[llvm] 4b60e1e - [RISCV] Add function that check extension name with version
Piyou Chen via llvm-commits
llvm-commits at lists.llvm.org
Sun Aug 20 21:07:02 PDT 2023
Author: Piyou Chen
Date: 2023-08-20T21:06:57-07:00
New Revision: 4b60e1e821b4515466c95082839aecc5c36f19e2
URL: https://github.com/llvm/llvm-project/commit/4b60e1e821b4515466c95082839aecc5c36f19e2
DIFF: https://github.com/llvm/llvm-project/commit/4b60e1e821b4515466c95082839aecc5c36f19e2.diff
LOG: [RISCV] Add function that check extension name with version
Check whether a extension string with version is valid, and get the targetfeature from it.
New functions be used in RISCVISAInfo for https://reviews.llvm.org/D151730.
Reviewed By: craig.topper
Differential Revision: https://reviews.llvm.org/D152423
Added:
Modified:
llvm/include/llvm/Support/RISCVISAInfo.h
llvm/lib/Support/RISCVISAInfo.cpp
llvm/unittests/Support/RISCVISAInfoTest.cpp
Removed:
################################################################################
diff --git a/llvm/include/llvm/Support/RISCVISAInfo.h b/llvm/include/llvm/Support/RISCVISAInfo.h
index 6eb085c32b5b2f..8cbee6732e7bd3 100644
--- a/llvm/include/llvm/Support/RISCVISAInfo.h
+++ b/llvm/include/llvm/Support/RISCVISAInfo.h
@@ -85,10 +85,12 @@ class RISCVISAInfo {
static bool isSupportedExtensionFeature(StringRef Ext);
static bool isSupportedExtension(StringRef Ext);
+ static bool isSupportedExtensionWithVersion(StringRef Ext);
static bool isSupportedExtension(StringRef Ext, unsigned MajorVersion,
unsigned MinorVersion);
static llvm::Expected<std::unique_ptr<RISCVISAInfo>>
postProcessAndChecking(std::unique_ptr<RISCVISAInfo> &&ISAInfo);
+ static std::string getTargetFeatureForExtension(StringRef Ext);
private:
RISCVISAInfo(unsigned XLen)
diff --git a/llvm/lib/Support/RISCVISAInfo.cpp b/llvm/lib/Support/RISCVISAInfo.cpp
index beead952f3f6e4..2025edc8dce388 100644
--- a/llvm/lib/Support/RISCVISAInfo.cpp
+++ b/llvm/lib/Support/RISCVISAInfo.cpp
@@ -1253,3 +1253,40 @@ StringRef RISCVISAInfo::computeDefaultABI() const {
}
llvm_unreachable("Invalid XLEN");
}
+
+bool RISCVISAInfo::isSupportedExtensionWithVersion(StringRef Ext) {
+ if (Ext.empty())
+ return false;
+
+ auto Pos = findLastNonVersionCharacter(Ext) + 1;
+ StringRef Name = Ext.substr(0, Pos);
+ StringRef Vers = Ext.substr(Pos);
+ if (Vers.empty())
+ return false;
+
+ unsigned Major, Minor, ConsumeLength;
+ if (auto E = getExtensionVersion(Name, Vers, Major, Minor, ConsumeLength,
+ true, true)) {
+ consumeError(std::move(E));
+ return false;
+ }
+
+ return true;
+}
+
+std::string RISCVISAInfo::getTargetFeatureForExtension(StringRef Ext) {
+ if (Ext.empty())
+ return std::string();
+
+ auto Pos = findLastNonVersionCharacter(Ext) + 1;
+ StringRef Name = Ext.substr(0, Pos);
+
+ if (Pos != Ext.size() && !isSupportedExtensionWithVersion(Ext))
+ return std::string();
+
+ if (!isSupportedExtension(Name))
+ return std::string();
+
+ return isExperimentalExtension(Name) ? "experimental-" + Name.str()
+ : Name.str();
+}
diff --git a/llvm/unittests/Support/RISCVISAInfoTest.cpp b/llvm/unittests/Support/RISCVISAInfoTest.cpp
index 8e6e4b55d7c386..5c73799397eaa1 100644
--- a/llvm/unittests/Support/RISCVISAInfoTest.cpp
+++ b/llvm/unittests/Support/RISCVISAInfoTest.cpp
@@ -604,3 +604,25 @@ TEST(ParseArchString, ZceImplication) {
EXPECT_EQ(ExtsRV64IDZce.count("zcmp"), 1U);
EXPECT_EQ(ExtsRV64IDZce.count("zcmt"), 1U);
}
+
+TEST(isSupportedExtensionWithVersion, AcceptsSingleExtensionWithVersion) {
+ EXPECT_TRUE(RISCVISAInfo::isSupportedExtensionWithVersion("zbb1p0"));
+ EXPECT_FALSE(RISCVISAInfo::isSupportedExtensionWithVersion("zbb"));
+ EXPECT_FALSE(RISCVISAInfo::isSupportedExtensionWithVersion("zfoo1p0"));
+ EXPECT_FALSE(RISCVISAInfo::isSupportedExtensionWithVersion("zfoo"));
+ EXPECT_FALSE(RISCVISAInfo::isSupportedExtensionWithVersion(""));
+ EXPECT_FALSE(RISCVISAInfo::isSupportedExtensionWithVersion("c2p0zbb1p0"));
+}
+
+TEST(getTargetFeatureForExtension, RetrieveTargetFeatureFromOneExt) {
+ EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zbb"), "zbb");
+ EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zicond1p0"),
+ "experimental-zicond");
+ EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zicond"),
+ "experimental-zicond");
+ EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zihintntl1234p4321"),
+ "");
+ EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zfoo"), "");
+ EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension(""), "");
+ EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zbbzihintntl"), "");
+}
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