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Revert "[vm] Switch datastream Write/WriteUnsigned to (S)LEB128."

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This reverts commit 80102c981b.

Reason for revert: b/186359854

Original change's description:
> [vm] Switch datastream Write/WriteUnsigned to (S)LEB128.
>
> This reduces the number of variable-length integer encodings in our
> database from 2 to 1, and chooses the more standard one.
>
> TEST=Existing tests, in particular any that involve snapshots.
>
> Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-precomp-ubsan-linux-release-x64-try,vm-kernel-precomp-tsan-linux-release-x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-nnbd-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-simarm64c-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try
> Change-Id: Ia700158ac873ad32ac28c1027a669895961bc715
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196321
> Commit-Queue: Tess Strickland <sstrickl@google.com>
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Reviewed-by: Martin Kustermann <kustermann@google.com>

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: Idf32bdd879cf8bb7407f6dae764312140ad6eeb2
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-precomp-ubsan-linux-release-x64-try,vm-kernel-precomp-tsan-linux-release-x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-nnbd-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-simarm64c-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196920
Reviewed-by: Ivan Inozemtsev <iinozemtsev@google.com>
Commit-Queue: Ivan Inozemtsev <iinozemtsev@google.com>
This commit is contained in:
Ivan Inozemtsev
2021-04-26 07:52:47 +00:00
committed by commit-bot@chromium.org
parent 50de84a3fb
commit a5ff656da1
14 changed files with 251 additions and 187 deletions
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runtime/vm/elf.cc
+2 -2
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@@ -1106,8 +1106,8 @@ class DwarfElfStream : public DwarfWriteStream {
stream_(ASSERT_NOTNULL(stream)),
table_(table) {}
void sleb128(intptr_t value) { stream_->Write(value); }
void uleb128(uintptr_t value) { stream_->WriteUnsigned(value); }
void sleb128(intptr_t value) { stream_->WriteSLEB128(value); }
void uleb128(uintptr_t value) { stream_->WriteLEB128(value); }
void u1(uint8_t value) { stream_->WriteByte(value); }
void u2(uint16_t value) { stream_->WriteFixed(value); }
void u4(uint32_t value) { stream_->WriteFixed(value); }