Fix codegen_test for long multiplication.
It seems like clang (that we use on the host) was *very* forgiving
with this broken test: the code generated for for MulLong used ebx
but this is a callee-save register in C but not ART. Also, the test
was not properly written for handling longs, so it was taking
unitialized stack entries.
GCC on target is not as forgiving.
Change-Id: I5d7a962f8a72b3ce407dce50ca50b4ffc690c99e
diff --git a/compiler/optimizing/codegen_test.cc b/compiler/optimizing/codegen_test.cc
index afcff1e..94f56e5 100644
--- a/compiler/optimizing/codegen_test.cc
+++ b/compiler/optimizing/codegen_test.cc
@@ -18,8 +18,10 @@
#include "arch/instruction_set.h"
#include "arch/arm/instruction_set_features_arm.h"
+#include "arch/arm/registers_arm.h"
#include "arch/arm64/instruction_set_features_arm64.h"
#include "arch/x86/instruction_set_features_x86.h"
+#include "arch/x86/registers_x86.h"
#include "arch/x86_64/instruction_set_features_x86_64.h"
#include "base/macros.h"
#include "builder.h"
@@ -37,6 +39,8 @@
#include "register_allocator.h"
#include "ssa_liveness_analysis.h"
#include "utils.h"
+#include "utils/arm/managed_register_arm.h"
+#include "utils/x86/managed_register_x86.h"
#include "gtest/gtest.h"
@@ -53,17 +57,42 @@
const ArmInstructionSetFeatures& isa_features,
const CompilerOptions& compiler_options)
: arm::CodeGeneratorARM(graph, isa_features, compiler_options) {
- AddAllocatedRegister(Location::RegisterLocation(6));
- AddAllocatedRegister(Location::RegisterLocation(7));
+ AddAllocatedRegister(Location::RegisterLocation(arm::R6));
+ AddAllocatedRegister(Location::RegisterLocation(arm::R7));
}
void SetupBlockedRegisters(bool is_baseline) const OVERRIDE {
arm::CodeGeneratorARM::SetupBlockedRegisters(is_baseline);
- blocked_core_registers_[4] = true;
- blocked_core_registers_[6] = false;
- blocked_core_registers_[7] = false;
+ blocked_core_registers_[arm::R4] = true;
+ blocked_core_registers_[arm::R6] = false;
+ blocked_core_registers_[arm::R7] = false;
// Makes pair R6-R7 available.
- blocked_register_pairs_[6 >> 1] = false;
+ blocked_register_pairs_[arm::R6_R7] = false;
+ }
+};
+
+class TestCodeGeneratorX86 : public x86::CodeGeneratorX86 {
+ public:
+ TestCodeGeneratorX86(HGraph* graph,
+ const X86InstructionSetFeatures& isa_features,
+ const CompilerOptions& compiler_options)
+ : x86::CodeGeneratorX86(graph, isa_features, compiler_options) {
+ // Save edi, we need it for getting enough registers for long multiplication.
+ AddAllocatedRegister(Location::RegisterLocation(x86::EDI));
+ }
+
+ void SetupBlockedRegisters(bool is_baseline) const OVERRIDE {
+ x86::CodeGeneratorX86::SetupBlockedRegisters(is_baseline);
+ // ebx is a callee-save register in C, but caller-save for ART.
+ blocked_core_registers_[x86::EBX] = true;
+ blocked_register_pairs_[x86::EAX_EBX] = true;
+ blocked_register_pairs_[x86::EDX_EBX] = true;
+ blocked_register_pairs_[x86::ECX_EBX] = true;
+ blocked_register_pairs_[x86::EBX_EDI] = true;
+
+ // Make edi available.
+ blocked_core_registers_[x86::EDI] = false;
+ blocked_register_pairs_[x86::ECX_EDI] = false;
}
};
@@ -101,7 +130,7 @@
}
Expected result = f();
if (has_result) {
- ASSERT_EQ(result, expected);
+ ASSERT_EQ(expected, result);
}
}
@@ -112,7 +141,7 @@
CompilerOptions compiler_options;
std::unique_ptr<const X86InstructionSetFeatures> features_x86(
X86InstructionSetFeatures::FromCppDefines());
- x86::CodeGeneratorX86 codegenX86(graph, *features_x86.get(), compiler_options);
+ TestCodeGeneratorX86 codegenX86(graph, *features_x86.get(), compiler_options);
// We avoid doing a stack overflow check that requires the runtime being setup,
// by making sure the compiler knows the methods we are running are leaf methods.
codegenX86.CompileBaseline(&allocator, true);
@@ -520,29 +549,49 @@
RunCodeOptimized(graph, hook_before_codegen, true, 0);
}
-#define MUL_TEST(TYPE, TEST_NAME) \
- TEST(CodegenTest, Return ## TEST_NAME) { \
- const uint16_t data[] = TWO_REGISTERS_CODE_ITEM( \
- Instruction::CONST_4 | 3 << 12 | 0, \
- Instruction::CONST_4 | 4 << 12 | 1 << 8, \
- Instruction::MUL_ ## TYPE, 1 << 8 | 0, \
- Instruction::RETURN); \
- \
- TestCode(data, true, 12); \
- } \
- \
- TEST(CodegenTest, Return ## TEST_NAME ## 2addr) { \
- const uint16_t data[] = TWO_REGISTERS_CODE_ITEM( \
- Instruction::CONST_4 | 3 << 12 | 0, \
- Instruction::CONST_4 | 4 << 12 | 1 << 8, \
- Instruction::MUL_ ## TYPE ## _2ADDR | 1 << 12, \
- Instruction::RETURN); \
- \
- TestCode(data, true, 12); \
- }
+TEST(CodegenTest, ReturnMulInt) {
+ const uint16_t data[] = TWO_REGISTERS_CODE_ITEM(
+ Instruction::CONST_4 | 3 << 12 | 0,
+ Instruction::CONST_4 | 4 << 12 | 1 << 8,
+ Instruction::MUL_INT, 1 << 8 | 0,
+ Instruction::RETURN);
-MUL_TEST(INT, MulInt);
-MUL_TEST(LONG, MulLong);
+ TestCode(data, true, 12);
+}
+
+TEST(CodegenTest, ReturnMulInt2addr) {
+ const uint16_t data[] = TWO_REGISTERS_CODE_ITEM(
+ Instruction::CONST_4 | 3 << 12 | 0,
+ Instruction::CONST_4 | 4 << 12 | 1 << 8,
+ Instruction::MUL_INT_2ADDR | 1 << 12,
+ Instruction::RETURN);
+
+ TestCode(data, true, 12);
+}
+
+TEST(CodegenTest, ReturnMulLong) {
+ const uint16_t data[] = FOUR_REGISTERS_CODE_ITEM(
+ Instruction::CONST_4 | 3 << 12 | 0,
+ Instruction::CONST_4 | 0 << 12 | 1 << 8,
+ Instruction::CONST_4 | 4 << 12 | 2 << 8,
+ Instruction::CONST_4 | 0 << 12 | 3 << 8,
+ Instruction::MUL_LONG, 2 << 8 | 0,
+ Instruction::RETURN_WIDE);
+
+ TestCodeLong(data, true, 12);
+}
+
+TEST(CodegenTest, ReturnMulLong2addr) {
+ const uint16_t data[] = FOUR_REGISTERS_CODE_ITEM(
+ Instruction::CONST_4 | 3 << 12 | 0 << 8,
+ Instruction::CONST_4 | 0 << 12 | 1 << 8,
+ Instruction::CONST_4 | 4 << 12 | 2 << 8,
+ Instruction::CONST_4 | 0 << 12 | 3 << 8,
+ Instruction::MUL_LONG_2ADDR | 2 << 12,
+ Instruction::RETURN_WIDE);
+
+ TestCodeLong(data, true, 12);
+}
TEST(CodegenTest, ReturnMulIntLit8) {
const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
