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Use movl+xchgl instead of pushl+popl.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31572 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-11-08 20:35:37 +00:00
parent 0d53826f36
commit aacf99964f
1 changed files with 2 additions and 3 deletions
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5
lib/Target/X86/X86Subtarget.cpp
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@ -44,10 +44,9 @@ bool X86::GetCpuIDAndInfo(unsigned value, unsigned *rEAX, unsigned *rEBX,
return false;
#elif defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
#if defined(__GNUC__)
asm ("pushl\t%%ebx\n\t"
asm ("movl\t%%ebx, %%esi\n\t"
"cpuid\n\t"
"movl\t%%ebx, %%esi\n\t"
"popl\t%%ebx"
"xchgl\t%%ebx, %%esi\n\t"
: "=a" (*rEAX),
"=S" (*rEBX),
"=c" (*rECX),