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Add the value of "suitably aligned" from the C++11 standard to Basic/TargetInfo. 

This is equal to alignof(std::max_align_t) on the platform and equal to the
alignment provided by malloc. (Platform owners please double-check your
platform's value.)

llvm-svn: 146762
This commit is contained in:
Nick Lewycky 2011-12-16 22:34:14 +00:00
parent c0a61734df
commit f59e129c3b
3 changed files with 13 additions and 1 deletions
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5
clang/include/clang/Basic/TargetInfo.h
View File

@ -76,6 +76,7 @@ protected:
unsigned char LargeArrayMinWidth, LargeArrayAlign;
unsigned char LongWidth, LongAlign;
unsigned char LongLongWidth, LongLongAlign;
unsigned char SuitableAlign;
unsigned char MaxAtomicPromoteWidth, MaxAtomicInlineWidth;
const char *DescriptionString;
const char *UserLabelPrefix;
@ -212,6 +213,10 @@ public:
unsigned getLongLongWidth() const { return LongLongWidth; }
unsigned getLongLongAlign() const { return LongLongAlign; }
/// getSuitableAlign - Return the alignment that is suitable for storing any
/// object with a fundamental alignment requirement.
unsigned getSuitableAlign() const { return SuitableAlign; }
/// getWCharWidth/Align - Return the size of 'wchar_t' for this target, in
/// bits.
unsigned getWCharWidth() const { return getTypeWidth(WCharType); }

1
clang/lib/Basic/TargetInfo.cpp
View File

@ -34,6 +34,7 @@ TargetInfo::TargetInfo(const std::string &T) : Triple(T) {
IntWidth = IntAlign = 32;
LongWidth = LongAlign = 32;
LongLongWidth = LongLongAlign = 64;
SuitableAlign = 64;
HalfWidth = 16;
HalfAlign = 16;
FloatWidth = 32;

8
clang/lib/Basic/Targets.cpp
View File

@ -2049,6 +2049,7 @@ public:
DoubleAlign = LongLongAlign = 32;
LongDoubleWidth = 96;
LongDoubleAlign = 32;
SuitableAlign = 32;
DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
"i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-"
"a0:0:64-f80:32:32-n8:16:32-S128";
@ -2098,6 +2099,7 @@ public:
DarwinTargetInfo<X86_32TargetInfo>(triple) {
LongDoubleWidth = 128;
LongDoubleAlign = 128;
SuitableAlign = 128;
SizeType = UnsignedLong;
IntPtrType = SignedLong;
DescriptionString = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
@ -2290,6 +2292,7 @@ public:
LongDoubleAlign = 128;
LargeArrayMinWidth = 128;
LargeArrayAlign = 128;
SuitableAlign = 128;
IntMaxType = SignedLong;
UIntMaxType = UnsignedLong;
Int64Type = SignedLong;
@ -2498,7 +2501,7 @@ public:
// FIXME: We need support for -meabi... we could just mangle it into the
// name.
if (Name == "apcs-gnu") {
DoubleAlign = LongLongAlign = LongDoubleAlign = 32;
DoubleAlign = LongLongAlign = LongDoubleAlign = SuitableAlign = 32;
SizeType = UnsignedLong;
// Revert to using SignedInt on apcs-gnu to comply with existing behaviour.
@ -3087,6 +3090,7 @@ namespace {
LongWidth = 32; LongLongWidth = 64;
LongAlign = LongLongAlign = 16;
PointerWidth = 16; PointerAlign = 16;
SuitableAlign = 16;
SizeType = UnsignedInt;
IntMaxType = SignedLong;
UIntMaxType = UnsignedLong;
@ -3168,6 +3172,7 @@ namespace {
IntAlign = 32;
LongAlign = LongLongAlign = 32;
PointerAlign = 32;
SuitableAlign = 32;
SizeType = UnsignedInt;
IntMaxType = SignedLong;
UIntMaxType = UnsignedLong;
@ -3397,6 +3402,7 @@ public:
PointerWidth = PointerAlign = 64;
LongDoubleWidth = LongDoubleAlign = 128;
LongDoubleFormat = &llvm::APFloat::IEEEquad;
SuitableAlign = 128;
}
virtual bool setABI(const std::string &Name) {
SetDescriptionString(Name);