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dsp.h: allow config.h to override MSVC SIMD autodetection

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this fixes builds with cmake targeting visual studio that set
-DWEBP_ENABLE_SIMD=0

BUG=webp:478

Change-Id: I21b61b112c79ff9cbab9e4502a25d3f1fa096c8b
This commit is contained in:
James Zern 2020-12-03 10:22:04 -08:00
parent fef789f366
commit ae54553461
2 changed files with 15 additions and 4 deletions
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14
src/dsp/cpu.c
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@ -55,12 +55,18 @@ static WEBP_INLINE void GetCPUInfo(int cpu_info[4], int info_type) {
: "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
: "a"(info_type), "c"(0));
}
#elif (defined(_M_X64) || defined(_M_IX86)) && \
defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 150030729 // >= VS2008 SP1
#elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
#if defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 150030729 // >= VS2008 SP1
#include <intrin.h>
#define GetCPUInfo(info, type) __cpuidex(info, type, 0) // set ecx=0
#elif defined(WEBP_MSC_SSE2)
#define WEBP_HAVE_MSC_CPUID
#elif _MSC_VER > 1310
#include <intrin.h>
#define GetCPUInfo __cpuid
#define WEBP_HAVE_MSC_CPUID
#endif
#endif
// NaCl has no support for xgetbv or the raw opcode.
@ -94,7 +100,7 @@ static WEBP_INLINE uint64_t xgetbv(void) {
#define xgetbv() 0U // no AVX for older x64 or unrecognized toolchains.
#endif
#if defined(__i386__) || defined(__x86_64__) || defined(WEBP_MSC_SSE2)
#if defined(__i386__) || defined(__x86_64__) || defined(WEBP_HAVE_MSC_CPUID)
// helper function for run-time detection of slow SSSE3 platforms
static int CheckSlowModel(int info) {

5
src/dsp/dsp.h
View File

@ -51,6 +51,7 @@ extern "C" {
# define __has_builtin(x) 0
#endif
#if !defined(HAVE_CONFIG_H)
#if defined(_MSC_VER) && _MSC_VER > 1310 && \
(defined(_M_X64) || defined(_M_IX86))
#define WEBP_MSC_SSE2 // Visual C++ SSE2 targets
@ -60,6 +61,7 @@ extern "C" {
(defined(_M_X64) || defined(_M_IX86))
#define WEBP_MSC_SSE41 // Visual C++ SSE4.1 targets
#endif
#endif
// WEBP_HAVE_* are used to indicate the presence of the instruction set in dsp
// files without intrinsics, allowing the corresponding Init() to be called.
@ -73,6 +75,9 @@ extern "C" {
#define WEBP_USE_SSE41
#endif
#undef WEBP_MSC_SSE41
#undef WEBP_MSC_SSE2
// The intrinsics currently cause compiler errors with arm-nacl-gcc and the
// inline assembly would need to be modified for use with Native Client.
#if (defined(__ARM_NEON__) || \