8c2ab1d04f
S-register operand used in VCVTDS instructions cannot be allocated to an arbitrary Q-register and needs to be constrained (otherwise an invalid instruction is generated). TEST=runtime/tests/vm/dart/regress_42067_test Fixes https://github.com/dart-lang/sdk/issues/42067 Change-Id: I46b5ff3c75a50361eccebb1c74878bfb3c35d301 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/178162 Reviewed-by: Ryan Macnak <rmacnak@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>