* config/i386/i386.h (TARGET_SUBTARGET64_ISA_DEFAULT):

	Enable MMX, SSE and SSE2 by default.
	* config/i386/i386.c (ix86_option_override_internal): Do not
	explicitly set MMX, SSE and SSE2 flags for TARGET_64BIT here.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@268917 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d3f970613933caf07acabd8c06f3bb2d801c5877..a41a0a9151f798e0b9cbf29455ed5a15c7ee5444 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2019-02-15  Uroš Bizjak  <ubizjak@gmail.com>
+
+       * config/i386/i386.h (TARGET_SUBTARGET64_ISA_DEFAULT):
+       Enable MMX, SSE and SSE2 by default.
+       * config/i386/i386.c (ix86_option_override_internal): Do not
+       explicitly set MMX, SSE and SSE2 flags for TARGET_64BIT here.
+
 2019-02-14  Jakub Jelinek  <jakub@redhat.com>
 
        PR rtl-optimization/89354

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index fd05873ba39fa94ace525a0d24da5170d26fc1e4..609273e4fc45c79f04f97ee0a060f7621c5667ba 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -4165,14 +4165,9 @@ ix86_option_override_internal (bool main_args_p,
       opts->x_target_flags
        |= TARGET_SUBTARGET64_DEFAULT & ~opts_set->x_target_flags;
 
-      /* Enable by default the SSE and MMX builtins.  Do allow the user to
-        explicitly disable any of these.  In particular, disabling SSE and
-        MMX for kernel code is extremely useful.  */
       if (!ix86_arch_specified)
-      opts->x_ix86_isa_flags
-       |= ((OPTION_MASK_ISA_SSE2 | OPTION_MASK_ISA_SSE | OPTION_MASK_ISA_MMX
-            | TARGET_SUBTARGET64_ISA_DEFAULT)
-            & ~opts->x_ix86_isa_flags_explicit);
+       opts->x_ix86_isa_flags
+         |= TARGET_SUBTARGET64_ISA_DEFAULT & ~opts->x_ix86_isa_flags_explicit;
 
       if (TARGET_RTD_P (opts->x_target_flags))
        warning (0,

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 83b025e0cf5d93c5e0c2f30c41d3c50d490db26e..d9039060997b04cec523b0b71bc5c372d97b27c1 100644 (file)
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -633,7 +633,9 @@ extern tree x86_mfence;
 
 /* Extra bits to force on w/ 64-bit mode.  */
 #define TARGET_SUBTARGET64_DEFAULT 0
-#define TARGET_SUBTARGET64_ISA_DEFAULT 0
+/* Enable MMX, SSE and SSE2 by default.  */
+#define TARGET_SUBTARGET64_ISA_DEFAULT \
+  (OPTION_MASK_ISA_MMX | OPTION_MASK_ISA_SSE | OPTION_MASK_ISA_SSE2)
 
 /* Replace MACH-O, ifdefs by in-line tests, where possible. 
    (a) Macros defined in config/i386/darwin.h  */