i386: Allow MMX intrinsic emulation with SSE

Allow MMX intrinsic emulation with SSE/SSE2/SSSE3.  Don't enable MMX ISA
by default with TARGET_MMX_WITH_SSE.

For pr82483-1.c and pr82483-2.c, "-mssse3 -mno-mmx" compiles in 64-bit
mode since MMX intrinsics can be emulated wit SSE.

gcc/

	PR target/89021
	* config/i386/i386-builtin.def: Enable MMX intrinsics with
	SSE/SSE2/SSSE3.
	* config/i386/i386-builtins.c (ix86_init_mmx_sse_builtins):
	Likewise.
	* config/i386/i386-expand.c (ix86_expand_builtin): Allow
	SSE/SSE2/SSSE3 to emulate MMX intrinsics with TARGET_MMX_WITH_SSE.
	* config/i386/mmintrin.h: Only require SSE2 if __MMX_WITH_SSE__
	is defined.

gcc/testsuite/

	PR target/89021
	* gcc.target/i386/pr82483-1.c: Error only on ia32.
	* gcc.target/i386/pr82483-2.c: Likewise.

From-SVN: r271252

gcc/ChangeLog

 2019-05-15  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR target/89021
+	* config/i386/i386-builtin.def: Enable MMX intrinsics with
+	SSE/SSE2/SSSE3.
+	* config/i386/i386-builtins.c (ix86_init_mmx_sse_builtins):
+	Likewise.
+	* config/i386/i386-expand.c (ix86_expand_builtin): Allow
+	SSE/SSE2/SSSE3 to emulate MMX intrinsics with TARGET_MMX_WITH_SSE.
+	* config/i386/mmintrin.h: Only require SSE2 if __MMX_WITH_SSE__
+	is defined.
+
+2019-05-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/89021
 	* config/i386/mmx.md (*vec_dupv2sf): Changed to
 	define_insn_and_split to support SSE emulation.
 	(*vec_extractv2sf_0): Likewise.

gcc/config/i386/i386-builtins.c

@@ -1058,14 +1058,17 @@ ix86_init_mmx_sse_builtins (void)
 	       VOID_FTYPE_UNSIGNED, IX86_BUILTIN_XABORT);
 
   /* MMX access to the vec_init patterns.  */
-  def_builtin_const (OPTION_MASK_ISA_MMX, 0, "__builtin_ia32_vec_init_v2si",
+  def_builtin_const (OPTION_MASK_ISA_MMX | OPTION_MASK_ISA_SSE2, 0,
+		     "__builtin_ia32_vec_init_v2si",
 		     V2SI_FTYPE_INT_INT, IX86_BUILTIN_VEC_INIT_V2SI);
 
-  def_builtin_const (OPTION_MASK_ISA_MMX, 0, "__builtin_ia32_vec_init_v4hi",
+  def_builtin_const (OPTION_MASK_ISA_MMX | OPTION_MASK_ISA_SSE2, 0,
+		     "__builtin_ia32_vec_init_v4hi",
 		     V4HI_FTYPE_HI_HI_HI_HI,
 		     IX86_BUILTIN_VEC_INIT_V4HI);
 
-  def_builtin_const (OPTION_MASK_ISA_MMX, 0, "__builtin_ia32_vec_init_v8qi",
+  def_builtin_const (OPTION_MASK_ISA_MMX | OPTION_MASK_ISA_SSE2, 0,
+		     "__builtin_ia32_vec_init_v8qi",
 		     V8QI_FTYPE_QI_QI_QI_QI_QI_QI_QI_QI,
 		     IX86_BUILTIN_VEC_INIT_V8QI);
 
@@ -1087,7 +1090,8 @@ ix86_init_mmx_sse_builtins (void)
 		     "__builtin_ia32_vec_ext_v4hi",
 		     HI_FTYPE_V4HI_INT, IX86_BUILTIN_VEC_EXT_V4HI);
 
-  def_builtin_const (OPTION_MASK_ISA_MMX, 0, "__builtin_ia32_vec_ext_v2si",
+  def_builtin_const (OPTION_MASK_ISA_MMX | OPTION_MASK_ISA_SSE2, 0,
+		     "__builtin_ia32_vec_ext_v2si",
 		     SI_FTYPE_V2SI_INT, IX86_BUILTIN_VEC_EXT_V2SI);
 
   def_builtin_const (OPTION_MASK_ISA_SSE2, 0, "__builtin_ia32_vec_ext_v16qi",

gcc/config/i386/i386-expand.c

@@ -10936,6 +10936,23 @@ ix86_expand_builtin (tree exp, rtx target, rtx subtarget,
        == (OPTION_MASK_ISA_FMA | OPTION_MASK_ISA_FMA4))
       && (isa & (OPTION_MASK_ISA_FMA | OPTION_MASK_ISA_FMA4)) != 0)
     isa |= (OPTION_MASK_ISA_FMA | OPTION_MASK_ISA_FMA4);
+  /* Use SSE/SSE2/SSSE3 to emulate MMX intrinsics in 64-bit mode when
+     MMX is disabled.  */
+  if (TARGET_MMX_WITH_SSE)
+    {
+      if (((bisa & (OPTION_MASK_ISA_SSE | OPTION_MASK_ISA_MMX))
+	   == (OPTION_MASK_ISA_SSE | OPTION_MASK_ISA_MMX))
+	  && (isa & (OPTION_MASK_ISA_SSE | OPTION_MASK_ISA_MMX)) != 0)
+	isa |= (OPTION_MASK_ISA_SSE | OPTION_MASK_ISA_MMX);
+      if (((bisa & (OPTION_MASK_ISA_SSE2 | OPTION_MASK_ISA_MMX))
+	   == (OPTION_MASK_ISA_SSE2 | OPTION_MASK_ISA_MMX))
+	  && (isa & (OPTION_MASK_ISA_SSE2 | OPTION_MASK_ISA_MMX)) != 0)
+	isa |= (OPTION_MASK_ISA_SSE2 | OPTION_MASK_ISA_MMX);
+      if (((bisa & (OPTION_MASK_ISA_SSSE3 | OPTION_MASK_ISA_MMX))
+	   == (OPTION_MASK_ISA_SSSE3 | OPTION_MASK_ISA_MMX))
+	  && (isa & (OPTION_MASK_ISA_SSSE3 | OPTION_MASK_ISA_MMX)) != 0)
+	isa |= (OPTION_MASK_ISA_SSSE3 | OPTION_MASK_ISA_MMX);
+    }
   if ((bisa & isa) != bisa || (bisa2 & isa2) != bisa2)
     {
       bool add_abi_p = bisa & OPTION_MASK_ISA_64BIT;

gcc/config/i386/mmintrin.h

@@ -29,7 +29,9 @@
 
 #if defined __x86_64__ && !defined __SSE__ || !defined __MMX__
 #pragma GCC push_options
-#ifdef __x86_64__
+#ifdef __MMX_WITH_SSE__
+#pragma GCC target("sse2")
+#elif defined __x86_64__
 #pragma GCC target("sse,mmx")
 #else
 #pragma GCC target("mmx")
@@ -315,7 +317,11 @@ _m_paddd (__m64 __m1, __m64 __m2)
 /* Add the 64-bit values in M1 to the 64-bit values in M2.  */
 #ifndef __SSE2__
 #pragma GCC push_options
+#ifdef __MMX_WITH_SSE__
+#pragma GCC target("sse2")
+#else
 #pragma GCC target("sse2,mmx")
+#endif
 #define __DISABLE_SSE2__
 #endif /* __SSE2__ */
 
@@ -427,7 +433,11 @@ _m_psubd (__m64 __m1, __m64 __m2)
 /* Add the 64-bit values in M1 to the 64-bit values in M2.  */
 #ifndef __SSE2__
 #pragma GCC push_options
+#ifdef __MMX_WITH_SSE__
+#pragma GCC target("sse2")
+#else
 #pragma GCC target("sse2,mmx")
+#endif
 #define __DISABLE_SSE2__
 #endif /* __SSE2__ */
 

gcc/testsuite/ChangeLog

+2019-05-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/89021
+	* gcc.target/i386/pr82483-1.c: Error only on ia32.
+	* gcc.target/i386/pr82483-2.c: Likewise.
+
 2019-05-15  Martin Liska  <mliska@suse.cz>
 
 	PR middle-end/90478

gcc/testsuite/gcc.target/i386/pr82483-1.c

 /* PR target/82483 */
 /* { dg-do compile } */
 /* { dg-options "-mssse3 -mno-mmx -Wno-psabi" } */
-/* { dg-error "needs isa option" "" { target *-*-* } 0 } */
+/* { dg-error "needs isa option" "" { target ia32 } 0 } */
 
 #include <x86intrin.h>
 

gcc/testsuite/gcc.target/i386/pr82483-2.c

 /* PR target/82483 */
 /* { dg-do compile } */
 /* { dg-options "-mssse3 -mno-mmx -Wno-psabi" } */
-/* { dg-error "needs isa option" "" { target *-*-* } 0 } */
+/* { dg-error "needs isa option" "" { target ia32 } 0 } */
 
 #include <x86intrin.h>