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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
1.5 KiB
Diff
34 lines
1.5 KiB
Diff
From 5a93e9a6c82d93970742972e0cf68ef62cb4f313 Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Tue, 26 May 2026 13:12:29 +0100
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Subject: [PATCH] ANGLE: skip excess-precision-sensitive roundToNearest
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static_asserts on x87
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On 32-bit x86 targets with x87 FP (FLT_EVAL_METHOD == 2), constexpr
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float/double arithmetic is performed at 80-bit extended precision, so
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0.49999997f + 0.5f compares to long-double 0.99999996... != 1.0 and the
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static_assert fails. The runtime bias trick remains correct (the result
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is still cast back to float and rounded). Skip the compile-time checks
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when __FLT_EVAL_METHOD__ != 0.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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Source/ThirdParty/ANGLE/src/common/mathutil.h | 2 ++
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1 file changed, 2 insertions(+)
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--- a/Source/ThirdParty/ANGLE/src/common/mathutil.h
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+++ b/Source/ThirdParty/ANGLE/src/common/mathutil.h
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@@ -606,10 +606,12 @@ inline R roundToNearest(T input)
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// On armv8, this expression is compiled to a dedicated round-to-nearest instruction
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return static_cast<R>(std::round(input));
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#else
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+#if !defined(__FLT_EVAL_METHOD__) || __FLT_EVAL_METHOD__ == 0
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static_assert(0.49999997f < 0.5f);
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static_assert(0.49999997f + 0.5f == 1.0f);
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static_assert(0.49999999999999994 < 0.5);
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static_assert(0.49999999999999994 + 0.5 == 1.0);
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+#endif
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constexpr T bias = sizeof(T) == 8 ? 0.49999999999999994 : 0.49999997f;
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return static_cast<R>(input + (std::is_signed<R>::value ? std::copysign(bias, input) : bias));
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#endif
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