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Unified Diff: unittests/Bitcode/NaClParseInstsTest.cpp

Issue 939073008: Rebased PNaCl localmods in LLVM to 223109 (Closed)
Patch Set: undo localmod Created 5 years, 10 months ago
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Index: unittests/Bitcode/NaClParseInstsTest.cpp
diff --git a/unittests/Bitcode/NaClParseInstsTest.cpp b/unittests/Bitcode/NaClParseInstsTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..b3940abd4cf73947f29a12e3624717cb499172d5
--- /dev/null
+++ b/unittests/Bitcode/NaClParseInstsTest.cpp
@@ -0,0 +1,416 @@
+//===- llvm/unittest/Bitcode/NaClParseInstsTest.cpp ----------------------===//
+// Tests parser for PNaCl bitcode instructions.
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// Tests record errors in the function block when parsing PNaCl bitcode.
+
+// TODO(kschimpf) Add more tests.
+
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/Bitcode/NaCl/NaClBitcodeMunge.h"
+#include "llvm/Bitcode/NaCl/NaClBitcodeParser.h"
+#include "llvm/Bitcode/NaCl/NaClLLVMBitCodes.h"
+
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+static const uint64_t Terminator = 0x5768798008978675LL;
+
+// Note: alignment stored as 0 or log2(Alignment)+1.
+uint64_t getEncAlignPower(unsigned Power) {
+ return Power + 1;
+}
+uint64_t getEncAlignZero() { return 0; }
+
+/// Test how we report a call arg that refers to nonexistent call argument
+TEST(NaClParseInstsTest, NonexistantCallArg) {
+ const uint64_t BitcodeRecords[] = {
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::MODULE_BLOCK_ID, 2, Terminator,
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::TYPE_BLOCK_ID_NEW, 2, Terminator,
+ 3, naclbitc::TYPE_CODE_NUMENTRY, 3, Terminator,
+ 3, naclbitc::TYPE_CODE_INTEGER, 32, Terminator,
+ 3, naclbitc::TYPE_CODE_VOID, Terminator,
+ 3, naclbitc::TYPE_CODE_FUNCTION, 0, 1, 0, 0, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator,
+ 3, naclbitc::MODULE_CODE_FUNCTION, 2, 0, 1, 0, Terminator,
+ 3, naclbitc::MODULE_CODE_FUNCTION, 2, 0, 0, 0, Terminator,
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::FUNCTION_BLOCK_ID, 2, Terminator,
+ 3, naclbitc::FUNC_CODE_DECLAREBLOCKS, 1, Terminator,
+ // Note: 100 is a bad value index in next line.
+ 3, naclbitc::FUNC_CODE_INST_CALL, 0, 4, 2, 100, Terminator,
+ 3, naclbitc::FUNC_CODE_INST_RET, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator
+ };
+
+ // Show text of base input.
+ NaClObjDumpMunger DumpMunger(BitcodeRecords,
+ array_lengthof(BitcodeRecords), Terminator);
+ EXPECT_FALSE(DumpMunger.runTestForAssembly("Nonexistant call arg"));
+ EXPECT_EQ(
+ "module { // BlockID = 8\n"
+ " types { // BlockID = 17\n"
+ " count 3;\n"
+ " @t0 = i32;\n"
+ " @t1 = void;\n"
+ " @t2 = void (i32, i32);\n"
+ " }\n"
+ " declare external void @f0(i32, i32);\n"
+ " define external void @f1(i32, i32);\n"
+ " function void @f1(i32 %p0, i32 %p1) { // BlockID = 12\n"
+ " blocks 1;\n"
+ " %b0:\n"
+ " call void @f0(i32 %p0, i32 @f0);\n"
+ "Error(66:4): Invalid relative value id: 100 (Must be <= 4)\n"
+ " ret void;\n"
+ " }\n"
+ "}\n",
+ DumpMunger.getTestResults());
+
+ NaClParseBitcodeMunger Munger(BitcodeRecords,
+ array_lengthof(BitcodeRecords), Terminator);
+ EXPECT_FALSE(Munger.runTest("Nonexistant call arg", true));
+ EXPECT_EQ(
+ "Error: (56:6) Invalid call argument: Index 1\n"
+ "Error: Invalid value in record\n",
+ Munger.getTestResults());
+}
+
+/// Test how we recognize alignments in alloca instructions.
+TEST(NaClParseInstsTests, BadAllocaAlignment) {
+ const uint64_t BitcodeRecords[] = {
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::MODULE_BLOCK_ID, 2, Terminator,
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::TYPE_BLOCK_ID_NEW, 2, Terminator,
+ 3, naclbitc::TYPE_CODE_NUMENTRY, 4, Terminator,
+ 3, naclbitc::TYPE_CODE_INTEGER, 32, Terminator,
+ 3, naclbitc::TYPE_CODE_VOID, Terminator,
+ 3, naclbitc::TYPE_CODE_FUNCTION, 0, 1, 0, Terminator,
+ 3, naclbitc::TYPE_CODE_INTEGER, 8, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator,
+ 3, naclbitc::MODULE_CODE_FUNCTION, 2, 0, 0, 0, Terminator,
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::FUNCTION_BLOCK_ID, 2, Terminator,
+ 3, naclbitc::FUNC_CODE_DECLAREBLOCKS, 1, Terminator,
+ 3, naclbitc::FUNC_CODE_INST_ALLOCA, 1, getEncAlignPower(0), Terminator,
+ 3, naclbitc::FUNC_CODE_INST_RET, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator
+ };
+
+ const uint64_t ReplaceIndex = 11; // index for FUNC_CODE_INST_ALLOCA
+
+ // Show text when alignment is 1.
+ NaClObjDumpMunger DumpMunger(BitcodeRecords,
+ array_lengthof(BitcodeRecords), Terminator);
+ EXPECT_TRUE(DumpMunger.runTestForAssembly("BadAllocaAlignment"));
+ EXPECT_EQ(
+ "module { // BlockID = 8\n"
+ " types { // BlockID = 17\n"
+ " count 4;\n"
+ " @t0 = i32;\n"
+ " @t1 = void;\n"
+ " @t2 = void (i32);\n"
+ " @t3 = i8;\n"
+ " }\n"
+ " define external void @f0(i32);\n"
+ " function void @f0(i32 %p0) { // BlockID = 12\n"
+ " blocks 1;\n"
+ " %b0:\n"
+ " %v0 = alloca i8, i32 %p0, align 1;\n"
+ " ret void;\n"
+ " }\n"
+ "}\n",
+ DumpMunger.getTestResults());
+ NaClParseBitcodeMunger Munger(BitcodeRecords,
+ array_lengthof(BitcodeRecords), Terminator);
+ EXPECT_TRUE(Munger.runTest("BadAllocaAlignment", true));
+
+ // Show what happens when changing alignment to 0.
+ const uint64_t Align0[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_ALLOCA, 1, getEncAlignZero(), Terminator,
+ };
+ EXPECT_TRUE(Munger.runTest(
+ "BadAllocaAlignment-0", Align0, array_lengthof(Align0), true));
+ EXPECT_TRUE(DumpMunger.runTestForAssembly(
+ "BadAllocaAlignment-0", Align0, array_lengthof(Align0)));
+ EXPECT_EQ(
+ " %v0 = alloca i8, i32 %p0, align 0;\n",
+ DumpMunger.getLinesWithSubstring("alloca"));
+
+ // Show what happens when changing alignment to 2**30.
+ const uint64_t Align30[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_ALLOCA, 1, getEncAlignPower(30), Terminator,
+ };
+ EXPECT_FALSE(Munger.runTest(
+ "BadAllocaAlignment-30", Align30, array_lengthof(Align30), true));
+ EXPECT_EQ(
+ "Error: (49:6) Alignment can't be greater than 2**29. Found: 2**30\n"
+ "Error: Invalid value in record\n",
+ Munger.getTestResults());
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadAllocaAlignment-30", Align30, array_lengthof(Align30)));
+ EXPECT_EQ(
+ " %v0 = alloca i8, i32 %p0, align 0;\n",
+ DumpMunger.getLinesWithSubstring("alloca"));
+ EXPECT_EQ(
+ "Error(62:4): Alignment can't be greater than 2**29. Found: 2**30\n",
+ DumpMunger.getLinesWithSubstring("Error"));
+
+ // Show what happens when changing alignment to 2**29.
+ const uint64_t Align29[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_ALLOCA, 1, getEncAlignPower(29), Terminator,
+ };
+ EXPECT_TRUE(Munger.runTest(
+ "BadAllocaAlignment-29", Align29, array_lengthof(Align29), true));
+ EXPECT_EQ(
+ "Successful parse!\n",
+ Munger.getTestResults());
+ EXPECT_TRUE(DumpMunger.runTestForAssembly(
+ "BadAllocaAlignment-29", Align29, array_lengthof(Align29)));
+ EXPECT_EQ(
+ " %v0 = alloca i8, i32 %p0, align 536870912;\n",
+ DumpMunger.getLinesWithSubstring("alloca"));
+}
+
+// Test how we recognize alignments in load instructions.
+TEST(NaClParseInstsTests, BadLoadAlignment) {
+ const uint64_t BitcodeRecords[] = {
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::MODULE_BLOCK_ID, 2, Terminator,
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::TYPE_BLOCK_ID_NEW, 2, Terminator,
+ 3, naclbitc::TYPE_CODE_NUMENTRY, 2, Terminator,
+ 3, naclbitc::TYPE_CODE_INTEGER, 32, Terminator,
+ 3, naclbitc::TYPE_CODE_FUNCTION, 0, 0, 0, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator,
+ 3, naclbitc::MODULE_CODE_FUNCTION, 1, 0, 0, 0, Terminator,
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::FUNCTION_BLOCK_ID, 2, Terminator,
+ 3, naclbitc::FUNC_CODE_DECLAREBLOCKS, 1, Terminator,
+ 3, naclbitc::FUNC_CODE_INST_LOAD, 1, getEncAlignPower(0), 0, Terminator,
+ 3, naclbitc::FUNC_CODE_INST_RET, 1, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator
+ };
+
+ const uint64_t ReplaceIndex = 9; // index for FUNC_CODE_INST_LOAD
+
+ // Show text when alignment is 1.
+ NaClObjDumpMunger DumpMunger(BitcodeRecords,
+ array_lengthof(BitcodeRecords), Terminator);
+ EXPECT_TRUE(DumpMunger.runTestForAssembly("BadLoadAlignment-1"));
+ EXPECT_EQ(
+ "module { // BlockID = 8\n"
+ " types { // BlockID = 17\n"
+ " count 2;\n"
+ " @t0 = i32;\n"
+ " @t1 = i32 (i32);\n"
+ " }\n"
+ " define external i32 @f0(i32);\n"
+ " function i32 @f0(i32 %p0) { // BlockID = 12\n"
+ " blocks 1;\n"
+ " %b0:\n"
+ " %v0 = load i32* %p0, align 1;\n"
+ " ret i32 %v0;\n"
+ " }\n"
+ "}\n",
+ DumpMunger.getTestResults());
+ NaClParseBitcodeMunger Munger(BitcodeRecords,
+ array_lengthof(BitcodeRecords), Terminator);
+ EXPECT_TRUE(Munger.runTest("BadLoadAlignment", true));
+
+ // Show what happens when changing alignment to 0.
+ const uint64_t Align0[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_LOAD, 1, getEncAlignZero(), 0, Terminator,
+ };
+ // Note: Correct alignment is not checked by Munger (i.e. the PNaCl
+ // bitcode reader). It is checked later by the PNaCl ABI checker in
+ // pnacl-llc. On the other hand, the DumpMunger checks alignment for
+ // loads while parsing.
+ EXPECT_TRUE(Munger.runTest(
+ "BadLoadAlignment-0", Align0, array_lengthof(Align0), true));
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadLoadAlignment-0", Align0, array_lengthof(Align0)));
+ EXPECT_EQ(
+ " %v0 = load i32* %p0, align 0;\n"
+ "Error(58:4): load: Illegal alignment for i32. Expects: 1\n",
+ DumpMunger.getLinesWithSubstring("load"));
+
+ // Show what happens when changing alignment to 4.
+ const uint64_t Align4[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_LOAD, 1, getEncAlignPower(2), 0, Terminator,
+ };
+ EXPECT_TRUE(Munger.runTest(
+ "BadLoadAlignment-4", Align4, array_lengthof(Align4), true));
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadLoadAlignment-4", Align4, array_lengthof(Align4)));
+ EXPECT_EQ(
+ " %v0 = load i32* %p0, align 4;\n"
+ "Error(58:4): load: Illegal alignment for i32. Expects: 1\n",
+ DumpMunger.getLinesWithSubstring("load"));
+
+ // Show what happens when changing alignment to 2**29.
+ const uint64_t Align29[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_LOAD, 1, getEncAlignPower(29), 0, Terminator,
+ };
+ EXPECT_TRUE(Munger.runTest(
+ "BadLoadAlignment-29", Align29, array_lengthof(Align29), true));
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadLoadAlignment-29", Align29, array_lengthof(Align29)));
+ EXPECT_EQ(
+ " %v0 = load i32* %p0, align 536870912;\n"
+ "Error(58:4): load: Illegal alignment for i32. Expects: 1\n",
+ DumpMunger.getLinesWithSubstring("load"));
+
+ // Show what happens when changing alignment to 2**30.
+ const uint64_t Align30[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_LOAD, 1, getEncAlignPower(30), 0, Terminator,
+ };
+ EXPECT_FALSE(Munger.runTest(
+ "BadLoadAlignment-30", Align30, array_lengthof(Align30), true));
+ EXPECT_EQ(
+ "Error: (46:4) Alignment can't be greater than 2**29. Found: 2**30\n"
+ "Error: Invalid value in record\n",
+ Munger.getTestResults());
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadLoadAlignment-30", Align30, array_lengthof(Align30)));
+ EXPECT_EQ(
+ " %v0 = load i32* %p0, align 0;\n"
+ "Error(58:4): load: Illegal alignment for i32. Expects: 1\n",
+ DumpMunger.getLinesWithSubstring("load"));
+}
+
+// Test how we recognize alignments in store instructions.
+TEST(NaClParseInstsTests, BadStoreAlignment) {
+ const uint64_t BitcodeRecords[] = {
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::MODULE_BLOCK_ID, 2, Terminator,
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::TYPE_BLOCK_ID_NEW, 2, Terminator,
+ 3, naclbitc::TYPE_CODE_NUMENTRY, 3, Terminator,
+ 3, naclbitc::TYPE_CODE_FLOAT, Terminator,
+ 3, naclbitc::TYPE_CODE_INTEGER, 32, Terminator,
+ 3, naclbitc::TYPE_CODE_FUNCTION, 0, 0, 1, 0, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator,
+ 3, naclbitc::MODULE_CODE_FUNCTION, 2, 0, 0, 0, Terminator,
+ 1, naclbitc::BLK_CODE_ENTER, naclbitc::FUNCTION_BLOCK_ID, 2, Terminator,
+ 3, naclbitc::FUNC_CODE_DECLAREBLOCKS, 1, Terminator,
+ 3, naclbitc::FUNC_CODE_INST_STORE, 2, 1, getEncAlignPower(0), Terminator,
+ 3, naclbitc::FUNC_CODE_INST_RET, 1, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator,
+ 0, naclbitc::BLK_CODE_EXIT, Terminator
+ };
+
+ const uint64_t ReplaceIndex = 10; // index for FUNC_CODE_INST_STORE
+
+ // Show text when alignment is 1.
+ NaClObjDumpMunger DumpMunger(BitcodeRecords,
+ array_lengthof(BitcodeRecords), Terminator);
+ EXPECT_TRUE(DumpMunger.runTestForAssembly("BadStoreAlignment"));
+ EXPECT_EQ(
+ "module { // BlockID = 8\n"
+ " types { // BlockID = 17\n"
+ " count 3;\n"
+ " @t0 = float;\n"
+ " @t1 = i32;\n"
+ " @t2 = float (i32, float);\n"
+ " }\n"
+ " define external float @f0(i32, float);\n"
+ " function float @f0(i32 %p0, float %p1) { // BlockID = 12\n"
+ " blocks 1;\n"
+ " %b0:\n"
+ " store float %p1, float* %p0, align 1;\n"
+ " ret float %p1;\n"
+ " }\n"
+ "}\n",
+ DumpMunger.getTestResults());
+ NaClParseBitcodeMunger Munger(BitcodeRecords,
+ array_lengthof(BitcodeRecords), Terminator);
+ EXPECT_TRUE(Munger.runTest("BadStoreAlignment", true));
+
+ // Show what happens when changing alignment to 0.
+ const uint64_t Align0[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_STORE, 2, 1, getEncAlignZero(), Terminator,
+ };
+ // Note: Correct alignment is not checked by Munger (i.e. the PNaCl
+ // bitcode reader). It is checked later by the PNaCl ABI checker in
+ // pnacl-llc. On the other hand, the DumpMunger checks alignment for
+ // stores while parsing.
+ EXPECT_TRUE(Munger.runTest(
+ "BadStoreAlignment-0", Align0, array_lengthof(Align0), true));
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadStoreAlignment-0", Align0, array_lengthof(Align0)));
+ EXPECT_EQ(
+ " store float %p1, float* %p0, align 0;\n"
+ "Error(62:4): store: Illegal alignment for float. Expects: 1 or 4\n",
+ DumpMunger.getLinesWithSubstring("store"));
+
+ // Show what happens when changing alignment to 4.
+ const uint64_t Align4[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_STORE, 2, 1, getEncAlignPower(2), Terminator,
+ };
+ EXPECT_TRUE(Munger.runTest(
+ "BadStoreAlignment-4", Align4, array_lengthof(Align4), true));
+ EXPECT_TRUE(DumpMunger.runTestForAssembly(
+ "BadStoreAlignment-4", Align4, array_lengthof(Align4)));
+
+ // Show what happens when changing alignment to 8.
+ const uint64_t Align8[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_STORE, 2, 1, getEncAlignPower(3), Terminator,
+ };
+ EXPECT_TRUE(Munger.runTest(
+ "BadStoreAlignment-8", Align8, array_lengthof(Align8), true));
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadStoreAlignment-8", Align8, array_lengthof(Align8)));
+ EXPECT_EQ(
+ " store float %p1, float* %p0, align 8;\n"
+ "Error(62:4): store: Illegal alignment for float. Expects: 1 or 4\n",
+ DumpMunger.getLinesWithSubstring("store"));
+
+ // Show what happens when changing alignment to 2**29.
+ const uint64_t Align29[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_STORE, 2, 1, getEncAlignPower(29), Terminator,
+ };
+ EXPECT_TRUE(Munger.runTest(
+ "BadStoreAlignment-29", Align29, array_lengthof(Align29), true));
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadStoreAlignment-29", Align29, array_lengthof(Align29)));
+ EXPECT_EQ(
+ " store float %p1, float* %p0, align 536870912;\n"
+ "Error(62:4): store: Illegal alignment for float. Expects: 1 or 4\n",
+ DumpMunger.getLinesWithSubstring("store"));
+
+ // Show what happens when changing alignment to 2**30.
+ const uint64_t Align30[] = {
+ ReplaceIndex, NaClBitcodeMunger::Replace,
+ 3, naclbitc::FUNC_CODE_INST_STORE, 2, 1, getEncAlignPower(30), Terminator,
+ };
+ EXPECT_FALSE(Munger.runTest(
+ "BadStoreAlignment-30", Align30, array_lengthof(Align30), true));
+ EXPECT_EQ(
+ "Error: (50:4) Alignment can't be greater than 2**29. Found: 2**30\n"
+ "Error: Invalid value in record\n",
+ Munger.getTestResults());
+ EXPECT_FALSE(DumpMunger.runTestForAssembly(
+ "BadStoreAlignment-30", Align30, array_lengthof(Align30)));
+ EXPECT_EQ(
+ " store float %p1, float* %p0, align 0;\n"
+ "Error(62:4): store: Illegal alignment for float. Expects: 1 or 4\n",
+ DumpMunger.getLinesWithSubstring("store"));
+}
+
+} // end of anonamous namespace.
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