* config/i386/i386.h (x86_prefetchw): New global variable.

[pf3gnuchains/gcc-fork.git] / gcc / config / i386 / i386.c

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index ab7b7ff..c2c6cd0 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2428,9 +2428,12 @@ enum processor_type ix86_tune;
 /* Which instruction set architecture to use.  */
 enum processor_type ix86_arch;
 
-/* true if sse prefetch instruction is not NOOP.  */
+/* True if processor has SSE prefetch instruction.  */
 int x86_prefetch_sse;
 
+/* True if processor has prefetchw instruction.  */
+int x86_prefetchw;
+ 
 /* -mstackrealign option */
 static const char ix86_force_align_arg_pointer_string[]
   = "force_align_arg_pointer";
@@ -2931,6 +2934,8 @@ ix86_option_override_internal (bool main_args_p)
 #define PTA_XOP                        (HOST_WIDE_INT_1 << 29)
 #define PTA_AVX2               (HOST_WIDE_INT_1 << 30)
 #define PTA_BMI2               (HOST_WIDE_INT_1 << 31)
+#define PTA_PREFETCHW          (HOST_WIDE_INT_1 << 32)
+
 /* if this reaches 64, need to widen struct pta flags below */
 
   static struct pta
@@ -2989,12 +2994,12 @@ ix86_option_override_internal (bool main_args_p)
        | PTA_SSSE3 | PTA_SSE4_1 | PTA_SSE4_2 | PTA_AVX | PTA_AVX2
        | PTA_CX16 | PTA_POPCNT | PTA_AES | PTA_PCLMUL | PTA_FSGSBASE
        | PTA_RDRND | PTA_F16C | PTA_BMI | PTA_BMI2 | PTA_LZCNT
-        | PTA_FMA | PTA_MOVBE},
+       | PTA_FMA | PTA_MOVBE},
       {"atom", PROCESSOR_ATOM, CPU_ATOM,
        PTA_64BIT | PTA_MMX | PTA_SSE | PTA_SSE2 | PTA_SSE3
        | PTA_SSSE3 | PTA_CX16 | PTA_MOVBE},
       {"geode", PROCESSOR_GEODE, CPU_GEODE,
-       PTA_MMX | PTA_3DNOW | PTA_3DNOW_A |PTA_PREFETCH_SSE},
+       PTA_MMX | PTA_3DNOW | PTA_3DNOW_A | PTA_PREFETCH_SSE},
       {"k6", PROCESSOR_K6, CPU_K6, PTA_MMX},
       {"k6-2", PROCESSOR_K6, CPU_K6, PTA_MMX | PTA_3DNOW},
       {"k6-3", PROCESSOR_K6, CPU_K6, PTA_MMX | PTA_3DNOW},
@@ -3020,7 +3025,7 @@ ix86_option_override_internal (bool main_args_p)
        PTA_64BIT | PTA_MMX | PTA_3DNOW | PTA_3DNOW_A | PTA_SSE
        | PTA_SSE2 | PTA_NO_SAHF},
       {"opteron-sse3", PROCESSOR_K8, CPU_K8,
-        PTA_64BIT | PTA_MMX | PTA_3DNOW | PTA_3DNOW_A | PTA_SSE
+       PTA_64BIT | PTA_MMX | PTA_3DNOW | PTA_3DNOW_A | PTA_SSE
        | PTA_SSE2 | PTA_SSE3 | PTA_NO_SAHF},
       {"athlon64", PROCESSOR_K8, CPU_K8,
        PTA_64BIT | PTA_MMX | PTA_3DNOW | PTA_3DNOW_A | PTA_SSE
@@ -3038,19 +3043,19 @@ ix86_option_override_internal (bool main_args_p)
        PTA_64BIT | PTA_MMX | PTA_3DNOW | PTA_3DNOW_A | PTA_SSE
        | PTA_SSE2 | PTA_SSE3 | PTA_SSE4A | PTA_CX16 | PTA_ABM},
       {"bdver1", PROCESSOR_BDVER1, CPU_BDVER1,
-       PTA_64BIT | PTA_MMX | PTA_SSE | PTA_SSE2 | PTA_SSE3
-       | PTA_SSE4A | PTA_CX16 | PTA_ABM | PTA_SSSE3 | PTA_SSE4_1
-       | PTA_SSE4_2 | PTA_AES | PTA_PCLMUL | PTA_AVX | PTA_FMA4
-       | PTA_XOP | PTA_LWP},
+       PTA_64BIT | PTA_MMX | PTA_PREFETCHW | PTA_SSE | PTA_SSE2
+       | PTA_SSE3 | PTA_SSE4A | PTA_CX16 | PTA_ABM | PTA_SSSE3
+       | PTA_SSE4_1 | PTA_SSE4_2 | PTA_AES | PTA_PCLMUL | PTA_AVX
+       | PTA_FMA4 | PTA_XOP | PTA_LWP},
       {"bdver2", PROCESSOR_BDVER2, CPU_BDVER2,
-       PTA_64BIT | PTA_MMX | PTA_SSE | PTA_SSE2 | PTA_SSE3
-       | PTA_SSE4A | PTA_CX16 | PTA_ABM | PTA_SSSE3 | PTA_SSE4_1
-       | PTA_SSE4_2 | PTA_AES | PTA_PCLMUL | PTA_AVX | PTA_FMA4
-       | PTA_XOP | PTA_LWP | PTA_BMI | PTA_TBM | PTA_F16C
+       PTA_64BIT | PTA_MMX | PTA_PREFETCHW | PTA_SSE | PTA_SSE2
+       | PTA_SSE3 | PTA_SSE4A | PTA_CX16 | PTA_ABM | PTA_SSSE3
+       | PTA_SSE4_1 | PTA_SSE4_2 | PTA_AES | PTA_PCLMUL | PTA_AVX
+       | PTA_FMA4 | PTA_XOP | PTA_LWP | PTA_BMI | PTA_TBM | PTA_F16C
        | PTA_FMA},
       {"btver1", PROCESSOR_BTVER1, CPU_GENERIC64,
-        PTA_64BIT | PTA_MMX |  PTA_SSE  | PTA_SSE2 | PTA_SSE3
-        | PTA_SSSE3 | PTA_SSE4A |PTA_ABM | PTA_CX16},
+       PTA_64BIT | PTA_MMX | PTA_PREFETCHW | PTA_SSE | PTA_SSE2
+       | PTA_SSE3 | PTA_SSSE3 | PTA_SSE4A | PTA_ABM | PTA_CX16},
       {"generic32", PROCESSOR_GENERIC32, CPU_PENTIUMPRO,
        0 /* flags are only used for -march switch.  */ },
       {"generic64", PROCESSOR_GENERIC64, CPU_GENERIC64,
@@ -3358,6 +3363,8 @@ ix86_option_override_internal (bool main_args_p)
          ix86_isa_flags |= OPTION_MASK_ISA_F16C;
        if (processor_alias_table[i].flags & (PTA_PREFETCH_SSE | PTA_SSE))
          x86_prefetch_sse = true;
+       if (processor_alias_table[i].flags & PTA_PREFETCHW)
+         x86_prefetchw = true;
 
        break;
       }