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Seth Brenith authored
Sometimes CSA code carefully constructs a mask to check several bitfields at once. Thus far, such a check has been very awkward to write in Torque. This change adds a way to do so, using the non-short-circuiting binary `&` operator. So now you can write an expression that depends on several bitfields from a bitfield struct, like `x.a == 5 & x.b & !x.c & x.d == 2` (assuming b is a one-bit value), and it will be reduced to a single mask and equality check. To demonstrate a usage of this new reduction, this change ports the trivial macro IsSimpleObjectMap to Torque. I manually verified that the generated code for the builtin SetDataProperties, which uses that macro, is unchanged. Bug: v8:7793 Change-Id: I4a23e0005d738a6699ea0f2a63f9fd67b01e7026 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2183276 Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> Reviewed-by: Tobias Tebbi <tebbi@chromium.org> Cr-Commit-Position: refs/heads/master@{#67948}
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test-torque.tq |