本文整理汇总了C++中CodeGenFunction::EmitAlignmentAssumption方法的典型用法代码示例。如果您正苦于以下问题:C++ CodeGenFunction::EmitAlignmentAssumption方法的具体用法?C++ CodeGenFunction::EmitAlignmentAssumption怎么用?C++ CodeGenFunction::EmitAlignmentAssumption使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CodeGenFunction
的用法示例。
在下文中一共展示了CodeGenFunction::EmitAlignmentAssumption方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: EmitOMPAlignedClause
static void EmitOMPAlignedClause(CodeGenFunction &CGF, CodeGenModule &CGM,
const OMPAlignedClause &Clause) {
unsigned ClauseAlignment = 0;
if (auto AlignmentExpr = Clause.getAlignment()) {
auto AlignmentCI =
cast<llvm::ConstantInt>(CGF.EmitScalarExpr(AlignmentExpr));
ClauseAlignment = static_cast<unsigned>(AlignmentCI->getZExtValue());
}
for (auto E : Clause.varlists()) {
unsigned Alignment = ClauseAlignment;
if (Alignment == 0) {
// OpenMP [2.8.1, Description]
// If no optional parameter is specified, implementation-defined default
// alignments for SIMD instructions on the target platforms are assumed.
Alignment = CGM.getTargetCodeGenInfo().getOpenMPSimdDefaultAlignment(
E->getType());
}
assert((Alignment == 0 || llvm::isPowerOf2_32(Alignment)) &&
"alignment is not power of 2");
if (Alignment != 0) {
llvm::Value *PtrValue = CGF.EmitScalarExpr(E);
CGF.EmitAlignmentAssumption(PtrValue, Alignment);
}
}
}