Segher, Will: Patch 1, adds the sign extension instruction support and corresponding builtins.
Carl Love --------------------------------------------------------------------- RS6000 Add 128-bit sign extension support gcc/ChangeLog 2020-08-10 Carl Love <c...@us.ibm.com> * config/rs6000/altivec.h (vec_signextll, vec_signexti): Add define for new builtins. * config/rs6000/rs6000-builtin.def (VSIGNEXTI, VSIGNEXTLL): Add overloaded builtin definitions. (VSIGNEXTSB2W, VSIGNEXTSB2D, VSIGNEXTSH2D,VSIGNEXTSW2D): Add builtin expansions. * config/rs6000-call.c (P9V_BUILTIN_VEC_VSIGNEXTI, P9V_BUILTIN_VEC_VSIGNEXTLL): Add overloaded argument definitions. * config/rs6000/vsx.md: Make define_insn vsx_sign_extend_si_v2di visible. * doc/extend.texi: Add documentation for the vec_signexti and vec_signextll builtins. gcc/testsuite/ChangeLog 2020-08-10 Carl Love <c...@us.ibm.com> * gcc.target/powerpc/p9-sign_extend-runnable.c: New test case. --- gcc/config/rs6000/altivec.h | 3 + gcc/config/rs6000/rs6000-builtin.def | 9 ++ gcc/config/rs6000/rs6000-call.c | 13 ++ gcc/config/rs6000/vsx.md | 2 +- gcc/doc/extend.texi | 15 ++ .../powerpc/p9-sign_extend-runnable.c | 128 ++++++++++++++++++ 6 files changed, 169 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.target/powerpc/p9-sign_extend-runnable.c diff --git a/gcc/config/rs6000/altivec.h b/gcc/config/rs6000/altivec.h index bf2240f16a2..09320df14ca 100644 --- a/gcc/config/rs6000/altivec.h +++ b/gcc/config/rs6000/altivec.h @@ -498,6 +498,9 @@ #define vec_xlx __builtin_vec_vextulx #define vec_xrx __builtin_vec_vexturx +#define vec_signexti __builtin_vec_vsignexti +#define vec_signextll __builtin_vec_vsignextll + #endif /* Predicates. diff --git a/gcc/config/rs6000/rs6000-builtin.def b/gcc/config/rs6000/rs6000-builtin.def index f9f0fece549..667c2450d41 100644 --- a/gcc/config/rs6000/rs6000-builtin.def +++ b/gcc/config/rs6000/rs6000-builtin.def @@ -2691,6 +2691,8 @@ BU_P9V_OVERLOAD_1 (VPRTYBD, "vprtybd") BU_P9V_OVERLOAD_1 (VPRTYBQ, "vprtybq") BU_P9V_OVERLOAD_1 (VPRTYBW, "vprtybw") BU_P9V_OVERLOAD_1 (VPARITY_LSBB, "vparity_lsbb") +BU_P9V_OVERLOAD_1 (VSIGNEXTI, "vsignexti") +BU_P9V_OVERLOAD_1 (VSIGNEXTLL, "vsignextll") /* 2 argument functions added in ISA 3.0 (power9). */ BU_P9_2 (CMPRB, "byte_in_range", CONST, cmprb) @@ -2702,6 +2704,13 @@ BU_P9_OVERLOAD_2 (CMPRB, "byte_in_range") BU_P9_OVERLOAD_2 (CMPRB2, "byte_in_either_range") BU_P9_OVERLOAD_2 (CMPEQB, "byte_in_set") +/* Sign extend builtins that work on ISA 3.0, but not defined until ISA 3.1. */ +BU_P9V_AV_1 (VSIGNEXTSB2W, "vsignextsb2w", CONST, vsx_sign_extend_qi_v4si) +BU_P9V_AV_1 (VSIGNEXTSH2W, "vsignextsh2w", CONST, vsx_sign_extend_hi_v4si) +BU_P9V_AV_1 (VSIGNEXTSB2D, "vsignextsb2d", CONST, vsx_sign_extend_qi_v2di) +BU_P9V_AV_1 (VSIGNEXTSH2D, "vsignextsh2d", CONST, vsx_sign_extend_hi_v2di) +BU_P9V_AV_1 (VSIGNEXTSW2D, "vsignextsw2d", CONST, vsx_sign_extend_si_v2di) + /* Builtins for scalar instructions added in ISA 3.1 (power10). */ BU_P10_MISC_2 (CFUGED, "cfuged", CONST, cfuged) BU_P10_MISC_2 (CNTLZDM, "cntlzdm", CONST, cntlzdm) diff --git a/gcc/config/rs6000/rs6000-call.c b/gcc/config/rs6000/rs6000-call.c index 189497efb45..87699be8a07 100644 --- a/gcc/config/rs6000/rs6000-call.c +++ b/gcc/config/rs6000/rs6000-call.c @@ -5527,6 +5527,19 @@ const struct altivec_builtin_types altivec_overloaded_builtins[] = { RS6000_BTI_unsigned_V2DI, RS6000_BTI_unsigned_V2DI, RS6000_BTI_INTSI, RS6000_BTI_INTSI }, + /* Sign extend builtins that work work on ISA 3.0, not added until ISA 3.1 */ + { P9V_BUILTIN_VEC_VSIGNEXTI, P9V_BUILTIN_VSIGNEXTSB2W, + RS6000_BTI_V4SI, RS6000_BTI_V16QI, 0, 0 }, + { P9V_BUILTIN_VEC_VSIGNEXTI, P9V_BUILTIN_VSIGNEXTSH2W, + RS6000_BTI_V4SI, RS6000_BTI_V8HI, 0, 0 }, + + { P9V_BUILTIN_VEC_VSIGNEXTLL, P9V_BUILTIN_VSIGNEXTSB2D, + RS6000_BTI_V2DI, RS6000_BTI_V16QI, 0, 0 }, + { P9V_BUILTIN_VEC_VSIGNEXTLL, P9V_BUILTIN_VSIGNEXTSH2D, + RS6000_BTI_V2DI, RS6000_BTI_V8HI, 0, 0 }, + { P9V_BUILTIN_VEC_VSIGNEXTLL, P9V_BUILTIN_VSIGNEXTSW2D, + RS6000_BTI_V2DI, RS6000_BTI_V4SI, 0, 0 }, + /* Overloaded built-in functions for ISA3.1 (power10). */ { P10_BUILTIN_VEC_CLRL, P10_BUILTIN_VCLRLB, RS6000_BTI_V16QI, RS6000_BTI_V16QI, RS6000_BTI_UINTSI, 0 }, diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md index dd750210758..1153a01b4ef 100644 --- a/gcc/config/rs6000/vsx.md +++ b/gcc/config/rs6000/vsx.md @@ -4787,7 +4787,7 @@ "vextsh2<wd> %0,%1" [(set_attr "type" "vecexts")]) -(define_insn "*vsx_sign_extend_si_v2di" +(define_insn "vsx_sign_extend_si_v2di" [(set (match_operand:V2DI 0 "vsx_register_operand" "=v") (unspec:V2DI [(match_operand:V4SI 1 "vsx_register_operand" "v")] UNSPEC_VSX_SIGN_EXTEND))] diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 79833171c5a..cb501ab2d75 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -20754,6 +20754,21 @@ void vec_xst (vector unsigned char, int, vector unsigned char *); void vec_xst (vector unsigned char, int, unsigned char *); @end smallexample +uThe following sign extension builtins are provided. + +@smallexample +vector signed int vec_signexti (vector signed char a) +vector signed long long vec_signextll (vector signed char a) +vector signed int vec_signexti (vector signed short a) +vector signed long long vec_signextll (vector signed short a) +vector signed long long vec_signextll (vector signed int a) +@end smallexample + +Each element of the result is produced by sign-extending the element of the +input vector that would fall in the least significant portion of the result +element. For example, a sign-extension of a vector signed char to a vector +signed long long will sign extend the rightmost byte of each doubleword. + @node PowerPC AltiVec Built-in Functions Available on ISA 3.1 @subsubsection PowerPC AltiVec Built-in Functions Available on ISA 3.1 diff --git a/gcc/testsuite/gcc.target/powerpc/p9-sign_extend-runnable.c b/gcc/testsuite/gcc.target/powerpc/p9-sign_extend-runnable.c new file mode 100644 index 00000000000..7bf979c6fd4 --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/p9-sign_extend-runnable.c @@ -0,0 +1,128 @@ +/* { dg-do run { target { powerpc*-*-linux* && { lp64 && p9vector_hw } } } } */ +/* { dg-require-effective-target powerpc_p9vector_ok } */ +/* { dg-options "-O2 -mdejagnu-cpu=power9 -save-temps" } */ + +/* These builtins were not defined until ISA 3.1 but only require ISA 3.0 + support. */ + +/* { dg-final { scan-assembler-times {\mvextsb2w\M} 1 } } */ +/* { dg-final { scan-assembler-times {\mvextsb2d\M} 1 } } */ +/* { dg-final { scan-assembler-times {\mvextsh2w\M} 1 } } */ +/* { dg-final { scan-assembler-times {\mvextsh2d\M} 1 } } */ +/* { dg-final { scan-assembler-times {\mvextsw2d\M} 1 } } */ + +#include <altivec.h> + +#define DEBUG 0 + +#if DEBUG +#include <stdio.h> +#include <stdlib.h> +#endif + +void abort (void); + +int main () +{ + int i; + + vector signed char vec_arg_qi, vec_result_qi; + vector signed short int vec_arg_hi, vec_result_hi, vec_expected_hi; + vector signed int vec_arg_wi, vec_result_wi, vec_expected_wi; + vector signed long long vec_result_di, vec_expected_di; + + /* test sign extend byte to word */ + vec_arg_qi = (vector signed char) {1, 2, 3, 4, 5, 6, 7, 8, + -1, -2, -3, -4, -5, -6, -7, -8}; + vec_expected_wi = (vector signed int) {1, 5, -1, -5}; + + vec_result_wi = vec_signexti (vec_arg_qi); + + for (i = 0; i < 4; i++) + if (vec_result_wi[i] != vec_expected_wi[i]) { +#if DEBUG + printf("ERROR: vec_signexti(char, int): "); + printf("vec_result_wi[%d] != vec_expected_wi[%d]\n", + i, i); + printf("vec_result_wi[%d] = %d\n", i, vec_result_wi[i]); + printf("vec_expected_wi[%d] = %d\n", i, vec_expected_wi[i]); +#else + abort(); +#endif + } + + /* test sign extend byte to double */ + vec_arg_qi = (vector signed char){1, 2, 3, 4, 5, 6, 7, 8, + -1, -2, -3, -4, -5, -6, -7, -8}; + vec_expected_di = (vector signed long long int){1, -1}; + + vec_result_di = vec_signextll(vec_arg_qi); + + for (i = 0; i < 2; i++) + if (vec_result_di[i] != vec_expected_di[i]) { +#if DEBUG + printf("ERROR: vec_signextll(byte, long long int): "); + printf("vec_result_di[%d] != vec_expected_di[%d]\n", i, i); + printf("vec_result_di[%d] = %lld\n", i, vec_result_di[i]); + printf("vec_expected_di[%d] = %lld\n", i, vec_expected_di[i]); +#else + abort(); +#endif + } + + /* test sign extend short to word */ + vec_arg_hi = (vector signed short int){1, 2, 3, 4, -1, -2, -3, -4}; + vec_expected_wi = (vector signed int){1, 3, -1, -3}; + + vec_result_wi = vec_signexti(vec_arg_hi); + + for (i = 0; i < 4; i++) + if (vec_result_wi[i] != vec_expected_wi[i]) { +#if DEBUG + printf("ERROR: vec_signexti(short, int): "); + printf("vec_result_wi[%d] != vec_expected_wi[%d]\n", i, i); + printf("vec_result_wi[%d] = %d\n", i, vec_result_wi[i]); + printf("vec_expected_wi[%d] = %d\n", i, vec_expected_wi[i]); +#else + abort(); +#endif + } + + /* test sign extend short to double word */ + vec_arg_hi = (vector signed short int ){1, 3, 5, 7, -1, -3, -5, -7}; + vec_expected_di = (vector signed long long int){1, -1}; + + vec_result_di = vec_signextll(vec_arg_hi); + + for (i = 0; i < 2; i++) + if (vec_result_di[i] != vec_expected_di[i]) { +#if DEBUG + printf("ERROR: vec_signextll(short, double): "); + printf("vec_result_di[%d] != vec_expected_di[%d]\n", i, i); + printf("vec_result_di[%d] = %lld\n", i, vec_result_di[i]); + printf("vec_expected_di[%d] = %lld\n", i, vec_expected_di[i]); +#else + abort(); +#endif + } + + /* test sign extend word to double word */ + vec_arg_wi = (vector signed int ){1, 3, -1, -3}; + vec_expected_di = (vector signed long long int){1, -1}; + + vec_result_di = vec_signextll(vec_arg_wi); + + for (i = 0; i < 2; i++) + if (vec_result_di[i] != vec_expected_di[i]) { +#if DEBUG + printf("ERROR: vec_signextll(word, double): "); + printf("vec_result_di[%d] != vec_expected_di[%d]\n", i, i); + printf("vec_result_di[%d] = %lld\n", i, vec_result_di[i]); + printf("vec_expected_di[%d] = %lld\n", i, vec_expected_di[i]); +#else + abort(); +#endif + } + + return 0; +} -- 2.25.1