JIT: Don't allow broadcast lowering to remove cast from decomposed long (#116002)

saucecontrol · web-flow · commit b04d40e55b3f · 2025-05-27T10:35:42.000+02:00
diff --git a/src/coreclr/jit/lowerxarch.cpp b/src/coreclr/jit/lowerxarch.cpp
@@ -9815,7 +9815,7 @@ void Lowering::ContainCheckHWIntrinsic(GenTreeHWIntrinsic* node)
                                 {
                                     GenTreeCast* cast = op1->AsCast();
                                     if (!varTypeIsFloating(cast->CastToType()) &&
-                                        !varTypeIsFloating(cast->CastFromType()) &&
+                                        !varTypeIsFloating(cast->CastFromType()) && !cast->CastOp()->OperIsLong() &&
                                         (genTypeSize(cast->CastToType()) >= genTypeSize(simdBaseType)) &&
                                         (genTypeSize(cast->CastFromType()) >= genTypeSize(simdBaseType)))
                                     {

Original file line number	Diff line number	Diff line change
`@@ -9815,7 +9815,7 @@ void Lowering::ContainCheckHWIntrinsic(GenTreeHWIntrinsic* node)`
`9815`	`9815`	`{`
`9816`	`9816`	`GenTreeCast* cast = op1->AsCast();`
`9817`	`9817`	`if (!varTypeIsFloating(cast->CastToType()) &&`
`9818`		`- !varTypeIsFloating(cast->CastFromType()) &&`
	`9818`	`+ !varTypeIsFloating(cast->CastFromType()) && !cast->CastOp()->OperIsLong() &&`
`9819`	`9819`	`(genTypeSize(cast->CastToType()) >= genTypeSize(simdBaseType)) &&`
`9820`	`9820`	`(genTypeSize(cast->CastFromType()) >= genTypeSize(simdBaseType)))`
`9821`	`9821`	`{`