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Daniel Golle
df0b899123
Update WPEWebKit to the 2.52 stable major release branch. Includes a pending patchset to get WASM BBQJIT working on RISCV64, upstream PR https://github.com/WebKit/WebKit/pull/65621 Alltogether this brings acceptable performance (even with LLVMPipe Mesa software renderer) on RISCV64. Link: https://wpewebkit.org/release/wpewebkit-2.52.0.html Link: https://wpewebkit.org/release/wpewebkit-2.52.1.html Link: https://wpewebkit.org/release/wpewebkit-2.52.2.html Link: https://wpewebkit.org/release/wpewebkit-2.52.3.html Signed-off-by: Daniel Golle <daniel@makrotopia.org>
36 lines
1.5 KiB
Diff
36 lines
1.5 KiB
Diff
From: Daniel Golle <daniel@makrotopia.org>
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Subject: [PATCH] JavaScriptCore: do not force useBBQJIT() off on RISCV64
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Options.cpp force-disables a number of JIT-tier and wasm options on any
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CPU other than X86_64 / ARM64. For RISCV64 these defaults remain correct
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- there is no concurrent GC, no wasm SIMD codegen, and no IPInt tier
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yet - except for useBBQJIT(): RISCV64 enables WEBASSEMBLY_BBQJIT in
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PlatformEnable.h and BBQJIT is the only wasm execution tier available
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on this architecture.
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Add RISCV64 to the carve-out so useBBQJIT() retains its (true) default,
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matching what is already done for ARM_THUMB2.
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With ARM_THUMB2 and RISCV64 carved out, the resulting wasm tier matrix
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on RISCV64 is:
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useWasmIPInt = false (no IPInt port)
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useWasmSIMD = false (no SIMD codegen)
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useBBQJIT = true (this change)
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useOMGJIT = false (no OMGJIT port)
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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--- a/Source/JavaScriptCore/runtime/Options.cpp
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+++ b/Source/JavaScriptCore/runtime/Options.cpp
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@@ -796,7 +796,10 @@ void Options::notifyOptionsChanged()
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Options::forceUnlinkedDFG() = false;
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Options::useWasmSIMD() = false;
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Options::useWasmIPInt() = false;
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-#if !CPU(ARM_THUMB2)
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+#if !CPU(ARM_THUMB2) && !CPU(RISCV64)
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+ // RISCV64 has BBQJIT (WEBASSEMBLY_BBQJIT enabled in PlatformEnable.h);
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+ // wasm SIMD and IPInt are still off above, so BBQJIT is the only wasm
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+ // tier on this architecture.
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Options::useBBQJIT() = false;
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#endif
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#endif
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