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compute the HasSSE3 bit correctly, patch by Nikolai Saoukh.

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llvm-svn: 113147
This commit is contained in:
Chris Lattner 2010-09-06 05:19:44 +00:00
parent 6e6a535055
commit 7cd17a7a4a
1 changed files with 8 additions and 9 deletions
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17
lib/System/Host.cpp
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@ -92,7 +92,8 @@ static bool GetX86CpuIDAndInfo(unsigned value, unsigned *rEAX,
return true;
}
static void DetectX86FamilyModel(unsigned EAX, unsigned &Family, unsigned &Model) {
static void DetectX86FamilyModel(unsigned EAX, unsigned &Family,
unsigned &Model) {
Family = (EAX >> 8) & 0xf; // Bits 8 - 11
Model = (EAX >> 4) & 0xf; // Bits 4 - 7
if (Family == 6 || Family == 0xf) {
@ -112,9 +113,9 @@ std::string sys::getHostCPUName() {
unsigned Model = 0;
DetectX86FamilyModel(EAX, Family, Model);
bool HasSSE3 = (ECX & 0x1);
GetX86CpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
bool Em64T = (EDX >> 29) & 0x1;
bool HasSSE3 = (ECX & 0x1);
union {
unsigned u[3];
@ -277,14 +278,12 @@ std::string sys::getHostCPUName() {
default: return "athlon";
}
case 15:
if (HasSSE3) {
if (HasSSE3)
return "k8-sse3";
} else {
switch (Model) {
case 1: return "opteron";
case 5: return "athlon-fx"; // also opteron
default: return "athlon64";
}
switch (Model) {
case 1: return "opteron";
case 5: return "athlon-fx"; // also opteron
default: return "athlon64";
}
case 16:
return "amdfam10";