Implementation notes: aarch64, gcc185, crypto_stream/chacha20

Computer: gcc185
Microarchitecture: aarch64; Skylark (503f0002)
Architecture: aarch64
CPU ID: 503f0002
SUPERCOP version: 20230530
Operation: crypto_stream
Primitive: chacha20

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
12600	3372 0 4	17814 832 824	`e/merged`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
12675	2412 0 4	15629 824 808	`e/merged`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
13200	2044 0 4	14285 808 800	`e/merged`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
13275	3044 0 4	17486 832 824	`e/ref`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
13275	3044 0 4	17486 832 824	`e/regs`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
13725	2832 0 1	16978 816 808	`e/merged`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
13800	2836 0 1	18274 816 816	`e/merged`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
13800	2504 0 1	15386 816 808	`e/merged`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
13800	2836 0 1	18274 816 816	`e/merged`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14100	2672 0 1	18114 816 816	`e/regs`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14100	2672 0 1	18114 816 816	`e/regs`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14250	3664 0 1	17826 816 808	`dolbeau/arm-neon`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14250	4080 0 1	19530 816 816	`dolbeau/arm-neon`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14250	3148 0 1	16042 816 808	`dolbeau/arm-neon`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14250	4080 0 1	19530 816 816	`dolbeau/arm-neon`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14325	3276 0 1	15944 808 800	`dolbeau/arm-neon`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14550	3964 0 4	17189 824 808	`dolbeau/arm-neon`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
14550	4732 0 4	19166 832 824	`dolbeau/arm-neon`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
14700	2680 0 1	18114 816 816	`e/ref`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14700	2680 0 1	18114 816 816	`e/ref`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
14700	2652 0 1	16802 816 808	`e/regs`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
15450	3328 0 4	15565 808 800	`dolbeau/arm-neon`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
15450	2264 0 1	16410 816 808	`e/ref`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
16200	2520 0 1	15160 808 800	`e/merged`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
16650	2188 0 4	15413 824 808	`e/regs`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
17700	2320 0 1	15210 816 808	`e/regs`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
17775	4300 0 4	17477 824 808	`dolbeau/arm-neon`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
18750	3324 0 1	16218 816 808	`dolbeau/generic-gccsimd128`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18750	5268 0 1	19434 816 808	`dolbeau/generic-gccsimd256`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18750	5628 0 1	21074 816 816	`dolbeau/generic-gccsimd256`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18750	4712 0 1	17618 816 808	`dolbeau/generic-gccsimd256`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18750	4880 0 1	17536 808 800	`dolbeau/generic-gccsimd256`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18750	5628 0 1	21074 816 816	`dolbeau/generic-gccsimd256`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18825	3860 0 1	18018 816 808	`dolbeau/generic-gccsimd128`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18825	4276 0 1	19722 816 816	`dolbeau/generic-gccsimd128`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18825	3472 0 1	16136 808 800	`dolbeau/generic-gccsimd128`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18825	4276 0 1	19722 816 816	`dolbeau/generic-gccsimd128`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
18975	4108 0 4	17349 824 808	`dolbeau/generic-gccsimd128`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
18975	4844 0 4	19294 832 824	`dolbeau/generic-gccsimd128`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
18975	1780 0 1	14674 816 808	`e/ref`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
19125	1816 0 4	14053 808 800	`e/ref`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
19125	2348 0 1	15000 808 800	`e/regs`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
19275	7535 976 0	1197004 145681 15144	`T:cryptopp`	`clang++_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
19275	14480 2240 0	1200595 146929 15144	`T:cryptopp`	`g++_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
19275	2204 0 4	15421 824 808	`e/ref`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
19350	7535 976 0	1195724 145681 15128	`T:cryptopp`	`clang++_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
19350	14613 3232 0	1200472 147881 15128	`T:cryptopp`	`clang++_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
19350	5427 976 0	1192000 145665 15128	`T:cryptopp`	`clang++_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
19350	14520 2240 0	1199665 146929 15144	`T:cryptopp`	`g++_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
19350	13509 2240 0	1198108 146937 15144	`T:cryptopp`	`g++_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
19350	6164 2880 0	1190380 147577 15128	`T:cryptopp`	`g++_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
19650	3720 0 4	16885 824 808	`e/merged`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
21075	3432 0 4	15677 808 800	`dolbeau/generic-gccsimd128`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
21900	1916 0 1	14552 808 800	`e/ref`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20230531	20230530
22125	4368 0 4	17557 824 808	`dolbeau/generic-gccsimd128`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
22275	8772 0 4	23230 832 824	`dolbeau/generic-gccsimd256`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
22350	8044 0 4	21293 824 808	`dolbeau/generic-gccsimd256`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
22425	7812 0 4	21005 824 808	`dolbeau/generic-gccsimd256`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
22500	6824 0 4	19061 808 800	`dolbeau/generic-gccsimd256`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
23775	1976 0 4	14197 808 800	`e/regs`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
23850	2608 0 4	15781 824 808	`e/ref`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530
31875	3068 0 4	16229 824 808	`e/regs`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20230531	20230530

Compiler output

Implementation: dolbeau/arm-sve
Security model: constbranchindex
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

chacha.c: In file included from chacha.c:11:
chacha.c: /usr/lib64/clang/15.0.7/include/arm_sve.h:15:2: error: "SVE support not enabled"
chacha.c: #error "SVE support not enabled"
chacha.c: ^
chacha.c: In file included from chacha.c:94:
chacha.c: ./uX.h:21:9: error: expected ';' after expression
chacha.c: uint64_t vc = svcntb(); /* how many bytes in a vector */
chacha.c: ^
chacha.c: ;
chacha.c: ./uX.h:21:1: error: use of undeclared identifier 'uint64_t'
chacha.c: uint64_t vc = svcntb(); /* how many bytes in a vector */
chacha.c: ^
chacha.c: ./uX.h:21:10: error: use of undeclared identifier 'vc'
chacha.c: uint64_t vc = svcntb(); /* how many bytes in a vector */
chacha.c: ^
chacha.c: ./uX.h:21:15: warning: call to undeclared function 'svcntb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
chacha.c: uint64_t vc = svcntb(); /* how many bytes in a vector */
chacha.c: ^
chacha.c: ./uX.h:22:15: error: use of undeclared identifier 'vc'
chacha.c: if (bytes>=16*vc) {
chacha.c: ^
chacha.c: ./uX.h:24:3: error: unknown type name 'svuint32_t'; did you mean '__uint32_t'?
chacha.c: svuint32_t x_0 = svdup_n_u32(x[0]);
chacha.c: ^~~~~~~~~~
chacha.c: __uint32_t
chacha.c: ...

Number of similar (compiler,implementation) pairs: 5, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve

Compiler output

Implementation: dolbeau/arm-sve
Security model: constbranchindex
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE

chacha.c: chacha.c:11:10: fatal error: arm_sve.h: No such file or directory
chacha.c: #include <arm_sve.h>
chacha.c: ^~~~~~~~~~~
chacha.c: compilation terminated.

Number of similar (compiler,implementation) pairs: 8, namely:

Compiler	Implementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	dolbeau/arm-sve
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	dolbeau/arm-sve
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	dolbeau/arm-sve
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	dolbeau/arm-sve
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	dolbeau/arm-sve2
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	dolbeau/arm-sve2
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	dolbeau/arm-sve2
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	dolbeau/arm-sve2

Compiler output

Implementation: dolbeau/arm-sve2
Security model: constbranchindex
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

chacha.c: In file included from chacha.c:11:
chacha.c: /usr/lib64/clang/15.0.7/include/arm_sve.h:15:2: error: "SVE support not enabled"
chacha.c: #error "SVE support not enabled"
chacha.c: ^
chacha.c: In file included from chacha.c:94:
chacha.c: ./uX.h:18:9: error: expected ';' after expression
chacha.c: uint64_t vc = svcntb(); /* how many bytes in a vector */
chacha.c: ^
chacha.c: ;
chacha.c: ./uX.h:18:1: error: use of undeclared identifier 'uint64_t'
chacha.c: uint64_t vc = svcntb(); /* how many bytes in a vector */
chacha.c: ^
chacha.c: ./uX.h:18:10: error: use of undeclared identifier 'vc'
chacha.c: uint64_t vc = svcntb(); /* how many bytes in a vector */
chacha.c: ^
chacha.c: ./uX.h:18:15: warning: call to undeclared function 'svcntb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
chacha.c: uint64_t vc = svcntb(); /* how many bytes in a vector */
chacha.c: ^
chacha.c: ./uX.h:19:15: error: use of undeclared identifier 'vc'
chacha.c: if (bytes>=16*vc) {
chacha.c: ^
chacha.c: ./uX.h:21:3: error: unknown type name 'svuint32_t'; did you mean '__uint32_t'?
chacha.c: svuint32_t x_0 = svdup_n_u32(x[0]);
chacha.c: ^~~~~~~~~~
chacha.c: __uint32_t
chacha.c: ...

Number of similar (compiler,implementation) pairs: 5, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve2
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve2
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve2
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve2
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	dolbeau/arm-sve2

Compiler output

Implementation: krovetz/vec128
Security model: constbranchindex
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

stream.c: stream.c:80:2: error: -- Implementation supports only machines with neon, altivec or SSE2
stream.c: #error -- Implementation supports only machines with neon, altivec or SSE2
stream.c: ^
stream.c: stream.c:151:14: warning: call to undeclared function 'NONCE'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
stream.c: vec s3 = NONCE(np);
stream.c: ^
stream.c: stream.c:151:9: error: initializing 'vec' (vector of 4 'unsigned int' values) with an expression of incompatible type 'int'
stream.c: vec s3 = NONCE(np);
stream.c: ^ ~~~~~~~~~
stream.c: stream.c:152:36: error: use of undeclared identifier 'VBPI'
stream.c: for (iters = 0; iters < inlen/(BPI*64); iters++) {
stream.c: ^
stream.c: stream.c:91:19: note: expanded from macro 'BPI'
stream.c: #define BPI (VBPI + GPR_TOO) /* Blocks computed per loop iteration */
stream.c: ^
stream.c: stream.c:152:36: error: use of undeclared identifier 'GPR_TOO'
stream.c: stream.c:91:26: note: expanded from macro 'BPI'
stream.c: #define BPI (VBPI + GPR_TOO) /* Blocks computed per loop iteration */
stream.c: ^
stream.c: stream.c:155:19: error: use of undeclared identifier 'ONE'
stream.c: v7 = v3 + ONE;
stream.c: ^
stream.c: stream.c:176:13: warning: call to undeclared function 'ROTW16'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
stream.c: DQROUND_VECTORS(v0,v1,v2,v3)
stream.c: ^
stream.c: ...

Number of similar (compiler,implementation) pairs: 5, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	krovetz/vec128
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	krovetz/vec128
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	krovetz/vec128
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	krovetz/vec128
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	krovetz/vec128

Compiler output

Implementation: krovetz/vec128
Security model: constbranchindex
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE

stream.c: stream.c:80:2: error: #error -- Implementation supports only machines with neon, altivec or SSE2
stream.c: #error -- Implementation supports only machines with neon, altivec or SSE2
stream.c: ^~~~~
stream.c: stream.c: In function 'crypto_stream_chacha20_krovetz_vec128_constbranchindex_xor':
stream.c: stream.c:151:14: warning: implicit declaration of function 'NONCE' [-Wimplicit-function-declaration]
stream.c: vec s3 = NONCE(np);
stream.c: ^~~~~
stream.c: stream.c:151:14: error: incompatible types when initializing type 'vec' {aka '__vector(4) unsigned int'} using type 'int'
stream.c: stream.c:91:19: error: 'VBPI' undeclared (first use in this function); did you mean 'BPI'?
stream.c: #define BPI (VBPI + GPR_TOO) /* Blocks computed per loop iteration */
stream.c: ^~~~
stream.c: stream.c:152:36: note: in expansion of macro 'BPI'
stream.c: for (iters = 0; iters < inlen/(BPI*64); iters++) {
stream.c: ^~~
stream.c: stream.c:91:19: note: each undeclared identifier is reported only once for each function it appears in
stream.c: #define BPI (VBPI + GPR_TOO) /* Blocks computed per loop iteration */
stream.c: ^~~~
stream.c: stream.c:152:36: note: in expansion of macro 'BPI'
stream.c: for (iters = 0; iters < inlen/(BPI*64); iters++) {
stream.c: ^~~
stream.c: stream.c:91:26: error: 'GPR_TOO' undeclared (first use in this function)
stream.c: #define BPI (VBPI + GPR_TOO) /* Blocks computed per loop iteration */
stream.c: ^~~~~~~
stream.c: stream.c:152:36: note: in expansion of macro 'BPI'
stream.c: for (iters = 0; iters < inlen/(BPI*64); iters++) {
stream.c: ...

Number of similar (compiler,implementation) pairs: 4, namely:

Compiler	Implementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	krovetz/vec128
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	krovetz/vec128
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	krovetz/vec128
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	krovetz/vec128