| commit | e7a2fbe692a761ca2dae2a2643bbcce4b58089ad | [log] [tgz] |
|---|---|---|
| author | Tess Strickland <sstrickl@google.com> | Tue Nov 17 15:09:47 2020 +0000 |
| committer | commit-bot@chromium.org <commit-bot@chromium.org> | Tue Nov 17 15:09:47 2020 +0000 |
| tree | 14c27182d339ad9b380883ae8ee8fc90c66f0e16 | |
| parent | 00f9a25c2674e2ec35d10c6cc4aa3bf76d32fd07 [diff] |
[vm/compiler] Unify TTS implementations across architectures. The only architecture-specific part of type testing stubs (TTS) is which registers get saved/restored across SubtypeTestCache stub calls in the slow TTS implementation, which is now a register mask constant in the TypeTestABI struct. This CL also: * Creates a single definition of OperandSize in assembler_base.h. Moves OperandSize into the compiler namespace. assembler_base.h. Renames constants common to all architectures to neutral names (e.g., kWord => kFourBytes), since "word" has different meanings across architectures. * Creates a new JumpDistance enum for kNearJump/kFarJump in AssemblerBase and replace existing bool uses with the constants. * Adds JumpDistance arguments to some of the generalized Assembler methods so they aren't forced to use far jumps on IA32/X64. These added JumpDistance arguments are ignored on ARM architectures. * Adds a new generalized Assembler::LoadIndexedPayload method for loading indexed objects out of post-header variable-length payloads. * Moved the OperandSize argument for LoadForOffset and similar methods on 32-bit ARM from being the first argument to being the second to last argument just to match other architectures, and to allow it to have a default value of kFourBytes. TEST=Run on trybots of all architectures. Cq-Include-Trybots: luci.dart.try:vm-kernel-linux-debug-x64-try,vm-kernel-nnbd-linux-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-nnbd-linux-debug-ia32-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-nnbd-linux-debug-simarm_x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-nnbd-linux-release-simarm-try,vm-kernel-nnbd-linux-release-simarm64-try,vm-kernel-precomp-linux-release-simarm-try,vm-kernel-precomp-linux-release-simarm64-try,vm-kernel-precomp-nnbd-linux-release-simarm64-try Change-Id: Ia930613e96db4d1ab324c5a355dca8994d2a77f0 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/172160 Commit-Queue: Tess Strickland <sstrickl@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
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