bpf: add various jit test cases

Add few test cases that check the rnu-time results under JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

tools/testing/selftests/bpf/test_verifier.c

@@ -11140,6 +11140,95 @@ static struct bpf_test tests[] = {
 		.result = REJECT,
 		.prog_type = BPF_PROG_TYPE_TRACEPOINT,
 	},
+	{
+		"jit: lsh, rsh, arsh by 1",
+		.insns = {
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_MOV64_IMM(BPF_REG_1, 0xff),
+			BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 1),
+			BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 1),
+			BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0x3fc, 1),
+			BPF_EXIT_INSN(),
+			BPF_ALU64_IMM(BPF_RSH, BPF_REG_1, 1),
+			BPF_ALU32_IMM(BPF_RSH, BPF_REG_1, 1),
+			BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0xff, 1),
+			BPF_EXIT_INSN(),
+			BPF_ALU64_IMM(BPF_ARSH, BPF_REG_1, 1),
+			BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0x7f, 1),
+			BPF_EXIT_INSN(),
+			BPF_MOV64_IMM(BPF_REG_0, 2),
+			BPF_EXIT_INSN(),
+		},
+		.result = ACCEPT,
+		.retval = 2,
+	},
+	{
+		"jit: mov32 for ldimm64, 1",
+		.insns = {
+			BPF_MOV64_IMM(BPF_REG_0, 2),
+			BPF_LD_IMM64(BPF_REG_1, 0xfeffffffffffffffULL),
+			BPF_ALU64_IMM(BPF_RSH, BPF_REG_1, 32),
+			BPF_LD_IMM64(BPF_REG_2, 0xfeffffffULL),
+			BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 1),
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_EXIT_INSN(),
+		},
+		.result = ACCEPT,
+		.retval = 2,
+	},
+	{
+		"jit: mov32 for ldimm64, 2",
+		.insns = {
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_LD_IMM64(BPF_REG_1, 0x1ffffffffULL),
+			BPF_LD_IMM64(BPF_REG_2, 0xffffffffULL),
+			BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 1),
+			BPF_MOV64_IMM(BPF_REG_0, 2),
+			BPF_EXIT_INSN(),
+		},
+		.result = ACCEPT,
+		.retval = 2,
+	},
+	{
+		"jit: various mul tests",
+		.insns = {
+			BPF_LD_IMM64(BPF_REG_2, 0xeeff0d413122ULL),
+			BPF_LD_IMM64(BPF_REG_0, 0xfefefeULL),
+			BPF_LD_IMM64(BPF_REG_1, 0xefefefULL),
+			BPF_ALU64_REG(BPF_MUL, BPF_REG_0, BPF_REG_1),
+			BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_2, 2),
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_EXIT_INSN(),
+			BPF_LD_IMM64(BPF_REG_3, 0xfefefeULL),
+			BPF_ALU64_REG(BPF_MUL, BPF_REG_3, BPF_REG_1),
+			BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_EXIT_INSN(),
+			BPF_MOV32_REG(BPF_REG_2, BPF_REG_2),
+			BPF_LD_IMM64(BPF_REG_0, 0xfefefeULL),
+			BPF_ALU32_REG(BPF_MUL, BPF_REG_0, BPF_REG_1),
+			BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_2, 2),
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_EXIT_INSN(),
+			BPF_LD_IMM64(BPF_REG_3, 0xfefefeULL),
+			BPF_ALU32_REG(BPF_MUL, BPF_REG_3, BPF_REG_1),
+			BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_EXIT_INSN(),
+			BPF_LD_IMM64(BPF_REG_0, 0x952a7bbcULL),
+			BPF_LD_IMM64(BPF_REG_1, 0xfefefeULL),
+			BPF_LD_IMM64(BPF_REG_2, 0xeeff0d413122ULL),
+			BPF_ALU32_REG(BPF_MUL, BPF_REG_2, BPF_REG_1),
+			BPF_JMP_REG(BPF_JEQ, BPF_REG_2, BPF_REG_0, 2),
+			BPF_MOV64_IMM(BPF_REG_0, 1),
+			BPF_EXIT_INSN(),
+			BPF_MOV64_IMM(BPF_REG_0, 2),
+			BPF_EXIT_INSN(),
+		},
+		.result = ACCEPT,
+		.retval = 2,
+	},
+
 };
 
 static int probe_filter_length(const struct bpf_insn *fp)