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Add SSE3 CPU feature detection.

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This commit is contained in:
Mike Pall 2011-02-01 19:28:03 +01:00
parent 992bc2caa3
commit c539c0cac8
2 changed files with 10 additions and 8 deletions
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1
src/lib_jit.c
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@ -530,6 +530,7 @@ static uint32_t jit_cpudetect(lua_State *L)
flags |= ((features[3] >> 15)&1) * JIT_F_CMOV;
flags |= ((features[3] >> 26)&1) * JIT_F_SSE2;
#if LJ_HASJIT
flags |= ((features[2] >> 0)&1) * JIT_F_SSE3;
flags |= ((features[2] >> 19)&1) * JIT_F_SSE4_1;
if (vendor[2] == 0x6c65746e) { /* Intel. */
if ((features[0] & 0x0ff00f00) == 0x00000f00) /* P4. */

17
src/lj_jit.h
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@ -14,17 +14,18 @@
/* CPU-specific JIT engine flags. */
#if LJ_TARGET_X86ORX64
#define JIT_F_CMOV 0x00000100
#define JIT_F_SSE2 0x00000200
#define JIT_F_SSE4_1 0x00000400
#define JIT_F_P4 0x00000800
#define JIT_F_PREFER_IMUL 0x00001000
#define JIT_F_SPLIT_XMM 0x00002000
#define JIT_F_LEA_AGU 0x00004000
#define JIT_F_CMOV 0x00000010
#define JIT_F_SSE2 0x00000020
#define JIT_F_SSE3 0x00000040
#define JIT_F_SSE4_1 0x00000080
#define JIT_F_P4 0x00000100
#define JIT_F_PREFER_IMUL 0x00000200
#define JIT_F_SPLIT_XMM 0x00000400
#define JIT_F_LEA_AGU 0x00000800
/* Names for the CPU-specific flags. Must match the order above. */
#define JIT_F_CPU_FIRST JIT_F_CMOV
#define JIT_F_CPUSTRING "\4CMOV\4SSE2\6SSE4.1\2P4\3AMD\2K8\4ATOM"
#define JIT_F_CPUSTRING "\4CMOV\4SSE2\4SSE3\6SSE4.1\2P4\3AMD\2K8\4ATOM"
#else
#error "Missing CPU-specific JIT engine flags"
#endif