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Unified Diff: test/unittests/compiler/arm64/instruction-selector-arm64-unittest.cc

Issue 1179893003: Reland [arm64][turbofan]: Handle any immediate shift. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 6 months ago
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Index: test/unittests/compiler/arm64/instruction-selector-arm64-unittest.cc
diff --git a/test/unittests/compiler/arm64/instruction-selector-arm64-unittest.cc b/test/unittests/compiler/arm64/instruction-selector-arm64-unittest.cc
index 68a5b3359dd972f3a3214c5426b57ffc18f681eb..9b2e35a31232fb4b28f368cc145589ac620c28bc 100644
--- a/test/unittests/compiler/arm64/instruction-selector-arm64-unittest.cc
+++ b/test/unittests/compiler/arm64/instruction-selector-arm64-unittest.cc
@@ -642,7 +642,9 @@ TEST_F(InstructionSelectorTest, AddShiftByImmediateOnLeft) {
if (shift.mi.machine_type != kMachInt32) continue;
if (shift.mi.arch_opcode == kArm64Ror32) continue;
- TRACED_FORRANGE(int, imm, 0, 31) {
+ // The available shift operand range is `0 <= imm < 32`, but we also test
+ // that immediates outside this range are handled properly (modulo-32).
+ TRACED_FORRANGE(int, imm, -32, 63) {
StreamBuilder m(this, kMachInt32, kMachInt32, kMachInt32);
m.Return((m.Int32Add)(
(m.*shift.mi.constructor)(m.Parameter(1), m.Int32Constant(imm)),
@@ -663,7 +665,9 @@ TEST_F(InstructionSelectorTest, AddShiftByImmediateOnLeft) {
if (shift.mi.machine_type != kMachInt64) continue;
if (shift.mi.arch_opcode == kArm64Ror) continue;
- TRACED_FORRANGE(int, imm, 0, 63) {
+ // The available shift operand range is `0 <= imm < 64`, but we also test
+ // that immediates outside this range are handled properly (modulo-64).
+ TRACED_FORRANGE(int, imm, -64, 127) {
StreamBuilder m(this, kMachInt64, kMachInt64, kMachInt64);
m.Return((m.Int64Add)(
(m.*shift.mi.constructor)(m.Parameter(1), m.Int64Constant(imm)),
@@ -2202,14 +2206,17 @@ TEST_F(InstructionSelectorTest, Word64XorMinusOneWithParameter) {
TEST_F(InstructionSelectorTest, Word32ShrWithWord32AndWithImmediate) {
- TRACED_FORRANGE(int32_t, lsb, 1, 31) {
+ // The available shift operand range is `0 <= imm < 32`, but we also test
+ // that immediates outside this range are handled properly (modulo-32).
+ TRACED_FORRANGE(int32_t, shift, -32, 63) {
+ int32_t lsb = shift & 0x1f;
TRACED_FORRANGE(int32_t, width, 1, 32 - lsb) {
uint32_t jnk = rng()->NextInt();
- jnk >>= 32 - lsb;
+ jnk = (lsb > 0) ? (jnk >> (32 - lsb)) : 0;
uint32_t msk = ((0xffffffffu >> (32 - width)) << lsb) | jnk;
StreamBuilder m(this, kMachInt32, kMachInt32);
m.Return(m.Word32Shr(m.Word32And(m.Parameter(0), m.Int32Constant(msk)),
- m.Int32Constant(lsb)));
+ m.Int32Constant(shift)));
Stream s = m.Build();
ASSERT_EQ(1U, s.size());
EXPECT_EQ(kArm64Ubfx32, s[0]->arch_opcode());
@@ -2218,14 +2225,15 @@ TEST_F(InstructionSelectorTest, Word32ShrWithWord32AndWithImmediate) {
EXPECT_EQ(width, s.ToInt32(s[0]->InputAt(2)));
}
}
- TRACED_FORRANGE(int32_t, lsb, 1, 31) {
+ TRACED_FORRANGE(int32_t, shift, -32, 63) {
+ int32_t lsb = shift & 0x1f;
TRACED_FORRANGE(int32_t, width, 1, 32 - lsb) {
uint32_t jnk = rng()->NextInt();
- jnk >>= 32 - lsb;
+ jnk = (lsb > 0) ? (jnk >> (32 - lsb)) : 0;
uint32_t msk = ((0xffffffffu >> (32 - width)) << lsb) | jnk;
StreamBuilder m(this, kMachInt32, kMachInt32);
m.Return(m.Word32Shr(m.Word32And(m.Int32Constant(msk), m.Parameter(0)),
- m.Int32Constant(lsb)));
+ m.Int32Constant(shift)));
Stream s = m.Build();
ASSERT_EQ(1U, s.size());
EXPECT_EQ(kArm64Ubfx32, s[0]->arch_opcode());
@@ -2238,15 +2246,18 @@ TEST_F(InstructionSelectorTest, Word32ShrWithWord32AndWithImmediate) {
TEST_F(InstructionSelectorTest, Word64ShrWithWord64AndWithImmediate) {
- TRACED_FORRANGE(int32_t, lsb, 1, 63) {
+ // The available shift operand range is `0 <= imm < 64`, but we also test
+ // that immediates outside this range are handled properly (modulo-64).
+ TRACED_FORRANGE(int32_t, shift, -64, 127) {
+ int32_t lsb = shift & 0x3f;
TRACED_FORRANGE(int32_t, width, 1, 64 - lsb) {
uint64_t jnk = rng()->NextInt64();
- jnk >>= 64 - lsb;
+ jnk = (lsb > 0) ? (jnk >> (64 - lsb)) : 0;
uint64_t msk =
((V8_UINT64_C(0xffffffffffffffff) >> (64 - width)) << lsb) | jnk;
StreamBuilder m(this, kMachInt64, kMachInt64);
m.Return(m.Word64Shr(m.Word64And(m.Parameter(0), m.Int64Constant(msk)),
- m.Int64Constant(lsb)));
+ m.Int64Constant(shift)));
Stream s = m.Build();
ASSERT_EQ(1U, s.size());
EXPECT_EQ(kArm64Ubfx, s[0]->arch_opcode());
@@ -2255,15 +2266,16 @@ TEST_F(InstructionSelectorTest, Word64ShrWithWord64AndWithImmediate) {
EXPECT_EQ(width, s.ToInt64(s[0]->InputAt(2)));
}
}
- TRACED_FORRANGE(int32_t, lsb, 1, 63) {
+ TRACED_FORRANGE(int32_t, shift, -64, 127) {
+ int32_t lsb = shift & 0x3f;
TRACED_FORRANGE(int32_t, width, 1, 64 - lsb) {
uint64_t jnk = rng()->NextInt64();
- jnk >>= 64 - lsb;
+ jnk = (lsb > 0) ? (jnk >> (64 - lsb)) : 0;
uint64_t msk =
((V8_UINT64_C(0xffffffffffffffff) >> (64 - width)) << lsb) | jnk;
StreamBuilder m(this, kMachInt64, kMachInt64);
m.Return(m.Word64Shr(m.Word64And(m.Int64Constant(msk), m.Parameter(0)),
- m.Int64Constant(lsb)));
+ m.Int64Constant(shift)));
Stream s = m.Build();
ASSERT_EQ(1U, s.size());
EXPECT_EQ(kArm64Ubfx, s[0]->arch_opcode());
@@ -2276,11 +2288,14 @@ TEST_F(InstructionSelectorTest, Word64ShrWithWord64AndWithImmediate) {
TEST_F(InstructionSelectorTest, Word32AndWithImmediateWithWord32Shr) {
- TRACED_FORRANGE(int32_t, lsb, 1, 31) {
+ // The available shift operand range is `0 <= imm < 32`, but we also test
+ // that immediates outside this range are handled properly (modulo-32).
+ TRACED_FORRANGE(int32_t, shift, -32, 63) {
+ int32_t lsb = shift & 0x1f;
TRACED_FORRANGE(int32_t, width, 1, 31) {
uint32_t msk = (1 << width) - 1;
StreamBuilder m(this, kMachInt32, kMachInt32);
- m.Return(m.Word32And(m.Word32Shr(m.Parameter(0), m.Int32Constant(lsb)),
+ m.Return(m.Word32And(m.Word32Shr(m.Parameter(0), m.Int32Constant(shift)),
m.Int32Constant(msk)));
Stream s = m.Build();
ASSERT_EQ(1U, s.size());
@@ -2291,12 +2306,14 @@ TEST_F(InstructionSelectorTest, Word32AndWithImmediateWithWord32Shr) {
EXPECT_EQ(actual_width, s.ToInt32(s[0]->InputAt(2)));
}
}
- TRACED_FORRANGE(int32_t, lsb, 1, 31) {
+ TRACED_FORRANGE(int32_t, shift, -32, 63) {
+ int32_t lsb = shift & 0x1f;
TRACED_FORRANGE(int32_t, width, 1, 31) {
uint32_t msk = (1 << width) - 1;
StreamBuilder m(this, kMachInt32, kMachInt32);
- m.Return(m.Word32And(m.Int32Constant(msk),
- m.Word32Shr(m.Parameter(0), m.Int32Constant(lsb))));
+ m.Return(
+ m.Word32And(m.Int32Constant(msk),
+ m.Word32Shr(m.Parameter(0), m.Int32Constant(shift))));
Stream s = m.Build();
ASSERT_EQ(1U, s.size());
EXPECT_EQ(kArm64Ubfx32, s[0]->arch_opcode());
@@ -2310,11 +2327,14 @@ TEST_F(InstructionSelectorTest, Word32AndWithImmediateWithWord32Shr) {
TEST_F(InstructionSelectorTest, Word64AndWithImmediateWithWord64Shr) {
- TRACED_FORRANGE(int64_t, lsb, 1, 63) {
+ // The available shift operand range is `0 <= imm < 64`, but we also test
+ // that immediates outside this range are handled properly (modulo-64).
+ TRACED_FORRANGE(int64_t, shift, -64, 127) {
+ int64_t lsb = shift & 0x3f;
TRACED_FORRANGE(int64_t, width, 1, 63) {
uint64_t msk = (V8_UINT64_C(1) << width) - 1;
StreamBuilder m(this, kMachInt64, kMachInt64);
- m.Return(m.Word64And(m.Word64Shr(m.Parameter(0), m.Int64Constant(lsb)),
+ m.Return(m.Word64And(m.Word64Shr(m.Parameter(0), m.Int64Constant(shift)),
m.Int64Constant(msk)));
Stream s = m.Build();
ASSERT_EQ(1U, s.size());
@@ -2325,12 +2345,14 @@ TEST_F(InstructionSelectorTest, Word64AndWithImmediateWithWord64Shr) {
EXPECT_EQ(actual_width, s.ToInt64(s[0]->InputAt(2)));
}
}
- TRACED_FORRANGE(int64_t, lsb, 1, 63) {
+ TRACED_FORRANGE(int64_t, shift, -64, 127) {
+ int64_t lsb = shift & 0x3f;
TRACED_FORRANGE(int64_t, width, 1, 63) {
uint64_t msk = (V8_UINT64_C(1) << width) - 1;
StreamBuilder m(this, kMachInt64, kMachInt64);
- m.Return(m.Word64And(m.Int64Constant(msk),
- m.Word64Shr(m.Parameter(0), m.Int64Constant(lsb))));
+ m.Return(
+ m.Word64And(m.Int64Constant(msk),
+ m.Word64Shr(m.Parameter(0), m.Int64Constant(shift))));
Stream s = m.Build();
ASSERT_EQ(1U, s.size());
EXPECT_EQ(kArm64Ubfx, s[0]->arch_opcode());
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