tree 394dc887c3c01f8f390dad366acab70c2f54fabb
parent 0bf8d38b3dbf498ad2e0d28116b673b9cb6d9c2f
author Alexander Markov <alexmarkov@google.com> 1610146823 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1610146823 +0000

[vm/compiler/arm] Fix register constraint for Float32x4ToFloat64x2

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>