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make this work on non-native hosts

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25734 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-01-28 06:05:41 +00:00
parent 969097968c
commit 1e39a15b42
1 changed files with 7 additions and 3 deletions
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10
lib/Target/X86/X86Subtarget.cpp
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@ -23,7 +23,9 @@ namespace {
cl::desc("Enable sse on X86"));
}
static void GetCpuIDAndInfo(unsigned value, unsigned *EAX, unsigned *EBX,
/// GetCpuIDAndInfo - Execute the specified cpuid and return the 4 values in the
/// specified arguments. If we can't run cpuid on the host, return true.
static bool GetCpuIDAndInfo(unsigned value, unsigned *EAX, unsigned *EBX,
unsigned *ECX, unsigned *EDX) {
#if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
#if defined(__GNUC__)
@ -36,13 +38,16 @@ static void GetCpuIDAndInfo(unsigned value, unsigned *EAX, unsigned *EBX,
"=c" (*ECX),
"=d" (*EDX)
: "a" (value));
return false;
#endif
#endif
return true;
}
static const char *GetCurrentX86CPU() {
unsigned EAX = 0, EBX = 0, ECX = 0, EDX = 0;
GetCpuIDAndInfo(0x1, &EAX, &EBX, &ECX, &EDX);
if (GetCpuIDAndInfo(0x1, &EAX, &EBX, &ECX, &EDX))
return "generic";
unsigned Family = (EAX & (0xffffffff >> (32 - 4)) << 8) >> 8; // Bits 8 - 11
unsigned Model = (EAX & (0xffffffff >> (32 - 4)) << 4) >> 4; // Bits 4 - 7
GetCpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
@ -58,7 +63,6 @@ static const char *GetCurrentX86CPU() {
case 4: return "pentium-mmx";
default: return "pentium";
}
break;
case 6:
switch (Model) {
case 1: return "pentiumpro";