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Generalize stdint.h for non-8-bit-multiple types, patch by

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Ken Dyck!

"This adds definitions for types of 8-bit multiples
from 8 to 64 to stdint.h and rationalizes the selection of types 
for the exact-width definitions in InitPreprocessor.cpp."

llvm-svn: 86977
This commit is contained in:
Chris Lattner
2009-11-12 08:08:27 +00:00
parent 0fb5bbd401
commit 55c9877b66
4 changed files with 573 additions and 143 deletions
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39
clang/lib/Frontend/InitPreprocessor.cpp
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@@ -237,6 +237,12 @@ static void DefineType(const char *MacroName, TargetInfo::IntType Ty,
DefineBuiltinMacro(Buf, MacroBuf);
}
static void DefineExactWidthIntType(TargetInfo::IntType Ty,
const TargetInfo &TI, std::vector<char> &Buf) {
char MacroBuf[60];
sprintf(MacroBuf, "__INT%d_TYPE__", TI.getTypeWidth(Ty));
DefineType(MacroBuf, Ty, Buf);
}
static void InitializePredefinedMacros(const TargetInfo &TI,
const LangOptions &LangOpts,
@@ -386,25 +392,22 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
if (!LangOpts.CharIsSigned)
DefineBuiltinMacro(Buf, "__CHAR_UNSIGNED__");
// Define fixed-sized integer types for stdint.h
assert(TI.getCharWidth() == 8 && "unsupported target types");
assert(TI.getShortWidth() == 16 && "unsupported target types");
DefineBuiltinMacro(Buf, "__INT8_TYPE__=char");
DefineType("__INT16_TYPE__", TargetInfo::SignedShort, Buf);
TargetInfo::IntType Int32Type;
if (TI.getIntWidth() == 32)
Int32Type = TargetInfo::SignedInt;
else {
assert(TI.getLongLongWidth() == 32 && "unsupported target types");
Int32Type = TargetInfo::SignedLongLong;
}
DefineType("__INT32_TYPE__", Int32Type, Buf);
// 16-bit targets doesn't necessarily have a 64-bit type.
if (TI.getLongLongWidth() == 64)
DefineType("__INT64_TYPE__", TI.getInt64Type(), Buf);
// Define exact-width integer types for stdint.h
sprintf(MacroBuf, "__INT%d_TYPE__=char", TI.getCharWidth());
DefineBuiltinMacro(Buf, MacroBuf);
if (TI.getShortWidth() > TI.getCharWidth())
DefineExactWidthIntType(TargetInfo::SignedShort, TI, Buf);
if (TI.getIntWidth() > TI.getShortWidth())
DefineExactWidthIntType(TargetInfo::SignedInt, TI, Buf);
if (TI.getLongWidth() > TI.getIntWidth())
DefineExactWidthIntType(TargetInfo::SignedLong, TI, Buf);
if (TI.getLongLongWidth() > TI.getLongWidth())
DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Buf);
// Add __builtin_va_list typedef.
{
const char *VAList = TI.getVAListDeclaration();