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shader: count one SGPR for lane reads and wave32 lane masks in call targets

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Co-authored-by: Ali Almohaya <AliAlmohaya@gmail.com>
Co-authored-by: Senaxx <michelbeld@gmail.com>
Co-authored-by: Mac <me@itsmemac.com>
This commit is contained in:
nmzik
2026-10-25 04:31:34 +01:00
parent 153dadd0b3
commit 7524e8f79e
5 changed files with 33 additions and 12 deletions
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tests/shaderCfgTests.cpp
+12
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@@ -11024,6 +11024,18 @@ void TestMemoryFedScalarLeafCall() {
ExpectFatal([&] { (void)PrepareShaderSource(multiple, options); },
"a native return pair was accepted as a later call target");
#endif
// A lane read and a wave32 lane mask write one SGPR, so neither s13 writer defines s14.
for (const auto& [wave_size, writer] : {std::pair{64u, 0x360u}, std::pair{32u, 0xc2u}}) {
const uint32_t neighbor[] = {EncodeVop3Word0(writer, 13), EncodeVop3Word1(256, 128, 0),
EncodeSop1(0x21, 14, 14), EncodeSopp(0x01)};
auto neighbor_options = options;
neighbor_options.wave_size = wave_size;
const auto neighbor_source = PrepareShaderSource(neighbor, neighbor_options);
const auto* target = neighbor_source.calls.front().target[0].TryInstruction();
Check(target != nullptr && target->GetOpcode() == IR::ValueOpcode::GetUserData &&
IR::RegIndex(target->Arg(0).ScalarRegister()) == 14u,
"a single-SGPR vector write was taken as the next SGPR's call-target definition");
}
}
void TestNewShaderRecompilerSetpcBranch() {