maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Fix x86 CPU id detection to identify Penryn (and future processors). 

llvm-svn: 61556
This commit is contained in:
Evan Cheng 2009-01-02 05:29:20 +00:00
parent 1671a309fd
commit 13f3a33f44
1 changed files with 11 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
llvm/lib/Target/X86/X86Subtarget.cpp
View File

@ -180,8 +180,16 @@ static const char *GetCurrentX86CPU() {
unsigned EAX = 0, EBX = 0, ECX = 0, EDX = 0;
if (X86::GetCpuIDAndInfo(0x1, &EAX, &EBX, &ECX, &EDX))
return "generic";
unsigned Family = (EAX >> 8) & 0xf; // Bits 8 - 11
unsigned Model = (EAX >> 4) & 0xf; // Bits 4 - 7
unsigned Family = (EAX >> 8) & 0xf; // Bits 8 - 11
unsigned Model = (EAX >> 4) & 0xf; // Bits 4 - 7
if (Family == 6 || Family == 0xf) {
if (Family == 0xf)
// Examine extended family ID if family ID is F.
Family += (EAX >> 20) & 0xff; // Bits 20 - 27
// Examine extended model ID if family ID is 6 or F.
Model += ((EAX >> 16) & 0xf) << 4; // Bits 16 - 19
}
X86::GetCpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
bool Em64T = (EDX >> 29) & 0x1;
@ -216,6 +224,7 @@ static const char *GetCurrentX86CPU() {
case 13: return "pentium-m";
case 14: return "yonah";
case 15: return "core2";
case 23: return "penryn";
default: return "i686";
}
case 15: {