From aacf99964f6f37d566f9fda5160b3826f3ce2da4 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Wed, 8 Nov 2006 20:35:37 +0000 Subject: [PATCH] Use movl+xchgl instead of pushl+popl. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31572 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86Subtarget.cpp | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp index 804ba39f69a..3ac8a38b314 100644 --- a/lib/Target/X86/X86Subtarget.cpp +++ b/lib/Target/X86/X86Subtarget.cpp @@ -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),