}
-TEST_P(InstructionSelectorAddSubTest, Immediate) {
+TEST_P(InstructionSelectorAddSubTest, ImmediateOnRight) {
const MachInst2 dpi = GetParam();
const MachineType type = dpi.machine_type;
TRACED_FOREACH(int32_t, imm, kAddSubImmediates) {
}
+TEST_P(InstructionSelectorAddSubTest, ImmediateOnLeft) {
+ const MachInst2 dpi = GetParam();
+ const MachineType type = dpi.machine_type;
+
+ TRACED_FOREACH(int32_t, imm, kAddSubImmediates) {
+ StreamBuilder m(this, type, type);
+ m.Return((m.*dpi.constructor)(m.Int32Constant(imm), m.Parameter(0)));
+ Stream s = m.Build();
+
+ // Add can support an immediate on the left by commuting, but Sub can't
+ // commute. We test zero-on-left Sub later.
+ if (strstr(dpi.constructor_name, "Add") != NULL) {
+ ASSERT_EQ(1U, s.size());
+ EXPECT_EQ(dpi.arch_opcode, s[0]->arch_opcode());
+ ASSERT_EQ(2U, s[0]->InputCount());
+ EXPECT_TRUE(s[0]->InputAt(1)->IsImmediate());
+ EXPECT_EQ(imm, s.ToInt32(s[0]->InputAt(1)));
+ EXPECT_EQ(1U, s[0]->OutputCount());
+ }
+ }
+}
+
+
INSTANTIATE_TEST_CASE_P(InstructionSelectorTest, InstructionSelectorAddSubTest,
::testing::ValuesIn(kAddSubInstructions));
+TEST_F(InstructionSelectorTest, SubZeroOnLeft) {
+ // Subtraction with zero on the left maps to Neg.
+ {
+ // 32-bit subtract.
+ StreamBuilder m(this, kMachInt32, kMachInt32, kMachInt32);
+ m.Return(m.Int32Sub(m.Int32Constant(0), m.Parameter(0)));
+ Stream s = m.Build();
+
+ ASSERT_EQ(1U, s.size());
+ EXPECT_EQ(kArm64Neg32, s[0]->arch_opcode());
+ EXPECT_EQ(1U, s[0]->InputCount());
+ EXPECT_EQ(1U, s[0]->OutputCount());
+ }
+ {
+ // 64-bit subtract.
+ StreamBuilder m(this, kMachInt64, kMachInt64, kMachInt64);
+ m.Return(m.Int64Sub(m.Int32Constant(0), m.Parameter(0)));
+ Stream s = m.Build();
+
+ ASSERT_EQ(1U, s.size());
+ EXPECT_EQ(kArm64Neg, s[0]->arch_opcode());
+ EXPECT_EQ(1U, s[0]->InputCount());
+ EXPECT_EQ(1U, s[0]->OutputCount());
+ }
+}
+
+
// -----------------------------------------------------------------------------
// Shift instructions.