diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCSubtarget.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCSubtarget.cpp | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/lib/Target/PowerPC/PPCSubtarget.cpp b/lib/Target/PowerPC/PPCSubtarget.cpp index 107b9897d5..899a27b74a 100644 --- a/lib/Target/PowerPC/PPCSubtarget.cpp +++ b/lib/Target/PowerPC/PPCSubtarget.cpp @@ -32,6 +32,41 @@ using namespace llvm; #define GET_SUBTARGETINFO_CTOR #include "PPCGenSubtargetInfo.inc" +/// Return the datalayout string of a subtarget. +static std::string getDataLayoutString(const PPCSubtarget &ST) { + const Triple &T = ST.getTargetTriple(); + + std::string Ret; + + // Most PPC* platforms are big endian, PPC64LE is little endian. + if (ST.isLittleEndian()) + Ret = "e"; + else + Ret = "E"; + + Ret += DataLayout::getManglingComponent(T); + + // PPC32 has 32 bit pointers. The PS3 (OS Lv2) is a PPC64 machine with 32 bit + // pointers. + if (!ST.isPPC64() || T.getOS() == Triple::Lv2) + Ret += "-p:32:32"; + + // Note, the alignment values for f64 and i64 on ppc64 in Darwin + // documentation are wrong; these are correct (i.e. "what gcc does"). + if (ST.isPPC64() || ST.isSVR4ABI()) + Ret += "-i64:64"; + else + Ret += "-f64:32:64"; + + // PPC64 has 32 and 64 bit registers, PPC32 has only 32 bit ones. + if (ST.isPPC64()) + Ret += "-n32:64"; + else + Ret += "-n32"; + + return Ret; +} + PPCSubtarget &PPCSubtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) { initializeEnvironment(); @@ -44,7 +79,8 @@ PPCSubtarget::PPCSubtarget(const std::string &TT, const std::string &CPU, CodeGenOpt::Level OptLevel) : PPCGenSubtargetInfo(TT, CPU, FS), IsPPC64(is64Bit), TargetTriple(TT), OptLevel(OptLevel), - FrameLowering(initializeSubtargetDependencies(CPU, FS)) {} + FrameLowering(initializeSubtargetDependencies(CPU, FS)), + DL(getDataLayoutString(*this)) {} /// SetJITMode - This is called to inform the subtarget info that we are /// producing code for the JIT. |