libwebp: update to 0.5.0

third_party/libwebp/dsp/cpu.c

Index: third_party/libwebp/dsp/cpu.c
diff --git a/third_party/libwebp/dsp/cpu.c b/third_party/libwebp/dsp/cpu.c
index ef04a75a08f8999c58c35193f2148369809fb98b..8844cb406415fb3d0d994e5918e140410f3f06a9 100644
--- a/third_party/libwebp/dsp/cpu.c
+++ b/third_party/libwebp/dsp/cpu.c
@@ -13,7 +13,7 @@
 
 #include "./dsp.h"
 
-#if defined(__ANDROID__)
+#if defined(WEBP_ANDROID_NEON)
 #include <cpu-features.h>
 #endif
 
@@ -31,6 +31,18 @@ static WEBP_INLINE void GetCPUInfo(int cpu_info[4], int info_type) {
     : "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
     : "a"(info_type), "c"(0));
 }
+#elif defined(__x86_64__) && \
+      (defined(__code_model_medium__) || defined(__code_model_large__)) && \
+      defined(__PIC__)
+static WEBP_INLINE void GetCPUInfo(int cpu_info[4], int info_type) {
+  __asm__ volatile (
+    "xchg{q}\t{%%rbx}, %q1\n"
+    "cpuid\n"
+    "xchg{q}\t{%%rbx}, %q1\n"
+    : "=a"(cpu_info[0]), "=&r"(cpu_info[1]), "=c"(cpu_info[2]),
+      "=d"(cpu_info[3])
+    : "a"(info_type), "c"(0));
+}
 #elif defined(__i386__) || defined(__x86_64__)
 static WEBP_INLINE void GetCPUInfo(int cpu_info[4], int info_type) {
   __asm__ volatile (
@@ -79,7 +91,16 @@ static WEBP_INLINE uint64_t xgetbv(void) {
 
 #if defined(__i386__) || defined(__x86_64__) || defined(WEBP_MSC_SSE2)
 static int x86CPUInfo(CPUFeature feature) {
+  int max_cpuid_value;
   int cpu_info[4];
+
+  // get the highest feature value cpuid supports
+  GetCPUInfo(cpu_info, 0);
+  max_cpuid_value = cpu_info[0];
+  if (max_cpuid_value < 1) {
+    return 0;
+  }
+
   GetCPUInfo(cpu_info, 1);
   if (feature == kSSE2) {
     return 0 != (cpu_info[3] & 0x04000000);
@@ -87,6 +108,9 @@ static int x86CPUInfo(CPUFeature feature) {
   if (feature == kSSE3) {
     return 0 != (cpu_info[2] & 0x00000001);
   }
+  if (feature == kSSE4_1) {
+    return 0 != (cpu_info[2] & 0x00080000);
+  }
   if (feature == kAVX) {
     // bits 27 (OSXSAVE) & 28 (256-bit AVX)
     if ((cpu_info[2] & 0x18000000) == 0x18000000) {
@@ -95,7 +119,7 @@ static int x86CPUInfo(CPUFeature feature) {
     }
   }
   if (feature == kAVX2) {
-    if (x86CPUInfo(kAVX)) {
+    if (x86CPUInfo(kAVX) && max_cpuid_value >= 7) {
       GetCPUInfo(cpu_info, 7);
       return ((cpu_info[1] & 0x00000020) == 0x00000020);
     }
@@ -122,10 +146,14 @@ static int armCPUInfo(CPUFeature feature) {
   return 1;
 }
 VP8CPUInfo VP8GetCPUInfo = armCPUInfo;
-#elif defined(WEBP_USE_MIPS32)
+#elif defined(WEBP_USE_MIPS32) || defined(WEBP_USE_MIPS_DSP_R2)
 static int mipsCPUInfo(CPUFeature feature) {
-  (void)feature;
-  return 1;
+  if ((feature == kMIPS32) || (feature == kMIPSdspR2)) {
+    return 1;
+  } else {
+    return 0;
+  }
+
 }
 VP8CPUInfo VP8GetCPUInfo = mipsCPUInfo;
 #else