151 840 1592T:portableclang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
23695344551610 0 0111357 776 1624T:portablegcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2020090120200826
23872122546550 0 0107739 824 1592T:portableclang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
24440166549794 0 0110037 776 1624T:portablegcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2020090120200826
25295913547513 0 0107973 768 1592T:portablegcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2020090120200826
109283877417375 36 0238685 776 1624T:refgcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2020090120200826
110305719411192 36 0234055 840 1592T:refclang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
110386260411400 36 0234959 840 1592T:refclang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
110484207411192 36 0234055 840 1592T:refclang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
110838366412425 36 0234837 776 1624T:refgcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2020090120200826
111445128411336 36 0234767 840 1592T:refclang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
111458151408956 36 0232021 768 1592T:refgcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2020090120200826
112193658407557 36 0231251 824 1592T:refclang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE2020090120200826
113128200410899 36 0233909 776 1624T:refgcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE2020090120200826

Compiler output

Implementation: T:avx2
Security model: timingleaks
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE
LUOV.c: LUOV.c:38:44: error: always_inline function '_mm256_loadu_si256' requires target feature 'xsave', but would be inlined into function 'calculateQ2' that is compiled without support for 'xsave'
LUOV.c: __m256i rrrr = _mm256_permute4x64_epi64(_mm256_loadu_si256((__m256i *)&Q1[col++]),0);
LUOV.c: ^
LUOV.c: LUOV.c:38:19: error: always_inline function '_mm256_setzero_si256' requires target feature 'xsave', but would be inlined into function 'calculateQ2' that is compiled without support for 'xsave'
LUOV.c: __m256i rrrr = _mm256_permute4x64_epi64(_mm256_loadu_si256((__m256i *)&Q1[col++]),0);
LUOV.c: ^
LUOV.c: /usr/lib/llvm-3.8/bin/../lib/clang/3.8.0/include/avx2intrin.h:877:44: note: expanded from macro '_mm256_permute4x64_epi64'
LUOV.c: (__v4di)_mm256_setzero_si256(), \
LUOV.c: ^
LUOV.c: LUOV.c:43:52: error: always_inline function '_mm256_blendv_pd' requires target feature 'xsave', but would be inlined into function 'calculateQ2' that is compiled without support for 'xsave'
LUOV.c: *((__m256i *)&TempMat[i][k*8+4]) ^= (__m256i) _mm256_blendv_pd(_mm256_setzero_pd(),(__m256d) rrrr,(__m256d)TJ);
LUOV.c: ^
LUOV.c: LUOV.c:43:69: error: always_inline function '_mm256_setzero_pd' requires target feature 'xsave', but would be inlined into function 'calculateQ2' that is compiled without support for 'xsave'
LUOV.c: *((__m256i *)&TempMat[i][k*8+4]) ^= (__m256i) _mm256_blendv_pd(_mm256_setzero_pd(),(__m256d) rrrr,(__m256d)TJ);
LUOV.c: ^
LUOV.c: LUOV.c:44:10: error: always_inline function '_mm256_slli_epi64' requires target feature 'xsave', but would be inlined into function 'calculateQ2' that is compiled without support for 'xsave'
LUOV.c: TJ = _mm256_slli_epi64(TJ,4);
LUOV.c: ^
LUOV.c: LUOV.c:46:49: error: always_inline function '_mm256_blendv_pd' requires target feature 'xsave', but would be inlined into function 'calculateQ2' that is compiled without support for 'xsave'
LUOV.c: *((__m256i *)&TempMat[i][k*8]) ^= (__m256i) _mm256_blendv_pd(_mm256_setzero_pd(),(__m256d) rrrr,(__m256d)TJ);
LUOV.c: ^
LUOV.c: LUOV.c:46:66: error: always_inline function '_mm256_setzero_pd' requires target feature 'xsave', but would be inlined into function 'calculateQ2' that is compiled without support for 'xsave'
LUOV.c: *((__m256i *)&TempMat[i][k*8]) ^= (__m256i) _mm256_blendv_pd(_mm256_setzero_pd(),(__m256d) rrrr,(__m256d)TJ);
LUOV.c: ^
LUOV.c: LUOV.c:47:10: error: always_inline function '_mm256_slli_epi64' requires target feature 'xsave', but would be inlined into function 'calculateQ2' that is compiled without support for 'xsave'
LUOV.c: ...

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:avx2
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:avx2
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:avx2
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:avx2

Compiler output

Implementation: T:avx2
Security model: timingleaks
Compiler: clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE
LUOV.c: LUOV.c:38:44: error: always_inline function '_mm256_loadu_si256' requires target feature 'sse4.2', but would be inlined into function 'calculateQ2' that is compiled without support for 'sse4.2'
LUOV.c: __m256i rrrr = _mm256_permute4x64_epi64(_mm256_loadu_si256((__m256i *)&Q1[col++]),0);
LUOV.c: ^
LUOV.c: LUOV.c:38:19: error: always_inline function '_mm256_setzero_si256' requires target feature 'sse4.2', but would be inlined into function 'calculateQ2' that is compiled without support for 'sse4.2'
LUOV.c: __m256i rrrr = _mm256_permute4x64_epi64(_mm256_loadu_si256((__m256i *)&Q1[col++]),0);
LUOV.c: ^
LUOV.c: /usr/lib/llvm-3.8/bin/../lib/clang/3.8.0/include/avx2intrin.h:877:44: note: expanded from macro '_mm256_permute4x64_epi64'
LUOV.c: (__v4di)_mm256_setzero_si256(), \
LUOV.c: ^
LUOV.c: LUOV.c:43:52: error: always_inline function '_mm256_blendv_pd' requires target feature 'sse4.2', but would be inlined into function 'calculateQ2' that is compiled without support for 'sse4.2'
LUOV.c: *((__m256i *)&TempMat[i][k*8+4]) ^= (__m256i) _mm256_blendv_pd(_mm256_setzero_pd(),(__m256d) rrrr,(__m256d)TJ);
LUOV.c: ^
LUOV.c: LUOV.c:43:69: error: always_inline function '_mm256_setzero_pd' requires target feature 'sse4.2', but would be inlined into function 'calculateQ2' that is compiled without support for 'sse4.2'
LUOV.c: *((__m256i *)&TempMat[i][k*8+4]) ^= (__m256i) _mm256_blendv_pd(_mm256_setzero_pd(),(__m256d) rrrr,(__m256d)TJ);
LUOV.c: ^
LUOV.c: LUOV.c:44:10: error: always_inline function '_mm256_slli_epi64' requires target feature 'sse4.2', but would be inlined into function 'calculateQ2' that is compiled without support for 'sse4.2'
LUOV.c: TJ = _mm256_slli_epi64(TJ,4);
LUOV.c: ^
LUOV.c: LUOV.c:46:49: error: always_inline function '_mm256_blendv_pd' requires target feature 'sse4.2', but would be inlined into function 'calculateQ2' that is compiled without support for 'sse4.2'
LUOV.c: *((__m256i *)&TempMat[i][k*8]) ^= (__m256i) _mm256_blendv_pd(_mm256_setzero_pd(),(__m256d) rrrr,(__m256d)TJ);
LUOV.c: ^
LUOV.c: LUOV.c:46:66: error: always_inline function '_mm256_setzero_pd' requires target feature 'sse4.2', but would be inlined into function 'calculateQ2' that is compiled without support for 'sse4.2'
LUOV.c: *((__m256i *)&TempMat[i][k*8]) ^= (__m256i) _mm256_blendv_pd(_mm256_setzero_pd(),(__m256d) rrrr,(__m256d)TJ);
LUOV.c: ^
LUOV.c: LUOV.c:47:10: error: always_inline function '_mm256_slli_epi64' requires target feature 'sse4.2', but would be inlined into function 'calculateQ2' that is compiled without support for 'sse4.2'
LUOV.c: ...

Number of similar (compiler,implementation) pairs: 1, namely:
CompilerImplementations
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:avx2

Compiler output

Implementation: T:avx2
Security model: timingleaks
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE
LUOV.c: LUOV.c: In function 'calculateQ2':
LUOV.c: LUOV.c:38:12: warning: AVX vector return without AVX enabled changes the ABI [-Wpsabi]
LUOV.c: __m256i rrrr = _mm256_permute4x64_epi64(_mm256_loadu_si256((__m256i *)&Q1[col++]),0);
LUOV.c: ^
LUOV.c: In file included from LinearAlgebra.h:9:0,
LUOV.c: from LUOV.h:13,
LUOV.c: from LUOV.c:1:
LUOV.c: AVX_Operations.h: In function 'scalarMul_ct':
LUOV.c: AVX_Operations.h:529:6: note: The ABI for passing parameters with 32-byte alignment has changed in GCC 4.6
LUOV.c: void scalarMul_ct(__m256i *Out, __m256i A, FELT b){
LUOV.c: ^
LUOV.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/immintrin.h:43:0,
LUOV.c: from LUOV.h:7,
LUOV.c: from LUOV.c:1:
LUOV.c: AVX_Operations.h: In function 'addScalarProductAVX':
LUOV.c: /usr/lib/gcc/x86_64-linux-gnu/5/include/avx2intrin.h:186:1: error: inlining failed in call to always_inline '_mm256_andnot_si256': target specific option mismatch
LUOV.c: _mm256_andnot_si256 (__m256i __A, __m256i __B)
LUOV.c: ^
LUOV.c: In file included from LinearAlgebra.h:9:0,
LUOV.c: from LUOV.h:13,
LUOV.c: from LUOV.c:1:
LUOV.c: AVX_Operations.h:73:7: error: called from here
LUOV.c: avx2 = _mm256_andnot_si256(avx2,aa);
LUOV.c: ^
LUOV.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/5/include/immintrin.h:43:0,
LUOV.c: ...

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE T:avx2
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE T:avx2
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE T:avx2
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE T:avx2

Namespace violations

Implementation: T:portable
Security model: timingleaks
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE
Bitcontainer.o squeezeBitcontainerArray T
F16Field.o f16EucildeanDivision T
F16Field.o f16ExtendedEuclideanAlgorithm T
F16Field.o f16antilog T
F16Field.o f16deserialize_FELT T
F16Field.o f16inverse T
F16Field.o f16log T
F16Field.o f16multiply T
F16Field.o f16polyAdd T
F16Field.o f16polyCopy T
F16Field.o f16polyMult T
F16Field.o f16polyOne T
F16Field.o f16polyZero T
F16Field.o f16printFELT T
F16Field.o f16scalarMultiply T
F16Field.o f16serialize_FELT T
F16Field.o isArrayOfZeros T
F32Field.o f32add T
F32Field.o f32addInPlace T
F32Field.o f32deserialize_FELT T
F32Field.o f32inverse T
F32Field.o f32isEqual T
F32Field.o f32multiply T
F32Field.o f32multiplyOld T
F32Field.o f32printFELT T
F32Field.o f32scalarMultiply T
F32Field.o f32serialize_FELT T
F32Field.o newF32FELT T
F48Field.o f48add T
F48Field.o f48addInPlace T
F48Field.o f48deserialize_FELT T
F48Field.o f48inverse T
F48Field.o f48isEqual T
F48Field.o f48multiply T
F48Field.o f48printFELT T
F48Field.o f48scalarMultiply T
F48Field.o f48serialize_FELT T
F48Field.o newF48FELT T
F64Field.o f64add T
F64Field.o f64addInPlace T
F64Field.o f64deserialize_FELT T
F64Field.o f64inverse T
F64Field.o f64isEqual T
F64Field.o f64multiply T
F64Field.o f64printFELT T
F64Field.o f64scalarMultiply T
F64Field.o f64serialize_FELT T
F64Field.o newF64FELT T
F80Field.o f80Scalarmultiply T
F80Field.o f80add T
F80Field.o f80addInPlace T
F80Field.o f80deserialize_FELT T
F80Field.o f80inverse T
F80Field.o f80isEqual T
F80Field.o f80multiply T
F80Field.o f80printFELT T
F80Field.o f80serialize_FELT T
F80Field.o newF80FELT T
F8Field.o f8antilog T
F8Field.o f8deserialize_FELT T
F8Field.o f8inverse T
F8Field.o f8log T
F8Field.o f8multiply T
F8Field.o f8printFELT T
F8Field.o f8serialize_FELT T
LUOV.o BuildAugmentedMatrix T
LUOV.o _addScalarProduct1 T
LUOV.o _addScalarProduct3 T
LUOV.o addScalarProduct T
LUOV.o addScalarProduct3 T
LUOV.o calculateQ2 T
LUOV.o computeTarget T
LUOV.o deserialize_PublicKey T
LUOV.o deserialize_SecretKey T
LUOV.o deserialize_signature T
LUOV.o destroy_PublicKey T
LUOV.o destroy_SecretKey T
LUOV.o destroy_signature T
LUOV.o evaluatePublicMap T
LUOV.o expandTable T
LUOV.o extractMessage T
LUOV.o generateKeyPair T
LUOV.o repeatTable T
LUOV.o serialize_PublicKey T
LUOV.o serialize_SecretKey T
LUOV.o serialize_signature T
LUOV.o signDocument T
LUOV.o solvePrivateUOVSystem T
LUOV.o verify T
LinearAlgebra.o destroy_matrix T
LinearAlgebra.o getUniqueSolution T
LinearAlgebra.o newMatrix T
LinearAlgebra.o printMatrix T
LinearAlgebra.o rowEchelonAugmented T
LinearAlgebra.o rowOp T
LinearAlgebra.o scaleRow T
LinearAlgebra.o swapRows T
LinearAlgebra.o zeroMatrix T
buffer.o deserialize_uint64_t T
buffer.o newReader T
buffer.o newWriter T
buffer.o readBit T
buffer.o serialize_uint64_t T
buffer.o transcribe T
buffer.o writeBit T
intermediateValues.o printAugmentedMatrix T
intermediateValues.o printEvaluation T
intermediateValues.o printPrivateSolution T
intermediateValues.o printVinegarValues T
intermediateValues.o reportSolutionFound T
keccakrng.o initializeAndAbsorb T
keccakrng.o squeezeVector T
keccakrng.o squeezeuint64_t T

Number of similar (compiler,implementation) pairs: 9, namely:
CompilerImplementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:portable
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:portable
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:portable
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:portable
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:portable
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE T:portable
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE T:portable
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE T:portable
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE T:portable

Namespace violations

Implementation: T:ref
Security model: timingleaks
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE
Bitcontainer.o squeezeBitcontainerArray T
F16Field.o f16EucildeanDivision T
F16Field.o f16ExtendedEuclideanAlgorithm T
F16Field.o f16antilog T
F16Field.o f16deserialize_FELT T
F16Field.o f16inverse T
F16Field.o f16log T
F16Field.o f16multiply T
F16Field.o f16polyAdd T
F16Field.o f16polyCopy T
F16Field.o f16polyMult T
F16Field.o f16polyOne T
F16Field.o f16polyZero T
F16Field.o f16printFELT T
F16Field.o f16scalarMultiply T
F16Field.o f16serialize_FELT T
F16Field.o isArrayOfZeros T
F32Field.o f32add T
F32Field.o f32deserialize_FELT T
F32Field.o f32inverse T
F32Field.o f32isEqual T
F32Field.o f32multiply T
F32Field.o f32multiplyOld T
F32Field.o f32printFELT T
F32Field.o f32scalarMultiply T
F32Field.o f32serialize_FELT T
F32Field.o newF32FELT T
F48Field.o f48add T
F48Field.o f48deserialize_FELT T
F48Field.o f48inverse T
F48Field.o f48isEqual T
F48Field.o f48multiply T
F48Field.o f48printFELT T
F48Field.o f48scalarMultiply T
F48Field.o f48serialize_FELT T
F48Field.o newF48FELT T
F64Field.o f64add T
F64Field.o f64deserialize_FELT T
F64Field.o f64inverse T
F64Field.o f64isEqual T
F64Field.o f64multiply T
F64Field.o f64printFELT T
F64Field.o f64scalarMultiply T
F64Field.o f64serialize_FELT T
F64Field.o newF64FELT T
F80Field.o f80Scalarmultiply T
F80Field.o f80add T
F80Field.o f80deserialize_FELT T
F80Field.o f80inverse T
F80Field.o f80isEqual T
F80Field.o f80multiply T
F80Field.o f80printFELT T
F80Field.o f80serialize_FELT T
F80Field.o newF80FELT T
F8Field.o f8antilog T
F8Field.o f8deserialize_FELT T
F8Field.o f8inverse T
F8Field.o f8log T
F8Field.o f8multiply T
F8Field.o f8printFELT T
F8Field.o f8serialize_FELT T
LUOV.o BuildAugmentedMatrix T
LUOV.o calculateQ2 T
LUOV.o computeTarget T
LUOV.o deserialize_PublicKey T
LUOV.o deserialize_SecretKey T
LUOV.o deserialize_signature T
LUOV.o destroy_PublicKey T
LUOV.o destroy_SecretKey T
LUOV.o destroy_signature T
LUOV.o evaluatePublicMap T
LUOV.o extractMessage T
LUOV.o generateKeyPair T
LUOV.o serialize_PublicKey T
LUOV.o serialize_SecretKey T
LUOV.o serialize_signature T
LUOV.o signDocument T
LUOV.o solvePrivateUOVSystem T
LUOV.o verify T
LinearAlgebra.o destroy_matrix T
LinearAlgebra.o getUniqueSolution T
LinearAlgebra.o newMatrix T
LinearAlgebra.o printMatrix T
LinearAlgebra.o rowEchelonAugmented T
LinearAlgebra.o rowOp T
LinearAlgebra.o scaleRow T
LinearAlgebra.o swapRows T
LinearAlgebra.o zeroMatrix T
buffer.o deserialize_uint64_t T
buffer.o newReader T
buffer.o newWriter T
buffer.o readBit T
buffer.o serialize_uint64_t T
buffer.o transcribe T
buffer.o writeBit T
intermediateValues.o printAugmentedMatrix T
intermediateValues.o printEvaluation T
intermediateValues.o printPrivateSolution T
intermediateValues.o printVinegarValues T
intermediateValues.o reportSolutionFound T
keccakrng.o initializeAndAbsorb T
keccakrng.o squeezeVector T
keccakrng.o squeezeuint64_t T

Number of similar (compiler,implementation) pairs: 9, namely:
CompilerImplementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:ref
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:ref
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:ref
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:ref
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:ref
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE T:ref
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE T:ref
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE T:ref
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE T:ref