Revision: 23565
Author: [email protected]
Date: Mon Sep 1 13:41:19 2014 UTC
Log: [turbofan] Add/sub ARM64 lhs immediate tests
Addition supports lhs immediates by commuting. Subtraction supports only
zero
lhs immediates, through use of the zero register.
BUG=
[email protected]
Review URL: https://codereview.chromium.org/518893002
https://code.google.com/p/v8/source/detail?r=23565
Modified:
/branches/bleeding_edge/src/compiler/arm64/instruction-selector-arm64-unittest.cc
=======================================
---
/branches/bleeding_edge/src/compiler/arm64/instruction-selector-arm64-unittest.cc
Mon Sep 1 10:26:12 2014 UTC
+++
/branches/bleeding_edge/src/compiler/arm64/instruction-selector-arm64-unittest.cc
Mon Sep 1 13:41:19 2014 UTC
@@ -264,7 +264,7 @@
}
-TEST_P(InstructionSelectorAddSubTest, Immediate) {
+TEST_P(InstructionSelectorAddSubTest, ImmediateOnRight) {
const MachInst2 dpi = GetParam();
const MachineType type = dpi.machine_type;
TRACED_FOREACH(int32_t, imm, kAddSubImmediates) {
@@ -279,12 +279,62 @@
EXPECT_EQ(1U, s[0]->OutputCount());
}
}
+
+
+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.
--
--
v8-dev mailing list
[email protected]
http://groups.google.com/group/v8-dev
---
You received this message because you are subscribed to the Google Groups "v8-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
