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Shrink TargetAlignElem a bit, we do a lot of searches on them.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164897 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-09-29 19:57:14 +00:00
parent b67c9a5b02
commit 01e872af25
2 changed files with 6 additions and 4 deletions
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8
include/llvm/Target/TargetData.h
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@ -53,10 +53,10 @@ enum AlignTypeEnum {
/// @note The unusual order of elements in the structure attempts to reduce
/// padding and make the structure slightly more cache friendly.
struct TargetAlignElem {
AlignTypeEnum AlignType : 8; ///< Alignment type (AlignTypeEnum)
unsigned ABIAlign; ///< ABI alignment for this type/bitw
unsigned PrefAlign; ///< Pref. alignment for this type/bitw
uint32_t TypeBitWidth; ///< Type bit width
uint32_t AlignType : 8; ///< Alignment type (AlignTypeEnum)
uint32_t TypeBitWidth : 24; ///< Type bit width
uint32_t ABIAlign : 16; ///< ABI alignment for this type/bitw
uint32_t PrefAlign : 16; ///< Pref. alignment for this type/bitw
/// Initializer
static TargetAlignElem get(AlignTypeEnum align_type, unsigned abi_align,

2
lib/Target/TargetData.cpp
View File

@ -314,6 +314,8 @@ void
TargetData::setAlignment(AlignTypeEnum align_type, unsigned abi_align,
unsigned pref_align, uint32_t bit_width) {
assert(abi_align <= pref_align && "Preferred alignment worse than ABI!");
assert(pref_align < (1 << 16) && "Alignment doesn't fit in bitfield");
assert(bit_width < (1 << 24) && "Bit width doesn't fit in bitfield");
for (unsigned i = 0, e = Alignments.size(); i != e; ++i) {
if (Alignments[i].AlignType == align_type &&
Alignments[i].TypeBitWidth == bit_width) {