[abi] Added more functionality to ujit

* Renamed round to round_even
  * Added round_half_up intrinsic
  * Added floating-point mod
  * Added a scalar version of floating-point abs and neg
  * Added a behavior enum to specify how float to int conversion
    handles out-of-range and NaN cases
  * Updated some APX stuff in instruction database

testing/tests/asmjit_test_unicompiler_sse2.cpp

@@ -0,0 +1,72 @@
+// This file is part of AsmJit project <https://asmjit.com>
+//
+// See <asmjit/core.h> or LICENSE.md for license and copyright information
+// SPDX-License-Identifier: Zlib
+
+#include <asmjit/ujit.h>
+
+#if defined(ASMJIT_UJIT_X86)
+
+#if defined(_MSC_VER)
+  #include <intrin.h>
+#else
+  #include <emmintrin.h>
+#endif
+
+namespace UniCompilerTests {
+
+// A reference implementation of MUL+ADD without the use of FMA. This has to be provided otherwise the
+// compiler may use FPU registers in 32-bit x86 case, which would make the result different than when
+// compiled by JIT compiler that would use XMM registers (32/64-bit SSE/AVX operations).
+
+float fadd(float a, float b) noexcept {
+  return _mm_cvtss_f32(_mm_add_ss(_mm_set1_ps(a), _mm_set1_ps(b)));
+}
+
+float fsub(float a, float b) noexcept {
+  return _mm_cvtss_f32(_mm_sub_ss(_mm_set1_ps(a), _mm_set1_ps(b)));
+}
+
+float fmul(float a, float b) noexcept {
+  return _mm_cvtss_f32(_mm_mul_ss(_mm_set1_ps(a), _mm_set1_ps(b)));
+}
+
+float fdiv(float a, float b) noexcept {
+  return _mm_cvtss_f32(_mm_div_ss(_mm_set1_ps(a), _mm_set1_ps(b)));
+}
+
+float fsqrt(float a) noexcept {
+  return _mm_cvtss_f32(_mm_sqrt_ss(_mm_set1_ps(a)));
+}
+
+float fmadd_nofma_ref(float a, float b, float c) noexcept {
+  return _mm_cvtss_f32(_mm_add_ss(_mm_mul_ss(_mm_set1_ps(a), _mm_set1_ps(b)), _mm_set1_ps(c)));
+}
+
+double fadd(double a, double b) noexcept {
+  return _mm_cvtsd_f64(_mm_add_sd(_mm_set1_pd(a), _mm_set1_pd(b)));
+}
+
+double fsub(double a, double b) noexcept {
+  return _mm_cvtsd_f64(_mm_sub_sd(_mm_set1_pd(a), _mm_set1_pd(b)));
+}
+
+double fmul(double a, double b) noexcept {
+  return _mm_cvtsd_f64(_mm_mul_sd(_mm_set1_pd(a), _mm_set1_pd(b)));
+}
+
+double fdiv(double a, double b) noexcept {
+  return _mm_cvtsd_f64(_mm_div_sd(_mm_set1_pd(a), _mm_set1_pd(b)));
+}
+
+double fsqrt(double a) noexcept {
+  return _mm_cvtsd_f64(_mm_sqrt_sd(_mm_setzero_pd(), _mm_set1_pd(a)));
+}
+
+double fmadd_nofma_ref(double a, double b, double c) noexcept {
+  return _mm_cvtsd_f64(_mm_add_sd(_mm_mul_sd(_mm_set1_pd(a), _mm_set1_pd(b)), _mm_set1_pd(c)));
+}
+
+} // {UniCompilerTests}
+
+#endif // ASMJIT_UJIT_X86