fix: Better IR file format ext handling

This fix makes ocloc honor IR file format when picking
extension for the output file.
Additionally, this commit removes reduntant IR output when
compiling from IR.

Related-To: NEO-15876

Signed-off-by: Chodor, Jaroslaw <jaroslaw.chodor@intel.com>

opencl/test/unit_test/offline_compiler/offline_compiler_tests.cpp

@@ -5840,6 +5840,7 @@ TEST_F(OfflineCompilerTests, GivenDebugFlagWhenBuildingFromSourceThenTemporarySo
     std::string expectedSOption = "-s \"" + expectedTempFilePath.string() + "\"";
     EXPECT_TRUE(CompilerOptions::contains(mockOfflineCompiler.options, expectedSOption));
 }
+
 TEST_F(OfflineCompilerTests, GivenSpirvInputAndSpecConstFileWhenFileExistsThenSpecializationConstantsAreLoaded) {
     MockOfflineCompiler mockOfflineCompiler;
     mockOfflineCompiler.uniqueHelper->filesMap = filesMap;
@@ -6391,4 +6392,34 @@ TEST_F(OfflineCompilerTests, givenMixedValidFormatsInDeviceOptionsWhenParsingThe
     EXPECT_NE(mockOfflineCompiler->perDeviceOptions.end(),
               mockOfflineCompiler->perDeviceOptions.find(ipVersion));
 }
+
+TEST(OclocOutputFileExtensions, GivenKnownFileFormatTheChooseProperExtension) {
+    using namespace IGC::CodeType;
+    std::pair<IGC::CodeType::CodeType_t, const char *> expectedExts[] = {
+        {llvmLl, ".ll"},
+        {llvmBc, ".bc"},
+        {spirV, ".spv"},
+        {oclC, ".cl"},
+        {oclCpp, ".cl"},
+        {oclGenBin, ".bin"},
+        {elf, ".bin"},
+        {undefined, ".bin"},
+        {invalid, ".bin"}};
+
+    for (const auto &[codeType, expectedExt] : expectedExts) {
+        auto ext = NEO::getFileExtension(codeType);
+        EXPECT_STREQ(expectedExt, ext.c_str());
+    }
+}
+
+TEST(OclocOutputFileExtensions, GivenCustomFileFormatThenUseItAsExtension) {
+    auto customCodeType = IGC::CodeType::CodeTypeCoder::Enc("TXT");
+    auto ext = NEO::getFileExtension(customCodeType);
+    EXPECT_STREQ(".txt", ext.c_str());
+
+    customCodeType = IGC::CodeType::CodeTypeCoder::Enc("MD");
+    ext = NEO::getFileExtension(customCodeType);
+    EXPECT_STREQ(".md", ext.c_str());
+}
+
 } // namespace NEO

shared/offline_compiler/source/offline_compiler.cpp

@@ -1769,7 +1769,7 @@ void OfflineCompiler::writeOutAllFiles() {
         return;
     }
 
-    if (irBinary && (this->inputCodeType != IGC::CodeType::spirV)) {
+    if (irBinary && (this->inputCodeType == IGC::CodeType::oclC)) {
         std::string irOutputFileName = generateFilePathForIr(fileBase) + generateOptsSuffix();
 
         argHelper->saveOutput(irOutputFileName, irBinary, irBinarySize);

shared/offline_compiler/source/offline_compiler.h

@@ -11,6 +11,7 @@
 #include "shared/source/compiler_interface/compiler_options.h"
 #include "shared/source/helpers/hw_info.h"
 #include "shared/source/helpers/non_copyable_or_moveable.h"
+#include "shared/source/helpers/string_helpers.h"
 #include "shared/source/utilities/arrayref.h"
 #include "shared/source/utilities/const_stringref.h"
 
@@ -51,9 +52,14 @@ constexpr bool isIntermediateRepresentation(IGC::CodeType::CodeType_t codeType)
     return false == ((IGC::CodeType::oclC == codeType) || (IGC::CodeType::oclCpp == codeType) || (IGC::CodeType::oclGenBin == codeType));
 }
 
-constexpr const char *getFileExtension(IGC::CodeType::CodeType_t codeType) {
+inline std::string getFileExtension(IGC::CodeType::CodeType_t codeType) {
     switch (codeType) {
     default:
+        return "." + StringHelpers::toLower(IGC::CodeType::CodeTypeCoder::Dec(codeType));
+    case IGC::CodeType::oclGenBin:
+    case IGC::CodeType::elf:
+    case IGC::CodeType::undefined:
+    case IGC::CodeType::invalid:
         return ".bin";
     case IGC::CodeType::llvmBc:
         return ".bc";
@@ -61,6 +67,10 @@ constexpr const char *getFileExtension(IGC::CodeType::CodeType_t codeType) {
         return ".ll";
     case IGC::CodeType::spirV:
         return ".spv";
+    case IGC::CodeType::oclC:
+        return ".cl";
+    case IGC::CodeType::oclCpp:
+        return ".cl";
     }
 }
 
@@ -187,8 +197,8 @@ All supported acronyms: %s.
     void updateBuildLog(const char *pErrorString, const size_t errorStringSize);
     MOCKABLE_VIRTUAL bool generateElfBinary();
     std::string generateFilePathForIr(const std::string &fileNameBase) {
-        const char *ext = getFileExtension(intermediateRepresentation);
-        return generateFilePath(outputDirectory, fileNameBase, ext);
+        auto ext = getFileExtension(intermediateRepresentation);
+        return generateFilePath(outputDirectory, fileNameBase, ext.c_str());
     }
 
     std::string generateOptsSuffix() {

shared/source/helpers/string_helpers.h

@@ -10,6 +10,7 @@
 
 #include "CL/cl.h"
 
+#include <algorithm>
 #include <cstdint>
 #include <cstring>
 #include <string>
@@ -83,4 +84,14 @@ inline std::vector<std::string> split(const std::string &input, const char *deli
 inline uint32_t toUint32t(const std::string &input) {
     return static_cast<uint32_t>(std::stoul(input, nullptr, 0));
 }
+
+inline void toLowerInPlace(std::string &src) {
+    std::transform(src.begin(), src.end(), src.begin(), [](unsigned char c) { return std::tolower(c); });
+}
+
+inline std::string toLower(const std::string &src) {
+    std::string ret = src;
+    toLowerInPlace(ret);
+    return ret;
+}
 } // namespace StringHelpers

shared/test/unit_test/helpers/string_to_hash_tests.cpp

@@ -12,6 +12,11 @@
 
 using NEO::Hash;
 
+TEST(ToLower, GiventStringThenChangeItToLowerCase) {
+    std::string ls = StringHelpers::toLower("SomeTEXT");
+    EXPECT_STREQ("sometext", ls.c_str());
+}
+
 TEST(CreateCombinedStrings, GivenSingleStringWhenCreatingCombinedStringThenDstStringMatchesSrcString) {
     std::string dstString;
     size_t dstStringSizeInBytes = 0;