[llvm] r212846 - Move the API and implementation of clang::driver::getARMCPUForMArch() to llvm::Triple::getARMCPUForArch().
Argyrios Kyrtzidis
akyrtzi at gmail.com
Fri Jul 11 14:44:54 PDT 2014
Author: akirtzidis
Date: Fri Jul 11 16:44:54 2014
New Revision: 212846
URL: http://llvm.org/viewvc/llvm-project?rev=212846&view=rev
Log:
Move the API and implementation of clang::driver::getARMCPUForMArch() to llvm::Triple::getARMCPUForArch().
Suggested by Eric Christopher.
Modified:
llvm/trunk/include/llvm/ADT/Triple.h
llvm/trunk/lib/Support/Triple.cpp
llvm/trunk/unittests/ADT/TripleTest.cpp
Modified: llvm/trunk/include/llvm/ADT/Triple.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/Triple.h?rev=212846&r1=212845&r2=212846&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/Triple.h (original)
+++ llvm/trunk/include/llvm/ADT/Triple.h Fri Jul 11 16:44:54 2014
@@ -477,6 +477,12 @@ public:
/// architecture if no such variant can be found.
llvm::Triple get64BitArchVariant() const;
+ /// Get the (LLVM) name of the minimum ARM CPU for the arch we are targeting.
+ ///
+ /// \param Arch the architecture name (e.g., "armv7s"). If it is an empty
+ /// string then the triple's arch name is used.
+ const char* getARMCPUForArch(StringRef Arch = StringRef()) const;
+
/// @}
/// @name Static helpers for IDs.
/// @{
Modified: llvm/trunk/lib/Support/Triple.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Triple.cpp?rev=212846&r1=212845&r2=212846&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Triple.cpp (original)
+++ llvm/trunk/lib/Support/Triple.cpp Fri Jul 11 16:44:54 2014
@@ -930,3 +930,85 @@ Triple Triple::get64BitArchVariant() con
}
return T;
}
+
+// FIXME: tblgen this.
+const char *Triple::getARMCPUForArch(StringRef MArch) const {
+ if (MArch.empty())
+ MArch = getArchName();
+
+ switch (getOS()) {
+ case llvm::Triple::NetBSD:
+ if (MArch == "armv6")
+ return "arm1176jzf-s";
+ break;
+ case llvm::Triple::Win32:
+ // FIXME: this is invalid for WindowsCE
+ return "cortex-a9";
+ default:
+ break;
+ }
+
+ const char *result = nullptr;
+ size_t offset = StringRef::npos;
+ if (MArch.startswith("arm"))
+ offset = 3;
+ if (MArch.startswith("thumb"))
+ offset = 5;
+ if (offset != StringRef::npos && MArch.substr(offset, 2) == "eb")
+ offset += 2;
+ if (offset != StringRef::npos)
+ result = llvm::StringSwitch<const char *>(MArch.substr(offset))
+ .Cases("v2", "v2a", "arm2")
+ .Case("v3", "arm6")
+ .Case("v3m", "arm7m")
+ .Case("v4", "strongarm")
+ .Case("v4t", "arm7tdmi")
+ .Cases("v5", "v5t", "arm10tdmi")
+ .Cases("v5e", "v5te", "arm1022e")
+ .Case("v5tej", "arm926ej-s")
+ .Cases("v6", "v6k", "arm1136jf-s")
+ .Case("v6j", "arm1136j-s")
+ .Cases("v6z", "v6zk", "arm1176jzf-s")
+ .Case("v6t2", "arm1156t2-s")
+ .Cases("v6m", "v6-m", "cortex-m0")
+ .Cases("v7", "v7a", "v7-a", "v7l", "v7-l", "cortex-a8")
+ .Cases("v7s", "v7-s", "swift")
+ .Cases("v7r", "v7-r", "cortex-r4")
+ .Cases("v7m", "v7-m", "cortex-m3")
+ .Cases("v7em", "v7e-m", "cortex-m4")
+ .Cases("v8", "v8a", "v8-a", "cortex-a53")
+ .Default(nullptr);
+ else
+ result = llvm::StringSwitch<const char *>(MArch)
+ .Case("ep9312", "ep9312")
+ .Case("iwmmxt", "iwmmxt")
+ .Case("xscale", "xscale")
+ .Default(nullptr);
+
+ if (result)
+ return result;
+
+ // If all else failed, return the most base CPU with thumb interworking
+ // supported by LLVM.
+ // FIXME: Should warn once that we're falling back.
+ switch (getOS()) {
+ case llvm::Triple::NetBSD:
+ switch (getEnvironment()) {
+ case llvm::Triple::GNUEABIHF:
+ case llvm::Triple::GNUEABI:
+ case llvm::Triple::EABIHF:
+ case llvm::Triple::EABI:
+ return "arm926ej-s";
+ default:
+ return "strongarm";
+ }
+ default:
+ switch (getEnvironment()) {
+ case llvm::Triple::EABIHF:
+ case llvm::Triple::GNUEABIHF:
+ return "arm1176jzf-s";
+ default:
+ return "arm7tdmi";
+ }
+ }
+}
Modified: llvm/trunk/unittests/ADT/TripleTest.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/unittests/ADT/TripleTest.cpp?rev=212846&r1=212845&r2=212846&view=diff
==============================================================================
--- llvm/trunk/unittests/ADT/TripleTest.cpp (original)
+++ llvm/trunk/unittests/ADT/TripleTest.cpp Fri Jul 11 16:44:54 2014
@@ -564,4 +564,16 @@ TEST(TripleTest, NormalizeWindows) {
EXPECT_EQ("i686-pc-windows-elf", Triple::normalize("i686-pc-windows-elf-elf"));
}
+
+TEST(TripleTest, getARMCPUForArch) {
+ {
+ llvm::Triple Triple("armv7s-apple-ios7");
+ EXPECT_STREQ("swift", Triple.getARMCPUForArch());
+ }
+ {
+ llvm::Triple Triple("armv7-apple-ios7");
+ EXPECT_STREQ("cortex-a8", Triple.getARMCPUForArch());
+ EXPECT_STREQ("swift", Triple.getARMCPUForArch("armv7s"));
+ }
+}
}
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