[wasm] Fix Vector128 SIMD fmin and fmax (#93556)

* [wasm] Fix SIMD fmin and fmax

So that it propagates NaNs

* Revert "[wasm] Disable `TensorPrimitivesTests.ConvertToHalf_SpecialValues` (#92953)"

This reverts commit 01cab29.

Author: radekdoulik

src/libraries/System.Numerics.Tensors/tests/TensorPrimitivesTests.netcore.cs

@@ -37,7 +37,6 @@ public static void ConvertToHalf(int tensorLength)
         }
 
         [Theory]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/92885", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsMonoAOT))]
         [MemberData(nameof(TensorLengths))]
         public static void ConvertToHalf_SpecialValues(int tensorLength)
         {

src/mono/mono/mini/llvm-intrinsics.h

@@ -289,6 +289,8 @@ INTRINS_OVR_2_ARG(WASM_NARROW_UNSIGNED_V16, wasm_narrow_unsigned, Wasm, sse_i1_t
 INTRINS_OVR_2_ARG(WASM_NARROW_UNSIGNED_V8, wasm_narrow_unsigned, Wasm, sse_i2_t, sse_i4_t)
 INTRINS_OVR_2_ARG(WASM_CONV_R8_TO_I4, fptosi_sat, Generic, v64_i4_t, v128_r8_t)
 INTRINS_OVR_2_ARG(WASM_CONV_R8_TO_U4, fptoui_sat, Generic, v64_i4_t, v128_r8_t)
+INTRINS_OVR_TAG(WASM_FMAX, maximum, Generic, V128 | R4 | R8)
+INTRINS_OVR_TAG(WASM_FMIN, minimum, Generic, V128 | R4 | R8)
 INTRINS_OVR_TAG(WASM_PMAX, wasm_pmax, Wasm, V128 | R4 | R8)
 INTRINS_OVR_TAG(WASM_PMIN, wasm_pmin, Wasm, V128 | R4 | R8)
 INTRINS_OVR(WASM_PMAX_V4, fabs, Generic, sse_r4_t)

src/mono/mono/mini/mini-llvm.c

@@ -8276,9 +8276,13 @@ MONO_RESTORE_WARNING
 					result = fcmp_and_select (builder, ins, l, r);
 				}
 
-#elif defined(TARGET_ARM64)
+#elif defined(TARGET_ARM64) || defined(TARGET_WASM)
 				LLVMValueRef min_max_args [] = { l, r };
+#ifdef TARGET_WASM
+				IntrinsicId iid = ins->inst_c0 == OP_FMAX ? INTRINS_WASM_FMAX : INTRINS_WASM_FMIN;
+#else
 				IntrinsicId iid = ins->inst_c0 == OP_FMAX ? INTRINS_AARCH64_ADV_SIMD_FMAX : INTRINS_AARCH64_ADV_SIMD_FMIN;
+#endif
 				llvm_ovr_tag_t ovr_tag = ovr_tag_from_mono_vector_class (ins->klass);
 				result = call_overloaded_intrins (ctx, iid, ovr_tag, min_max_args, "");
 #else