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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>
34 lines
1.3 KiB
Diff
34 lines
1.3 KiB
Diff
From: Daniel Golle <daniel@makrotopia.org>
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Subject: [PATCH] JavaScriptCore: LLInt asm: iterate all 8 wasm GPR args on RISCV64
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The forEachWasmArgumentGPR macro in InPlaceInterpreter.asm (used by
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js_to_wasm_wrapper_entry, the LLInt counterpart of the C++ JIT shared
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JS-to-wasm trampoline, and other wasm-arg shuffle macros) iterates 8
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GPRs only on ARM64; on JSVALUE64 it stops at wa5 to match X86_64's 6
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GPR args. RISC-V also has 8 GPR args (a0..a7), so the JSVALUE64 branch
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leaves wa6/wa7 unhandled.
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Symptom: any wasm function whose calling convention places i32/i64
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params in a6 or a7 sees garbage for those args on paths that route
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through this macro (e.g. js_to_wasm_wrapper_entry). Mirror the C++
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fix from patch 149 by adding an explicit RISCV64 branch with
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fn(6, wa6, wa7). The inner preserve/restore impl macros' JSVALUE64
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branch (storeq/loadq) already handles 64-bit GPRs correctly.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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--- a/Source/JavaScriptCore/llint/InPlaceInterpreter.asm
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+++ b/Source/JavaScriptCore/llint/InPlaceInterpreter.asm
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@@ -534,6 +534,11 @@ macro forEachWasmArgumentGPR(fn)
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fn(2, wa2, wa3)
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fn(4, wa4, wa5)
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fn(6, wa6, wa7)
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+ elsif RISCV64
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+ fn(0, wa0, wa1)
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+ fn(2, wa2, wa3)
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+ fn(4, wa4, wa5)
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+ fn(6, wa6, wa7)
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elsif JSVALUE64
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fn(0, wa0, wa1)
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fn(2, wa2, wa3)
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