maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Update BitcodeWriter to match recent Triple changes. rdar://9603399 

llvm-svn: 132959
This commit is contained in:
Evan Cheng 2011-06-14 01:51:33 +00:00
parent bc7483f505
commit cffdcae2fe
1 changed files with 12 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -23,6 +23,7 @@
#include "llvm/Operator.h"
#include "llvm/TypeSymbolTable.h"
#include "llvm/ValueSymbolTable.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
@ -1543,40 +1544,7 @@ enum {
DarwinBCHeaderSize = 5*4
};
/// isARMTriplet - Return true if the triplet looks like:
/// arm-*, thumb-*, armv[0-9]-*, thumbv[0-9]-*, armv5te-*, or armv6t2-*.
static bool isARMTriplet(const std::string &TT) {
size_t Pos = 0;
size_t Size = TT.size();
if (Size >= 6 &&
TT[0] == 't' && TT[1] == 'h' && TT[2] == 'u' &&
TT[3] == 'm' && TT[4] == 'b')
Pos = 5;
else if (Size >= 4 && TT[0] == 'a' && TT[1] == 'r' && TT[2] == 'm')
Pos = 3;
else
return false;
if (TT[Pos] == '-')
return true;
else if (TT[Pos] == 'v') {
if (Size >= Pos+4 &&
TT[Pos+1] == '6' && TT[Pos+2] == 't' && TT[Pos+3] == '2')
return true;
else if (Size >= Pos+4 &&
TT[Pos+1] == '5' && TT[Pos+2] == 't' && TT[Pos+3] == 'e')
return true;
} else
return false;
while (++Pos < Size && TT[Pos] != '-') {
if (!isdigit(TT[Pos]))
return false;
}
return true;
}
static void EmitDarwinBCHeader(BitstreamWriter &Stream,
const std::string &TT) {
static void EmitDarwinBCHeader(BitstreamWriter &Stream, const Triple &TT) {
unsigned CPUType = ~0U;
// Match x86_64-*, i[3-9]86-*, powerpc-*, powerpc64-*, arm-*, thumb-*,
@ -1590,16 +1558,16 @@ static void EmitDarwinBCHeader(BitstreamWriter &Stream,
DARWIN_CPU_TYPE_POWERPC = 18
};
if (TT.find("x86_64-") == 0)
Triple::ArchType Arch = TT.getArch();
if (Arch == Triple::x86_64)
CPUType = DARWIN_CPU_TYPE_X86 | DARWIN_CPU_ARCH_ABI64;
else if (TT.size() >= 5 && TT[0] == 'i' && TT[2] == '8' && TT[3] == '6' &&
TT[4] == '-' && TT[1] - '3' < 6)
else if (Arch == Triple::x86)
CPUType = DARWIN_CPU_TYPE_X86;
else if (TT.find("powerpc-") == 0)
else if (Arch == Triple::ppc)
CPUType = DARWIN_CPU_TYPE_POWERPC;
else if (TT.find("powerpc64-") == 0)
else if (Arch == Triple::ppc64)
CPUType = DARWIN_CPU_TYPE_POWERPC | DARWIN_CPU_ARCH_ABI64;
else if (isARMTriplet(TT))
else if (Arch == Triple::arm || Arch == Triple::thumb)
CPUType = DARWIN_CPU_TYPE_ARM;
// Traditional Bitcode starts after header.
@ -1645,11 +1613,9 @@ void llvm::WriteBitcodeToFile(const Module *M, raw_ostream &Out) {
void llvm::WriteBitcodeToStream(const Module *M, BitstreamWriter &Stream) {
// If this is darwin or another generic macho target, emit a file header and
// trailer if needed.
bool isMacho =
M->getTargetTriple().find("-darwin") != std::string::npos ||
M->getTargetTriple().find("-macho") != std::string::npos;
if (isMacho)
EmitDarwinBCHeader(Stream, M->getTargetTriple());
Triple TT(M->getTargetTriple());
if (TT.isOSDarwin())
EmitDarwinBCHeader(Stream, TT);
// Emit the file header.
Stream.Emit((unsigned)'B', 8);
@ -1662,6 +1628,6 @@ void llvm::WriteBitcodeToStream(const Module *M, BitstreamWriter &Stream) {
// Emit the module.
WriteModule(M, Stream);
if (isMacho)
if (TT.isOSDarwin())
EmitDarwinBCTrailer(Stream, Stream.getBuffer().size());
}