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Take advantage of Triple and TargetData.

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A lot of system specific knowledge is already present in LLVM. This is used to populate several fields in global.params instead of hard coded values in main(). Ensures that the frontend and LLVM have always the same values.
This commit is contained in:
kai
2012-09-16 19:50:21 +02:00
parent 98f9742db5
commit 940d6e907f
7 changed files with 84 additions and 94 deletions
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96
driver/main.cpp
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@@ -498,7 +498,7 @@ int main(int argc, char** argv)
triple = llvm::Triple::normalize(mTargetTriple);
}
global.params.targetTriple = triple.c_str();
global.params.targetTriple = llvm::Triple(triple);
// Allocate target machine.
const llvm::Target *theTarget = NULL;
@@ -566,54 +566,41 @@ int main(int argc, char** argv)
gTargetData = target->getTargetData();
global.params.llvmArch = theTarget->getName();
global.params.isLE = gTargetData->isLittleEndian();
// Starting with LLVM 3.1 we could also use global.params.targetTriple.isArch64Bit();
global.params.is64bit = gTargetData->getPointerSizeInBits() == 64;
global.params.cpu = static_cast<ARCH>(global.params.targetTriple.getArch());
global.params.os = static_cast<OS>(global.params.targetTriple.getOS());
if (strcmp(global.params.llvmArch,"x86")==0) {
VersionCondition::addPredefinedGlobalIdent("X86");
global.params.isLE = true;
global.params.is64bit = false;
global.params.cpu = ARCHx86;
if (global.params.useInlineAsm) {
VersionCondition::addPredefinedGlobalIdent("D_InlineAsm_X86");
}
}
else if (strcmp(global.params.llvmArch,"x86-64")==0) {
VersionCondition::addPredefinedGlobalIdent("X86_64");
global.params.isLE = true;
global.params.is64bit = true;
global.params.cpu = ARCHx86_64;
if (global.params.useInlineAsm) {
VersionCondition::addPredefinedGlobalIdent("D_InlineAsm_X86_64");
}
}
else if (strcmp(global.params.llvmArch,"ppc32")==0) {
VersionCondition::addPredefinedGlobalIdent("PPC");
global.params.isLE = false;
global.params.is64bit = false;
global.params.cpu = ARCHppc;
}
else if (strcmp(global.params.llvmArch,"ppc64")==0) {
VersionCondition::addPredefinedGlobalIdent("PPC64");
global.params.isLE = false;
global.params.is64bit = true;
global.params.cpu = ARCHppc_64;
}
else if (strcmp(global.params.llvmArch,"arm")==0) {
VersionCondition::addPredefinedGlobalIdent("ARM");
global.params.isLE = true;
global.params.is64bit = false;
global.params.cpu = ARCHarm;
}
else if (strcmp(global.params.llvmArch,"thumb")==0) {
VersionCondition::addPredefinedGlobalIdent("ARM");
VersionCondition::addPredefinedGlobalIdent("Thumb");
global.params.isLE = true;
global.params.is64bit = false;
global.params.cpu = ARCHthumb;
}
else {
error("invalid cpu architecture specified: %s", global.params.llvmArch);
fatal();
switch (global.params.targetTriple.getArch())
{
case llvm::Triple::x86:
VersionCondition::addPredefinedGlobalIdent("X86");
if (global.params.useInlineAsm) {
VersionCondition::addPredefinedGlobalIdent("D_InlineAsm_X86");
}
break;
case llvm::Triple::x86_64:
VersionCondition::addPredefinedGlobalIdent("X86_64");
if (global.params.useInlineAsm) {
VersionCondition::addPredefinedGlobalIdent("D_InlineAsm_X86_64");
}
break;
case llvm::Triple::ppc:
VersionCondition::addPredefinedGlobalIdent("PPC");
break;
case llvm::Triple::ppc64:
VersionCondition::addPredefinedGlobalIdent("PPC64");
break;
case llvm::Triple::arm:
VersionCondition::addPredefinedGlobalIdent("ARM");
case llvm::Triple::thumb:
VersionCondition::addPredefinedGlobalIdent("ARM");
VersionCondition::addPredefinedGlobalIdent("Thumb");
break;
default:
error("invalid cpu architecture specified: %s", global.params.targetTriple.getArchName().str().c_str());
fatal();
}
// endianness
@@ -638,10 +625,9 @@ int main(int argc, char** argv)
// parse the OS out of the target triple
// see http://gcc.gnu.org/install/specific.html for details
// also llvm's different SubTargets have useful information
switch (llvm::Triple(triple).getOS())
switch (global.params.targetTriple.getOS())
{
case llvm::Triple::Win32:
global.params.os = OSWindows;
VersionCondition::addPredefinedGlobalIdent("Windows");
VersionCondition::addPredefinedGlobalIdent("Win32");
if (global.params.is64bit) {
@@ -649,7 +635,7 @@ int main(int argc, char** argv)
}
break;
case llvm::Triple::MinGW32:
global.params.os = OSWindows;
global.params.os = OSWindows; // FIXME: Check source for uses of MinGW32
VersionCondition::addPredefinedGlobalIdent("Windows");
VersionCondition::addPredefinedGlobalIdent("Win32");
VersionCondition::addPredefinedGlobalIdent("mingw32");
@@ -663,35 +649,31 @@ int main(int argc, char** argv)
fatal();
break;
case llvm::Triple::Linux:
global.params.os = OSLinux;
VersionCondition::addPredefinedGlobalIdent("linux");
VersionCondition::addPredefinedGlobalIdent("Posix");
break;
case llvm::Triple::Haiku:
global.params.os = OSHaiku;
VersionCondition::addPredefinedGlobalIdent("Haiku");
VersionCondition::addPredefinedGlobalIdent("Posix");
break;
case llvm::Triple::Darwin:
global.params.os = OSMacOSX;
global.params.os = OSMacOSX; // FIXME: Do we need to distinguish between Darwin and MacOSX?
VersionCondition::addPredefinedGlobalIdent("OSX");
VersionCondition::addPredefinedGlobalIdent("darwin");
VersionCondition::addPredefinedGlobalIdent("Posix");
break;
case llvm::Triple::FreeBSD:
global.params.os = OSFreeBSD;
VersionCondition::addPredefinedGlobalIdent("freebsd");
VersionCondition::addPredefinedGlobalIdent("FreeBSD");
VersionCondition::addPredefinedGlobalIdent("Posix");
break;
case llvm::Triple::Solaris:
global.params.os = OSSolaris;
VersionCondition::addPredefinedGlobalIdent("solaris");
VersionCondition::addPredefinedGlobalIdent("Solaris");
VersionCondition::addPredefinedGlobalIdent("Posix");
break;
default:
error("target '%s' is not yet supported", global.params.targetTriple);
error("target '%s' is not yet supported", global.params.targetTriple.str().c_str());
fatal();
}