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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>
22 lines
1.1 KiB
Diff
22 lines
1.1 KiB
Diff
--- a/Source/JavaScriptCore/wasm/WasmOperations.cpp
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+++ b/Source/JavaScriptCore/wasm/WasmOperations.cpp
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@@ -135,8 +135,17 @@ JSC_DEFINE_JIT_OPERATION(operationJSToWa
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dataLogLnIf(WasmOperationsInternal::verbose, "* Register Arg ", i, " ", dst);
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- if (type.isI32() || type.isF32())
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+ if (type.isI32())
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value = static_cast<uint64_t>(static_cast<uint32_t>(value));
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+ else if (type.isF32()) {
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+ // Pack as NaN-boxed single (high 32 = 0xFFFFFFFF) so that
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+ // the shared trampoline's loadDouble into the FPR yields a
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+ // properly NaN-boxed single. Otherwise on architectures
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+ // that enforce NaN-boxing for single-precision ops
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+ // (RV64GC), the wasm body's subsequent flw/fsw on the f-arg
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+ // sees the canonical NaN instead of the actual f32 value.
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+ value = static_cast<uint64_t>(static_cast<uint32_t>(value)) | 0xFFFFFFFF00000000ULL;
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+ }
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*access.operator()<uint64_t>(registerSpace, dst) = value;
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}
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}
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