.Default(UnknownArch);
}
+// FIXME: Use ARMTargetParser. This would require Triple::arm/thumb
+// to be recogniseable universally.
static Triple::ArchType parseARMArch(StringRef ArchName) {
size_t offset = StringRef::npos;
Triple::ArchType arch = Triple::UnknownArch;
.Default(Triple::UnknownObjectFormat);
}
+// FIXME: Use ARMTargetParser. This would require using Triple::ARMSubArch*
+// in ARMBuildAttrs and in ARCHNames' DefaultArch fields.
static Triple::SubArchType parseSubArch(StringRef SubArchName) {
if (SubArchName.endswith("eb"))
SubArchName = SubArchName.substr(0, SubArchName.size() - 2);
return T;
}
-// FIXME: tblgen this.
+// FIXME: Use ARMTargetParser. This would require ARCHNames to hold
+// specific CPU names, as well as default CPU arch.
const char *Triple::getARMCPUForArch(StringRef MArch) const {
if (MArch.empty())
MArch = getArchName();
break;
}
+ // MArch is expected to be of the form (arm|thumb)?(eb)?(v.+)?(eb)?
+ // Only the (v.+) part is relevant for determining the CPU, as it determines
+ // the architecture version, so we first remove the surrounding parts.
+ // (ep9312|iwmmxt|xscale)(eb)? is also permitted, so we have to be a bit
+ // careful when removing the leading (arm|thumb)?(eb)? as we don't want to
+ // permit things like armep9312.
const char *result = nullptr;
size_t offset = StringRef::npos;
if (MArch.startswith("arm"))
offset = 3;
- if (MArch.startswith("thumb"))
+ else if (MArch.startswith("thumb"))
offset = 5;
if (offset != StringRef::npos && MArch.substr(offset, 2) == "eb")
offset += 2;
- if (MArch.endswith("eb"))
+ else if (MArch.endswith("eb"))
MArch = MArch.substr(0, MArch.size() - 2);
- if (offset != StringRef::npos)
- result = llvm::StringSwitch<const char *>(MArch.substr(offset))
+ if (offset != StringRef::npos && (offset == MArch.size() || MArch[offset] == 'v'))
+ MArch = MArch.substr(offset);
+
+ if (MArch == "") {
+ // If no specific architecture version is requested, return the minimum CPU
+ // required by the OS and environment.
+ 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";
+ }
+ case llvm::Triple::NaCl:
+ return "cortex-a8";
+ default:
+ switch (getEnvironment()) {
+ case llvm::Triple::EABIHF:
+ case llvm::Triple::GNUEABIHF:
+ return "arm1176jzf-s";
+ default:
+ return "arm7tdmi";
+ }
+ }
+ } else {
+ result = llvm::StringSwitch<const char *>(MArch)
.Cases("v2", "v2a", "arm2")
.Case("v3", "arm6")
.Case("v3m", "arm7m")
.Cases("v7em", "v7e-m", "cortex-m4")
.Cases("v8", "v8a", "v8-a", "cortex-a53")
.Cases("v8.1a", "v8.1-a", "generic")
- .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";
- }
- case llvm::Triple::NaCl:
- return "cortex-a8";
- default:
- switch (getEnvironment()) {
- case llvm::Triple::EABIHF:
- case llvm::Triple::GNUEABIHF:
- return "arm1176jzf-s";
- default:
- return "arm7tdmi";
- }
}
+
+ return result;
}