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Add better support for environment portion of triple. Original patch by

Browse Source 
Cameron Esfahani, tweaked to use array_lengthof.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114073 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2010-09-16 08:25:48 +00:00
parent dd2fdd81bc
commit 5754a45256
3 changed files with 74 additions and 7 deletions
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35
include/llvm/ADT/Triple.h
View File

@ -95,6 +95,9 @@ public:
Haiku,
Minix
};
enum EnvironmentType {
UnknownEnvironment
};
private:
std::string Data;
@ -108,10 +111,14 @@ private:
/// The parsed OS type.
mutable OSType OS;
/// The parsed Environment type.
mutable EnvironmentType Environment;
bool isInitialized() const { return Arch != InvalidArch; }
static ArchType ParseArch(StringRef ArchName);
static VendorType ParseVendor(StringRef VendorName);
static OSType ParseOS(StringRef OSName);
static EnvironmentType ParseEnvironment(StringRef EnvironmentName);
void Parse() const;
public:
@ -128,6 +135,17 @@ public:
Data += OSStr;
}
explicit Triple(StringRef ArchStr, StringRef VendorStr, StringRef OSStr,
StringRef EnvironmentStr)
: Data(ArchStr), Arch(InvalidArch) {
Data += '-';
Data += VendorStr;
Data += '-';
Data += OSStr;
Data += '-';
Data += EnvironmentStr;
}
/// @}
/// @name Normalization
/// @{
@ -166,6 +184,12 @@ public:
return getEnvironmentName() != "";
}
/// getEnvironment - Get the parsed environment type of this triple.
EnvironmentType getEnvironment() const {
if (!isInitialized()) Parse();
return Environment;
}
/// @}
/// @name Direct Component Access
/// @{
@ -225,6 +249,10 @@ public:
/// to a known type.
void setOS(OSType Kind);
/// setEnvironment - Set the environment (fourth) component of the triple
/// to a known type.
void setEnvironment(EnvironmentType Kind);
/// setTriple - Set all components to the new triple \arg Str.
void setTriple(const Twine &Str);
@ -272,9 +300,14 @@ public:
/// vendor.
static const char *getVendorTypeName(VendorType Kind);
/// getOSTypeName - Get the canonical name for the \arg Kind vendor.
/// getOSTypeName - Get the canonical name for the \arg Kind operating
/// system.
static const char *getOSTypeName(OSType Kind);
/// getEnvironmentTypeName - Get the canonical name for the \arg Kind
/// environment.
static const char *getEnvironmentTypeName(EnvironmentType Kind);
/// @}
/// @name Static helpers for converting alternate architecture names.
/// @{

38
lib/Support/Triple.cpp
View File

@ -10,6 +10,7 @@
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Twine.h"
#include <cassert>
#include <cstring>
@ -114,6 +115,14 @@ const char *Triple::getOSTypeName(OSType Kind) {
return "<invalid>";
}
const char *Triple::getEnvironmentTypeName(EnvironmentType Kind) {
switch (Kind) {
case UnknownEnvironment: return "unknown";
}
return "<invalid>";
}
Triple::ArchType Triple::getArchTypeForLLVMName(StringRef Name) {
if (Name == "alpha")
return alpha;
@ -329,12 +338,17 @@ Triple::OSType Triple::ParseOS(StringRef OSName) {
return UnknownOS;
}
Triple::EnvironmentType Triple::ParseEnvironment(StringRef EnvironmentName) {
return UnknownEnvironment;
}
void Triple::Parse() const {
assert(!isInitialized() && "Invalid parse call.");
Arch = ParseArch(getArchName());
Vendor = ParseVendor(getVendorName());
OS = ParseOS(getOSName());
Environment = ParseEnvironment(getEnvironmentName());
assert(isInitialized() && "Failed to initialize!");
}
@ -361,24 +375,28 @@ std::string Triple::normalize(StringRef Str) {
OSType OS = UnknownOS;
if (Components.size() > 2)
OS = ParseOS(Components[2]);
EnvironmentType Environment = UnknownEnvironment;
if (Components.size() > 3)
Environment = ParseEnvironment(Components[3]);
// Note which components are already in their final position. These will not
// be moved.
bool Found[3];
bool Found[4];
Found[0] = Arch != UnknownArch;
Found[1] = Vendor != UnknownVendor;
Found[2] = OS != UnknownOS;
Found[3] = Environment != UnknownEnvironment;
// If they are not there already, permute the components into their canonical
// positions by seeing if they parse as a valid architecture, and if so moving
// the component to the architecture position etc.
for (unsigned Pos = 0; Pos != 3; ++Pos) {
for (unsigned Pos = 0; Pos != array_lengthof(Found); ++Pos) {
if (Found[Pos])
continue; // Already in the canonical position.
for (unsigned Idx = 0; Idx != Components.size(); ++Idx) {
// Do not reparse any components that already matched.
if (Idx < 3 && Found[Idx])
if (Idx < array_lengthof(Found) && Found[Idx])
continue;
// Does this component parse as valid for the target position?
@ -399,6 +417,10 @@ std::string Triple::normalize(StringRef Str) {
OS = ParseOS(Comp);
Valid = OS != UnknownOS;
break;
case 3:
Environment = ParseEnvironment(Comp);
Valid = Environment != UnknownEnvironment;
break;
}
if (!Valid)
continue; // Nope, try the next component.
@ -417,7 +439,7 @@ std::string Triple::normalize(StringRef Str) {
// components to the right.
for (unsigned i = Pos; !CurrentComponent.empty(); ++i) {
// Skip over any fixed components.
while (i < 3 && Found[i]) ++i;
while (i < array_lengthof(Found) && Found[i]) ++i;
// Place the component at the new position, getting the component
// that was at this position - it will be moved right.
std::swap(CurrentComponent, Components[i]);
@ -431,7 +453,7 @@ std::string Triple::normalize(StringRef Str) {
StringRef CurrentComponent(""); // The empty component.
for (unsigned i = Idx; i < Components.size(); ++i) {
// Skip over any fixed components.
while (i < 3 && Found[i]) ++i;
while (i < array_lengthof(Found) && Found[i]) ++i;
// Place the component at the new position, getting the component
// that was at this position - it will be moved right.
std::swap(CurrentComponent, Components[i]);
@ -444,7 +466,7 @@ std::string Triple::normalize(StringRef Str) {
Components.push_back(CurrentComponent);
// Advance Idx to the component's new position.
while (++Idx < 3 && Found[Idx]) {}
while (++Idx < array_lengthof(Found) && Found[Idx]) {}
} while (Idx < Pos); // Add more until the final position is reached.
}
assert(Pos < Components.size() && Components[Pos] == Comp &&
@ -574,6 +596,10 @@ void Triple::setOS(OSType Kind) {
setOSName(getOSTypeName(Kind));
}
void Triple::setEnvironment(EnvironmentType Kind) {
setEnvironmentName(getEnvironmentTypeName(Kind));
}
void Triple::setArchName(StringRef Str) {
// Work around a miscompilation bug for Twines in gcc 4.0.3.
SmallString<64> Triple;

8
unittests/ADT/TripleTest.cpp
View File

@ -79,16 +79,21 @@ TEST(TripleTest, ParsedIDs) {
EXPECT_EQ(Triple::x86, T.getArch());
EXPECT_EQ(Triple::Apple, T.getVendor());
EXPECT_EQ(Triple::Darwin, T.getOS());
EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
T = Triple("x86_64-pc-linux-gnu");
EXPECT_EQ(Triple::x86_64, T.getArch());
EXPECT_EQ(Triple::PC, T.getVendor());
EXPECT_EQ(Triple::Linux, T.getOS());
// When environments are defined, change this test to verify the "gnu"
// environment.
EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
T = Triple("powerpc-dunno-notsure");
EXPECT_EQ(Triple::ppc, T.getArch());
EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
EXPECT_EQ(Triple::UnknownOS, T.getOS());
EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
T = Triple("huh");
EXPECT_EQ(Triple::UnknownArch, T.getArch());
@ -119,10 +124,12 @@ TEST(TripleTest, Normalization) {
EXPECT_EQ("i386-b-c", Triple::normalize("i386-b-c"));
EXPECT_EQ("i386-a-c", Triple::normalize("a-i386-c"));
EXPECT_EQ("i386-a-b", Triple::normalize("a-b-i386"));
EXPECT_EQ("i386-a-b-c", Triple::normalize("a-b-c-i386"));
EXPECT_EQ("a-pc-c", Triple::normalize("a-pc-c"));
EXPECT_EQ("-pc-b-c", Triple::normalize("pc-b-c"));
EXPECT_EQ("a-pc-b", Triple::normalize("a-b-pc"));
EXPECT_EQ("a-pc-b-c", Triple::normalize("a-b-c-pc"));
EXPECT_EQ("a-b-linux", Triple::normalize("a-b-linux"));
EXPECT_EQ("--linux-b-c", Triple::normalize("linux-b-c"));
@ -210,6 +217,7 @@ TEST(TripleTest, MutateName) {
EXPECT_EQ(Triple::UnknownArch, T.getArch());
EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
EXPECT_EQ(Triple::UnknownOS, T.getOS());
EXPECT_EQ(Triple::UnknownEnvironment, T.getEnvironment());
T.setArchName("i386");
EXPECT_EQ(Triple::x86, T.getArch());