Move type initialization earlier and fix cast issue on MSVC

snickolls-arm · snickolls-arm · commit 9ba8b1ab8d0c · 2025-11-06T11:14:02.000Z
diff --git a/src/coreclr/jit/compiler.cpp b/src/coreclr/jit/compiler.cpp
@@ -6809,6 +6809,14 @@ int Compiler::compCompileHelper(CORINFO_MODULE_HANDLE classPtr,
             break;
     }
 
+#if defined(FEATURE_SIMD) && defined(TARGET_ARM64)
+    // Initialize the size of Vector<T> from the EE.
+    _initGenTypeSizes[TYP_SIMDSV] = (BYTE)getVectorTByteLength();
+    _initGenTypeSizes[TYP_MASK]   = (BYTE)getMaskByteLength();
+    assert(genTypeSize(TYP_SIMDSV) >= 16);
+    assert(genTypeSize(TYP_MASK) >= 2);
+#endif
+
     info.compRetType = JITtype2varType(methodInfo->args.retType);
     if (info.compRetType == TYP_STRUCT)
     {

Original file line number	Diff line number	Diff line change
`@@ -6809,6 +6809,14 @@ int Compiler::compCompileHelper(CORINFO_MODULE_HANDLE classPtr,`
`6809`	`6809`	`break;`
`6810`	`6810`	`}`
`6811`	`6811`
	`6812`	`+#if defined(FEATURE_SIMD) && defined(TARGET_ARM64)`
	`6813`	`+ // Initialize the size of Vector<T> from the EE.`
	`6814`	`+ _initGenTypeSizes[TYP_SIMDSV] = (BYTE)getVectorTByteLength();`
	`6815`	`+ _initGenTypeSizes[TYP_MASK] = (BYTE)getMaskByteLength();`
	`6816`	`+ assert(genTypeSize(TYP_SIMDSV) >= 16);`
	`6817`	`+ assert(genTypeSize(TYP_MASK) >= 2);`
	`6818`	`+#endif`
	`6819`	`+`
`6812`	`6820`	`info.compRetType = JITtype2varType(methodInfo->args.retType);`
`6813`	`6821`	`if (info.compRetType == TYP_STRUCT)`
`6814`	`6822`	`{`