TheRock/rocm-libraries/shared/stinkytofu/tests/unit/asm/HwInstDescTest.cpp

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#include <gtest/gtest.h>

#include <cstdint>

#include "stinkytofu/hardware/ArchHelper.hpp"
#include "stinkytofu/hardware/GfxIsa.hpp"
#include "stinkytofu/ir/asm/StinkyAsmIR.hpp"

using namespace stinkytofu;

class HwInstDescTest : public ::testing::Test {
   protected:
    GfxArchID arch;

    void SetUp() override {
        arch = getGfxArchID(12, 5, 0);
    }

    const HwInstDesc* getDescByMnemonic(const std::string& mnemonic) {
        uint16_t isaOp = getMnemonicToIsaOpcode(mnemonic, arch);
        if (isaOp == GFX::INVALID) return nullptr;
        return getMCIDByIsaOp(isaOp, arch);
    }
};

// ---------------------------------------------------------------------------
// VOP2: v_add_f32 — basic vector ALU, 32-bit encoding, promotable to VOP3
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, VOP2_VAddF32_Microcode) {
    auto* desc = getDescByMnemonic("v_add_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VOP2);
}

TEST_F(HwInstDescTest, VOP2_VAddF32_Unit) {
    auto* desc = getDescByMnemonic("v_add_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->unit, ExecUnit::VALU);
}

TEST_F(HwInstDescTest, VOP2_VAddF32_Flags) {
    auto* desc = getDescByMnemonic("v_add_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_VALU));
    EXPECT_TRUE(desc->has(IF_Commutative));
    EXPECT_FALSE(desc->has(IF_SALU));
}

TEST_F(HwInstDescTest, VOP2_VAddF32_OperandFields) {
    auto* desc = getDescByMnemonic("v_add_f32");
    ASSERT_NE(desc, nullptr);

    auto fields = desc->operandFields;
    ASSERT_EQ(fields.size(), 3u);

    // D0: {D0, vdst, vgpr, 32}
    EXPECT_TRUE(fields[0].isDest);
    EXPECT_EQ(fields[0].encodeField, EncodeField::vdst);
    EXPECT_EQ(fields[0].fieldType, FieldType::vgpr);
    EXPECT_EQ(fields[0].fieldSizeBits, 32u);

    // S0: {S0, src0, src, 32}
    EXPECT_FALSE(fields[1].isDest);
    EXPECT_EQ(fields[1].encodeField, EncodeField::src0);
    EXPECT_EQ(fields[1].fieldType, FieldType::src);
    EXPECT_EQ(fields[1].fieldSizeBits, 32u);

    // S1: {S1, vsrc1, vgpr, 32}
    EXPECT_FALSE(fields[2].isDest);
    EXPECT_EQ(fields[2].encodeField, EncodeField::vsrc1);
    EXPECT_EQ(fields[2].fieldType, FieldType::vgpr);
    EXPECT_EQ(fields[2].fieldSizeBits, 32u);
}

TEST_F(HwInstDescTest, VOP2_VAddF32_PromotedFormat) {
    auto* desc = getDescByMnemonic("v_add_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->promotedFormat, MicrocodeFormat::MC_VOP3);
}

TEST_F(HwInstDescTest, VOP2_VAddF32_PromotedFields) {
    auto* desc = getDescByMnemonic("v_add_f32");
    ASSERT_NE(desc, nullptr);

    auto pf = desc->promotedFields;
    ASSERT_EQ(pf.size(), 3u);

    // In promoted VOP3 encoding, S1 is relaxed from vgpr to src
    EXPECT_EQ(pf[2].encodeField, EncodeField::src1);
    EXPECT_EQ(pf[2].fieldType, FieldType::src);
}

// ---------------------------------------------------------------------------
// VOP3: v_fma_f32 — 64-bit encoding, no promotion
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, VOP3_VFmaF32) {
    auto* desc = getDescByMnemonic("v_fma_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VOP3);
    EXPECT_EQ(desc->unit, ExecUnit::VALU);
    EXPECT_TRUE(desc->has(IF_VALU));
    EXPECT_EQ(desc->promotedFormat, MicrocodeFormat::NONE);
}

// VOP3_2SRC_COMMUTATIVE -> VOP3_2SRC -> VOP3: format .encoding must merge full parent chain (64 b).
TEST_F(HwInstDescTest, VOP3_2SrcCommutative_Encoding64Bits) {
    for (const char* m : {"v_add_nc_i32", "v_mul_lo_u32"}) {
        auto* desc = getDescByMnemonic(m);
        ASSERT_NE(desc, nullptr) << m;
        EXPECT_EQ(desc->encoding, 64u) << m;
        EXPECT_TRUE(desc->has(IF_Commutative)) << m;
    }
}

// ---------------------------------------------------------------------------
// SOP2: s_add_u32 — scalar ALU, 32-bit encoding
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, SOP2_SAddU32) {
    auto* desc = getDescByMnemonic("s_add_u32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_SOP2);
    EXPECT_EQ(desc->unit, ExecUnit::SALU);
    EXPECT_TRUE(desc->has(IF_SALU));
    EXPECT_FALSE(desc->has(IF_VALU));

    auto fields = desc->operandFields;
    ASSERT_EQ(fields.size(), 3u);

    // D0: {D0, sdst, sdst, 32}
    EXPECT_TRUE(fields[0].isDest);
    EXPECT_EQ(fields[0].encodeField, EncodeField::sdst);
    EXPECT_EQ(fields[0].fieldType, FieldType::sdst);

    // S0: {S0, ssrc0, ssrc, 32}
    EXPECT_EQ(fields[1].encodeField, EncodeField::ssrc0);
    EXPECT_EQ(fields[1].fieldType, FieldType::ssrc);

    // S1: {S1, ssrc1, ssrc, 32}
    EXPECT_EQ(fields[2].encodeField, EncodeField::ssrc1);
    EXPECT_EQ(fields[2].fieldType, FieldType::ssrc);
}

// ---------------------------------------------------------------------------
// MUBUF_LOAD: buffer_load_b32 — buffer memory, 96-bit encoding
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, MUBUF_BufferLoadB32) {
    auto* desc = getDescByMnemonic("buffer_load_b32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VBUFFER);
    EXPECT_EQ(desc->unit, ExecUnit::BufferMemory);
    EXPECT_TRUE(desc->has(IF_MUBUFLoad));

    auto fields = desc->operandFields;
    ASSERT_EQ(fields.size(), 4u);

    // D0: {D0, vdata, vgpr, 32}
    EXPECT_TRUE(fields[0].isDest);
    EXPECT_EQ(fields[0].encodeField, EncodeField::vdata);
    EXPECT_EQ(fields[0].fieldType, FieldType::vgpr);
    EXPECT_EQ(fields[0].fieldSizeBits, 32u);

    // S1: {S1, rsrc, sreg, 128, RSRC}
    EXPECT_EQ(fields[2].encodeField, EncodeField::rsrc);
    EXPECT_EQ(fields[2].fieldType, FieldType::sreg);
    EXPECT_EQ(fields[2].fieldSizeBits, 128u);
}

// ---------------------------------------------------------------------------
// MUBUF_LOAD per-instruction override: buffer_load_b64 — D0 size 32 -> 64
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, MUBUF_BufferLoadB64_FieldOverride) {
    auto* desc = getDescByMnemonic("buffer_load_b64");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VBUFFER);

    auto fields = desc->operandFields;
    ASSERT_GE(fields.size(), 4u);

    // D0 size overridden from format default (32) to 64
    EXPECT_TRUE(fields[0].isDest);
    EXPECT_EQ(fields[0].encodeField, EncodeField::vdata);
    EXPECT_EQ(fields[0].fieldSizeBits, 64u);

    // S0 unchanged from format
    EXPECT_EQ(fields[1].encodeField, EncodeField::vaddr);
    EXPECT_EQ(fields[1].fieldSizeBits, 32u);
}

// ---------------------------------------------------------------------------
// FLAT_LOAD: flat_load_b32 — global memory, 96-bit encoding
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, FLAT_FlatLoadB32) {
    auto* desc = getDescByMnemonic("flat_load_b32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VFLAT);
    EXPECT_EQ(desc->unit, ExecUnit::GlobalMemory);
    EXPECT_TRUE(desc->has(IF_FLATLoad));
}

// ---------------------------------------------------------------------------
// DS: ds_load_b32 — LDS memory, 64-bit encoding
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, DS_DsLoadB32) {
    auto* desc = getDescByMnemonic("ds_load_b32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VDS);
    EXPECT_EQ(desc->unit, ExecUnit::LDS);
    EXPECT_TRUE(desc->has(IF_DSRead));
}

// ---------------------------------------------------------------------------
// SMEM: s_load_b32 — scalar memory, 64-bit encoding
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, SMRD_SLoadB32) {
    auto* desc = getDescByMnemonic("s_load_b32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_SMEM);
    EXPECT_EQ(desc->unit, ExecUnit::ScalarMemory);
    EXPECT_TRUE(desc->has(IF_SMemLoad));
}

// ---------------------------------------------------------------------------
// WMMA: v_wmma_f32_16x16x16_f16 — matrix unit, VOP3P encoding
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, WMMA_F32_16x16x16_F16) {
    auto* desc = getDescByMnemonic("v_wmma_f32_16x16x16_f16");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VOP3P);
    EXPECT_EQ(desc->unit, ExecUnit::MatrixUnit);
    EXPECT_TRUE(desc->has(IF_WMMA));

    auto fields = desc->operandFields;
    ASSERT_GE(fields.size(), 3u);

    // D0: 256-bit destination (8 VGPRs)
    EXPECT_TRUE(fields[0].isDest);
    EXPECT_EQ(fields[0].encodeField, EncodeField::vdst);
    EXPECT_EQ(fields[0].fieldSizeBits, 256u);
}

// ---------------------------------------------------------------------------
// VOP3P packed math: v_pk_*_f32 — must carry IF_VALU from the VOP3P format
// default. These instructions set no per-instruction IF_VALU (only
// IF_Commutative), so the flag comes solely from the format. InsertWaitAluPass
// relies on IF_VALU (isVectorALU/classifyEvent) to stamp packed-math VGPR
// writes on the va_vdst scoreboard; without it the following VMEM consumer
// would get no s_wait_alu.
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, VOP3P_VPkMulF32_IsVALU) {
    auto* desc = getDescByMnemonic("v_pk_mul_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VOP3P);
    EXPECT_EQ(desc->unit, ExecUnit::VALU);
    EXPECT_TRUE(desc->has(IF_VALU));
}

TEST_F(HwInstDescTest, VOP3P_VPkAddF32_IsVALU) {
    auto* desc = getDescByMnemonic("v_pk_add_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VOP3P);
    EXPECT_TRUE(desc->has(IF_VALU));
}

// ---------------------------------------------------------------------------
// SOPP_BRANCH: s_branch — branch unit, label operand
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, SOPP_SBranch) {
    auto* desc = getDescByMnemonic("s_branch");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_SOPP);
    EXPECT_EQ(desc->unit, ExecUnit::BranchUnit);
    EXPECT_TRUE(desc->has(IF_Branch));

    auto fields = desc->operandFields;
    ASSERT_EQ(fields.size(), 1u);
    EXPECT_EQ(fields[0].encodeField, EncodeField::simm16);
    EXPECT_EQ(fields[0].fieldType, FieldType::label);
}

// S_SWAPPC_B64: call site (LLVM-style IF_Call), not IF_Branch / IF_IndirectBranch.
TEST_F(HwInstDescTest, SOP1_SSwappcB64) {
    auto* desc = getDescByMnemonic("s_swappc_b64");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_SOP1);
    EXPECT_EQ(desc->unit, ExecUnit::SALU);
    EXPECT_TRUE(desc->has(IF_Call));
    EXPECT_TRUE(desc->has(IF_HasSideEffect));
    EXPECT_FALSE(desc->has(IF_Branch));
    EXPECT_FALSE(desc->has(IF_IndirectBranch));
}

// ---------------------------------------------------------------------------
// XDL WMMA: v_wmma_f32_16x16x32_f16
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, WMMA_XDL_F32_16x16x32_F16) {
    auto* desc = getDescByMnemonic("v_wmma_f32_16x16x32_f16");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_WMMA));
    EXPECT_TRUE(desc->has(IF_WMMA_XDL));
}

// ---------------------------------------------------------------------------
// Non-XDL WMMA: v_wmma_f32_16x16x4_f32 — FP32 input
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, WMMA_NonXDL_F32_16x16x4_F32) {
    auto* desc = getDescByMnemonic("v_wmma_f32_16x16x4_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_WMMA));
    EXPECT_FALSE(desc->has(IF_WMMA_XDL));
}

// ---------------------------------------------------------------------------
// Non-XDL WMMA: v_wmma_f32_16x16x16_f16
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, WMMA_NonXDL_F32_16x16x16_F16) {
    auto* desc = getDescByMnemonic("v_wmma_f32_16x16x16_f16");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_WMMA));
    EXPECT_FALSE(desc->has(IF_WMMA_XDL));
}

// ---------------------------------------------------------------------------
// XDL SWMMAC: v_swmmac_f32_16x16x64_bf16
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, SWMMA_XDL_F32_16x16x64_BF16) {
    auto* desc = getDescByMnemonic("v_swmmac_f32_16x16x64_bf16");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_SWMMA));
    EXPECT_TRUE(desc->has(IF_WMMA_XDL));
}

// ---------------------------------------------------------------------------
// Non-XDL SWMMAC: v_swmmac_f32_16x16x32_bf16
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, SWMMA_NonXDL_F32_16x16x32_BF16) {
    auto* desc = getDescByMnemonic("v_swmmac_f32_16x16x32_bf16");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_SWMMA));
    EXPECT_FALSE(desc->has(IF_WMMA_XDL));
}

// ---------------------------------------------------------------------------
// XDL MXWMMA: v_wmma_scale_f32_16x16x128_f8f6f4
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, MXWMMA_XDL_Scale_F32_16x16x128) {
    auto* desc = getDescByMnemonic("v_wmma_scale_f32_16x16x128_f8f6f4");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_MXWMMA));
    EXPECT_TRUE(desc->has(IF_WMMA_XDL));
}

// ---------------------------------------------------------------------------
// Transcendental 32-bit: v_rcp_f32 — TRANS pipe, not Trans64
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, Trans32_VRcpF32) {
    auto* desc = getDescByMnemonic("v_rcp_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_Transcendental));
    EXPECT_FALSE(desc->has(IF_Trans64));
}

// ---------------------------------------------------------------------------
// Transcendental 64-bit: v_rcp_f64 — tracked as VALU, not TRANS pipe
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, Trans64_VRcpF64) {
    auto* desc = getDescByMnemonic("v_rcp_f64");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_Transcendental));
    EXPECT_TRUE(desc->has(IF_Trans64));
    // f64 transcendentals classify as TRANS (not DPMACC): TRANS is matched
    // before DPMACC, so they never reach the DPMACC branch.
    EXPECT_FALSE(desc->has(IF_DPMACC));
}

// ---------------------------------------------------------------------------
// DPMACC: double-precision MACC VALU carries IF_DPMACC.
// f64 arithmetic, f64-reading conversions, and f64 compares.
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, DPMACC_F64Arithmetic) {
    for (const char* mn : {"v_add_f64", "v_mul_f64", "v_fma_f64", "v_max_f64", "v_min_f64"}) {
        auto* desc = getDescByMnemonic(mn);
        ASSERT_NE(desc, nullptr) << mn;
        EXPECT_TRUE(desc->has(IF_VALU)) << mn;
        EXPECT_TRUE(desc->has(IF_DPMACC)) << mn;
        EXPECT_FALSE(desc->has(IF_Transcendental)) << mn;
    }
}

TEST_F(HwInstDescTest, DPMACC_F64Convert) {
    // v_cvt_u32_f64 reads f64 -> DPMACC; v_cvt_f64_u32 produces f64 -> not DPMACC.
    auto* toU32 = getDescByMnemonic("v_cvt_u32_f64");
    ASSERT_NE(toU32, nullptr);
    EXPECT_TRUE(toU32->has(IF_DPMACC));

    auto* toF64 = getDescByMnemonic("v_cvt_f64_u32");
    ASSERT_NE(toF64, nullptr);
    EXPECT_FALSE(toF64->has(IF_DPMACC));
}

TEST_F(HwInstDescTest, DPMACC_F64Compare) {
    auto* cmp = getDescByMnemonic("v_cmp_lt_f64");
    ASSERT_NE(cmp, nullptr);
    EXPECT_TRUE(cmp->has(IF_DPMACC));

    auto* cmpx = getDescByMnemonic("v_cmpx_eq_f64");
    ASSERT_NE(cmpx, nullptr);
    EXPECT_TRUE(cmpx->has(IF_DPMACC));

    // class compares are DPMACC too: they run on the double-precision pipe like
    // the relational f64 compares.
    auto* cmpClass = getDescByMnemonic("v_cmp_class_f64");
    ASSERT_NE(cmpClass, nullptr);
    EXPECT_TRUE(cmpClass->has(IF_DPMACC));

    auto* cmpxClass = getDescByMnemonic("v_cmpx_class_f64");
    ASSERT_NE(cmpxClass, nullptr);
    EXPECT_TRUE(cmpxClass->has(IF_DPMACC));
}

TEST_F(HwInstDescTest, DPMACC_F32NotMarked) {
    // 32-bit arithmetic must not carry DPMACC.
    for (const char* mn : {"v_add_f32", "v_mul_f32", "v_cmp_lt_f32"}) {
        auto* desc = getDescByMnemonic(mn);
        ASSERT_NE(desc, nullptr) << mn;
        EXPECT_FALSE(desc->has(IF_DPMACC)) << mn;
    }
}

// ---------------------------------------------------------------------------
// Grandchild format flag inheritance: v_mul_lo_u32 (VOP3_2SRC_COMMUTATIVE -> VOP3_2SRC -> VOP3)
// Verifies VALU flag propagates through multi-level parent chain.
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, VOP3_2SRC_Commutative_InheritsVALU) {
    auto* desc = getDescByMnemonic("v_mul_lo_u32");
    ASSERT_NE(desc, nullptr);
    EXPECT_TRUE(desc->has(IF_VALU));
    EXPECT_TRUE(desc->has(IF_Commutative));
}

// ---------------------------------------------------------------------------
// VOPC: v_cmp_eq_f32 — compare, promotable to VOP3
// ---------------------------------------------------------------------------
TEST_F(HwInstDescTest, VOPC_VCmpEqF32) {
    auto* desc = getDescByMnemonic("v_cmp_eq_f32");
    ASSERT_NE(desc, nullptr);
    EXPECT_EQ(desc->microcode, MicrocodeFormat::MC_VOPC);
    EXPECT_EQ(desc->unit, ExecUnit::VALU);
    EXPECT_TRUE(desc->has(IF_VALU));
    EXPECT_EQ(desc->promotedFormat, MicrocodeFormat::MC_VOP3);

    auto fields = desc->operandFields;
    ASSERT_EQ(fields.size(), 3u);

    // D0: vcc (64-bit)
    EXPECT_TRUE(fields[0].isDest);
    EXPECT_EQ(fields[0].encodeField, EncodeField::vdst);
    EXPECT_EQ(fields[0].fieldType, FieldType::vcc);
    EXPECT_EQ(fields[0].fieldSizeBits, 64u);

    // In promoted encoding, D0 becomes sreg
    auto pf = desc->promotedFields;
    ASSERT_EQ(pf.size(), 3u);
    EXPECT_EQ(pf[0].fieldType, FieldType::sreg);
}