diff options
Diffstat (limited to 'include/llvm/Attributes.h')
| -rw-r--r-- | include/llvm/Attributes.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/llvm/Attributes.h b/include/llvm/Attributes.h index 5cb581a..2b70596 100644 --- a/include/llvm/Attributes.h +++ b/include/llvm/Attributes.h @@ -51,7 +51,8 @@ const Attributes OptimizeForSize = 1<<13; ///< opt_size const Attributes StackProtect = 1<<14; ///< Stack protection. const Attributes StackProtectReq = 1<<15; ///< Stack protection required. const Attributes Alignment = 31<<16; ///< Alignment of parameter (5 bits) - // stored as log2 of alignment. + // stored as log2 of alignment with +1 bias + // 0 means unaligned different from align 1 const Attributes NoCapture = 1<<21; ///< Function creates no aliases of pointer /// @brief Attributes that only apply to function parameters. @@ -79,7 +80,8 @@ Attributes typeIncompatible(const Type *Ty); /// form used internally in Attributes. inline Attributes constructAlignmentFromInt(unsigned i) { assert(isPowerOf2_32(i) && "Alignment must be a power of two."); - return Log2_32(i) << 16; + assert(i <= 0x40000000 && "Alignment too large."); + return (Log2_32(i)+1) << 16; } /// The set of Attributes set in Attributes is converted to a @@ -178,7 +180,7 @@ public: /// getParamAlignment - Return the alignment for the specified function /// parameter. unsigned getParamAlignment(unsigned Idx) const { - return (getAttributes(Idx) & Attribute::Alignment) >> 16; + return 1ull << (((getAttributes(Idx) & Attribute::Alignment) >> 16) - 1); } /// hasAttrSomewhere - Return true if the specified attribute is set for at |