Hi! While the documentation only mentions AES resp. PCLMUL CPUIDs for these intrinsics, they use and return V2DImode vectors and V2DImode is only in VALID_SSE2_REG_MODE and VALID_AVX512VL_128_REG_MODE, so without -msse2 we can't create registers with that mode.
Fixed thusly, bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk? This isn't really backportable to older branches, unless r256281 is backported too. 2018-02-12 Jakub Jelinek <ja...@redhat.com> PR target/84335 * config/i386/i386.c (ix86_init_mmx_sse_builtins): Pass OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2 instead of OPTION_MASK_ISA_AES as first argument to def_builtin_const for AES builtins. Pass OPTION_MASK_ISA_PCLMUL | OPTION_MASK_ISA_SSE2 instead of OPTION_MASK_ISA_PCLMUL as first argument to def_builtin_const for __builtin_ia32_pclmulqdq128 builtin. * config/i386/wmmintrin.h: If __SSE2__ is not defined, enable it temporarily for AES and PCLMUL builtins. * gcc.target/i386/pr84335.c: New test. --- gcc/config/i386/i386.c.jj 2018-02-09 06:44:38.737804246 +0100 +++ gcc/config/i386/i386.c 2018-02-12 16:29:11.731233919 +0100 @@ -31282,21 +31282,28 @@ ix86_init_mmx_sse_builtins (void) VOID_FTYPE_UNSIGNED_UNSIGNED, IX86_BUILTIN_MWAIT); /* AES */ - def_builtin_const (OPTION_MASK_ISA_AES, "__builtin_ia32_aesenc128", + def_builtin_const (OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2, + "__builtin_ia32_aesenc128", V2DI_FTYPE_V2DI_V2DI, IX86_BUILTIN_AESENC128); - def_builtin_const (OPTION_MASK_ISA_AES, "__builtin_ia32_aesenclast128", + def_builtin_const (OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2, + "__builtin_ia32_aesenclast128", V2DI_FTYPE_V2DI_V2DI, IX86_BUILTIN_AESENCLAST128); - def_builtin_const (OPTION_MASK_ISA_AES, "__builtin_ia32_aesdec128", + def_builtin_const (OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2, + "__builtin_ia32_aesdec128", V2DI_FTYPE_V2DI_V2DI, IX86_BUILTIN_AESDEC128); - def_builtin_const (OPTION_MASK_ISA_AES, "__builtin_ia32_aesdeclast128", + def_builtin_const (OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2, + "__builtin_ia32_aesdeclast128", V2DI_FTYPE_V2DI_V2DI, IX86_BUILTIN_AESDECLAST128); - def_builtin_const (OPTION_MASK_ISA_AES, "__builtin_ia32_aesimc128", + def_builtin_const (OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2, + "__builtin_ia32_aesimc128", V2DI_FTYPE_V2DI, IX86_BUILTIN_AESIMC128); - def_builtin_const (OPTION_MASK_ISA_AES, "__builtin_ia32_aeskeygenassist128", + def_builtin_const (OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2, + "__builtin_ia32_aeskeygenassist128", V2DI_FTYPE_V2DI_INT, IX86_BUILTIN_AESKEYGENASSIST128); /* PCLMUL */ - def_builtin_const (OPTION_MASK_ISA_PCLMUL, "__builtin_ia32_pclmulqdq128", + def_builtin_const (OPTION_MASK_ISA_PCLMUL | OPTION_MASK_ISA_SSE2, + "__builtin_ia32_pclmulqdq128", V2DI_FTYPE_V2DI_V2DI_INT, IX86_BUILTIN_PCLMULQDQ128); /* RDRND */ --- gcc/config/i386/wmmintrin.h.jj 2018-01-03 10:20:05.953535684 +0100 +++ gcc/config/i386/wmmintrin.h 2018-02-12 16:25:32.526060590 +0100 @@ -32,9 +32,9 @@ /* AES */ -#ifndef __AES__ +#if !defined(__AES__) || !defined(__SSE2__) #pragma GCC push_options -#pragma GCC target("aes") +#pragma GCC target("aes,sse2") #define __DISABLE_AES__ #endif /* __AES__ */ @@ -101,9 +101,9 @@ _mm_aeskeygenassist_si128 (__m128i __X, /* PCLMUL */ -#ifndef __PCLMUL__ +#if !defined(__PCLMUL__) || !defined(__SSE2__) #pragma GCC push_options -#pragma GCC target("pclmul") +#pragma GCC target("pclmul,sse2") #define __DISABLE_PCLMUL__ #endif /* __PCLMUL__ */ --- gcc/testsuite/gcc.target/i386/pr84335.c.jj 2018-02-12 16:37:55.304353911 +0100 +++ gcc/testsuite/gcc.target/i386/pr84335.c 2018-02-12 16:37:33.230351025 +0100 @@ -0,0 +1,10 @@ +/* PR target/84335 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -maes -mno-sse2" } */ +typedef long long V __attribute__ ((__vector_size__ (16))); + +V +foo (V *a, V *b) +{ + return __builtin_ia32_aesenc128 (*a, *b); /* { dg-error "needs isa option" } */ +} Jakub