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shader: bound table keys by an inclusive guard with a constant limit

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Claxten
2026-10-26 22:56:37 +01:00
committed by nmzik
parent f297c0bfe1
commit a3ac6d0d32
2 changed files with 84 additions and 0 deletions
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src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp
+4
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@@ -2038,6 +2038,10 @@ private:
EquivalentValue(m_program, test->Arg(0), value)) return test->Arg(1);
if ((positive ? op == ValueOpcode::UGreaterThan32 : op == ValueOpcode::ULessThanEqual32) &&
EquivalentValue(m_program, test->Arg(1), value)) return test->Arg(0);
uint32_t limit = 0;
if ((positive ? op == ValueOpcode::ULessThanEqual32 : op == ValueOpcode::UGreaterThan32) &&
ImmediateU32(test->Arg(1), limit) && limit != UINT32_MAX &&
EquivalentValue(m_program, test->Arg(0), value)) return Value(limit + 1u);
const auto* scan = value.Resolve().TryInstruction();
if (finite_bitscan && scan != nullptr && scan->GetOpcode() == ValueOpcode::FindILsb32 &&
(positive ? op == ValueOpcode::INotEqual32 : op == ValueOpcode::IEqual32)) {