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| author | Jussi Kivilinna <[email protected]> | 2022-02-24 19:28:15 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <[email protected]> | 2022-02-24 19:36:13 +0200 |
| commit | 6951e0f591ccff24b9ce2e43c2dcab955e3302c4 (patch) | |
| tree | 8c72a6247f6de0c511b2f1c53c8248b2207cf880 | |
| parent | d8825601f10aec20db118496bb68a5cd1372b7da (diff) | |
| download | libgcrypt-6951e0f591ccff24b9ce2e43c2dcab955e3302c4.tar.gz libgcrypt-6951e0f591ccff24b9ce2e43c2dcab955e3302c4.tar.bz2 libgcrypt-6951e0f591ccff24b9ce2e43c2dcab955e3302c4.zip | |
powerpc: check for missing optimization level for vector register usage
* cipher/Makefile.am [ENABLE_PPC_VCRYPTO_EXTRA_CFLAGS]
(ppc_vcrypto_cflags): Add '-O2'.
* configure.ac (gcry_cv_cc_ppc_altivec): Check for missing compiler
optimization with vec_sld_u32 inline function.
* configure.ac (gcry_cv_cc_ppc_altivec_cflags): Check for missing
compiler optimization with vec_sld_u32 inline function; Add '-O2' to
CFLAGS.
--
Attempt to enable optimization for PPC vector register implementations
if PPC altivec check does not pass otherwise.
GnuPG-bug-id: T5785
Signed-off-by: Jussi Kivilinna <[email protected]>
| -rw-r--r-- | cipher/Makefile.am | 2 | ||||
| -rw-r--r-- | configure.ac | 16 |
2 files changed, 15 insertions, 3 deletions
diff --git a/cipher/Makefile.am b/cipher/Makefile.am index 6c1c7693..a7cbf3fc 100644 --- a/cipher/Makefile.am +++ b/cipher/Makefile.am @@ -222,7 +222,7 @@ crc-intel-pclmul.lo: $(srcdir)/crc-intel-pclmul.c Makefile `echo $(LTCOMPILE) -c $< | $(instrumentation_munging) ` if ENABLE_PPC_VCRYPTO_EXTRA_CFLAGS -ppc_vcrypto_cflags = -maltivec -mvsx -mcrypto +ppc_vcrypto_cflags = -O2 -maltivec -mvsx -mcrypto else ppc_vcrypto_cflags = endif diff --git a/configure.ac b/configure.ac index 89df9434..f5363f22 100644 --- a/configure.ac +++ b/configure.ac @@ -1909,7 +1909,7 @@ fi # # Check whether PowerPC AltiVec/VSX intrinsics # -AC_CACHE_CHECK([whether compiler supports PowerPC AltiVec/VSX intrinsics], +AC_CACHE_CHECK([whether compiler supports PowerPC AltiVec/VSX/crypto intrinsics], [gcry_cv_cc_ppc_altivec], [if test "$mpi_cpu_arch" != "ppc" || test "$try_asm_modules" != "yes" ; then @@ -1920,10 +1920,16 @@ AC_CACHE_CHECK([whether compiler supports PowerPC AltiVec/VSX intrinsics], [[#include <altivec.h> typedef vector unsigned char block; typedef vector unsigned int vecu32; + static inline __attribute__((always_inline)) vecu32 + vec_sld_u32(vecu32 a, vecu32 b, unsigned int idx) + { + return vec_sld (a, b, (4 * idx) & 15); + } block fn(block in) { block t = vec_perm (in, in, vec_vsx_ld (0, (unsigned char*)0)); vecu32 y = vec_vsx_ld (0, (unsigned int*)0); + y = vec_sld_u32 (y, y, 3); return vec_cipher_be (t, in) ^ (block)y; } ]])], @@ -1935,7 +1941,7 @@ if test "$gcry_cv_cc_ppc_altivec" = "yes" ; then fi _gcc_cflags_save=$CFLAGS -CFLAGS="$CFLAGS -maltivec -mvsx -mcrypto" +CFLAGS="$CFLAGS -O2 -maltivec -mvsx -mcrypto" if test "$gcry_cv_cc_ppc_altivec" = "no" && test "$mpi_cpu_arch" = "ppc" && @@ -1947,10 +1953,16 @@ if test "$gcry_cv_cc_ppc_altivec" = "no" && [[#include <altivec.h> typedef vector unsigned char block; typedef vector unsigned int vecu32; + static inline __attribute__((always_inline)) vecu32 + vec_sld_u32(vecu32 a, vecu32 b, unsigned int idx) + { + return vec_sld (a, b, (4 * idx) & 15); + } block fn(block in) { block t = vec_perm (in, in, vec_vsx_ld (0, (unsigned char*)0)); vecu32 y = vec_vsx_ld (0, (unsigned int*)0); + y = vec_sld_u32 (y, y, 3); return vec_cipher_be (t, in) ^ (block)y; }]])], [gcry_cv_cc_ppc_altivec_cflags=yes])]) |