Update r128.h to include latest fix for mingw-64 32 bit builds.

thirdparty/README.md

@@ -386,7 +386,7 @@ Collection of single-file libraries used in Godot components.
   * License: Apache 2.0
 - `r128.h`
   * Upstream: https://github.com/fahickman/r128
-  * Version: 1.4.3 (2019)
+  * Version: git (423f693617faafd01de21e92818add4208eb8bd1, 2020)
   * License: Public Domain
 - `smaz.{c,h}`
   * Upstream: https://github.com/antirez/smaz

thirdparty/misc/r128.h

@@ -665,7 +665,7 @@ static int r128__clz64(R128_U64 x)
 // 32*32->64
 static R128_U64 r128__umul64(R128_U32 a, R128_U32 b)
 {
-#  if defined(_M_IX86) && !defined(R128_STDC_ONLY)
+#  if defined(_M_IX86) && !defined(R128_STDC_ONLY) && !defined(__MINGW32__)
    return __emulu(a, b);
 #  elif defined(_M_ARM) && !defined(R128_STDC_ONLY)
    return _arm_umull(a, b);
@@ -680,7 +680,7 @@ static R128_U32 r128__udiv64(R128_U32 nlo, R128_U32 nhi, R128_U32 d, R128_U32 *r
 #  if defined(_M_IX86) && (_MSC_VER >= 1920) && !defined(R128_STDC_ONLY)
    unsigned __int64 n = ((unsigned __int64)nhi << 32) | nlo;
    return _udiv64(n, d, rem);
-#  elif defined(_M_IX86) && !defined(R128_STDC_ONLY)
+#  elif defined(_M_IX86) && !defined(R128_STDC_ONLY) && !defined(__MINGW32__)
    __asm {
       mov eax, nlo
       mov edx, nhi
@@ -795,7 +795,7 @@ static void r128__umul128(R128 *dst, R128_U64 a, R128_U64 b)
 }
 
 // 128/64->64
-#if defined(_M_X64) && (_MSC_VER < 1920) && !defined(R128_STDC_ONLY)
+#if defined(_M_X64) && (_MSC_VER < 1920) && !defined(R128_STDC_ONLY) && !defined(__MINGW32__)
 // MSVC x64 provides neither inline assembly nor (pre-2019) a div intrinsic, so we do fake
 // "inline assembly" to avoid long division or outline assembly.
 #pragma code_seg(".text")
@@ -810,7 +810,7 @@ static const r128__udiv128Proc r128__udiv128 = (r128__udiv128Proc)(void*)r128__u
 #else
 static R128_U64 r128__udiv128(R128_U64 nlo, R128_U64 nhi, R128_U64 d, R128_U64 *rem)
 {
-#if defined(_M_X64) && !defined(R128_STDC_ONLY)
+#if defined(_M_X64) && !defined(R128_STDC_ONLY) && !defined(__MINGW32__)
    return _udiv128(nhi, nlo, d, rem);
 #elif defined(__x86_64__) && !defined(R128_STDC_ONLY)
    R128_U64 q, r;
@@ -1602,7 +1602,7 @@ void r128Shl(R128 *dst, const R128 *src, int amount)
    R128_ASSERT(dst != NULL);
    R128_ASSERT(src != NULL);
 
-#if defined(_M_IX86) && !defined(R128_STDC_ONLY)
+#if defined(_M_IX86) && !defined(R128_STDC_ONLY) && !defined(__MINGW32__)
    __asm {
       // load src
       mov edx, dword ptr[src]
@@ -1664,7 +1664,7 @@ void r128Shr(R128 *dst, const R128 *src, int amount)
    R128_ASSERT(dst != NULL);
    R128_ASSERT(src != NULL);
 
-#if defined(_M_IX86) && !defined(R128_STDC_ONLY)
+#if defined(_M_IX86) && !defined(R128_STDC_ONLY) && !defined(__MINGW32__)
    __asm {
       // load src
       mov edx, dword ptr[src]
@@ -1726,7 +1726,7 @@ void r128Sar(R128 *dst, const R128 *src, int amount)
    R128_ASSERT(dst != NULL);
    R128_ASSERT(src != NULL);
 
-#if defined(_M_IX86) && !defined(R128_STDC_ONLY)
+#if defined(_M_IX86) && !defined(R128_STDC_ONLY) && !defined(__MINGW32__)
    __asm {
       // load src
       mov edx, dword ptr[src]