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Update cpuid code for clang-cl 

The clang-cl compiler defines `__llvm__` but not `__GNUC__`. The `__cpuid` intrinsic doesn't seem to exist with clang-cl, so the code won't link properly. The `__GNUC__` versions of these functions will work properly on Windows with clang-cl.
This commit is contained in:
Nicolas Noble 2021-03-02 21:39:38 -08:00 committed by Ozkan Sezer
parent 4de0c74aa7
commit 6158621610
1 changed files with 4 additions and 4 deletions
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8
src/cpuinfo/SDL_cpuinfo.c
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@ -129,7 +129,7 @@ CPU_haveCPUID(void)
/* *INDENT-OFF* */
#ifndef SDL_CPUINFO_DISABLED
#if defined(__GNUC__) && defined(__i386__)
#if (defined(__GNUC__) || defined(__llvm__)) && defined(__i386__)
__asm__ (
" pushfl # Get original EFLAGS \n"
" popl %%eax \n"
@ -147,7 +147,7 @@ CPU_haveCPUID(void)
:
: "%eax", "%ecx"
);
#elif defined(__GNUC__) && defined(__x86_64__)
#elif (defined(__GNUC__) || defined(__llvm__)) && defined(__x86_64__)
/* Technically, if this is being compiled under __x86_64__ then it has
CPUid by definition. But it's nice to be able to prove it. :) */
__asm__ (
@ -220,7 +220,7 @@ done:
return has_CPUID;
}
#if defined(__GNUC__) && defined(__i386__)
#if (defined(__GNUC__) || defined(__llvm__)) && defined(__i386__)
#define cpuid(func, a, b, c, d) \
__asm__ __volatile__ ( \
" pushl %%ebx \n" \
@ -229,7 +229,7 @@ done:
" movl %%ebx, %%esi \n" \
" popl %%ebx \n" : \
"=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func))
#elif defined(__GNUC__) && defined(__x86_64__)
#elif (defined(__GNUC__) || defined(__llvm__)) && defined(__x86_64__)
#define cpuid(func, a, b, c, d) \
__asm__ __volatile__ ( \
" pushq %%rbx \n" \