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shader: specialize bounded pointer and packed image tables

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This commit is contained in:
nmzik
2026-10-13 01:12:19 +02:00
parent c9ec82e32e
commit 1fa79d5cac
5 changed files with 219 additions and 24 deletions
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src/graphics/shader/recompiler/ir/passes/ConstantPropagation.cpp
+14 -2
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@@ -604,8 +604,20 @@ void FoldInstruction(Block& block, Block::iterator instruction,
});
return;
case ValueOpcode::BitwiseAnd32:
if (!FoldU32(inst, [](uint32_t a, uint32_t b) { return a & b; })) {
ReplaceBinaryIdentity(inst, Type::U32, 0xffffffffu);
if (FoldU32(inst, [](uint32_t a, uint32_t b) { return a & b; }) ||
ReplaceBinaryIdentity(inst, Type::U32, UINT32_MAX)) return;
for (uint32_t arm = 0; arm < 2u; ++arm) {
const auto mask = Arg(inst, arm);
const auto* shifted = Arg(inst, arm ^ 1u).TryInstruction();
if (!IsImmediate(mask, Type::U32) || shifted == nullptr ||
shifted->GetOpcode() != ValueOpcode::ShiftLeftLogical32 || !HasOneUse(*shifted)) continue;
const auto shift = Arg(*shifted, 1);
if (!IsImmediate(shift, Type::U32) || shift.U32() >= 32u) continue;
const auto masked = worklist.Prepend(block, instruction, ValueOpcode::BitwiseAnd32,
{Arg(*shifted, 0), Value(mask.U32() >> shift.U32())});
Replace(inst, Value(&*worklist.Prepend(block, instruction, ValueOpcode::ShiftLeftLogical32,
{Value(&*masked), shift})));
return;
}
return;
case ValueOpcode::BitwiseAnd64: