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Add foreach_active iteration statement.

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Issue #298.
This commit is contained in:
Matt Pharr
2012-06-22 10:35:43 -07:00
parent ed13dd066b
commit b4a078e2f6
15 changed files with 644 additions and 279 deletions
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17
ast.cpp
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@@ -92,6 +92,7 @@ WalkAST(ASTNode *node, ASTPreCallBackFunc preFunc, ASTPostCallBackFunc postFunc,
DoStmt *dos;
ForStmt *fs;
ForeachStmt *fes;
ForeachActiveStmt *fas;
ForeachUniqueStmt *fus;
CaseStmt *cs;
DefaultStmt *defs;
@@ -138,6 +139,9 @@ WalkAST(ASTNode *node, ASTPreCallBackFunc preFunc, ASTPostCallBackFunc postFunc,
postFunc, data);
fes->stmts = (Stmt *)WalkAST(fes->stmts, preFunc, postFunc, data);
}
else if ((fas = dynamic_cast<ForeachActiveStmt *>(node)) != NULL) {
fas->stmts = (Stmt *)WalkAST(fas->stmts, preFunc, postFunc, data);
}
else if ((fus = dynamic_cast<ForeachUniqueStmt *>(node)) != NULL) {
fus->expr = (Expr *)WalkAST(fus->expr, preFunc, postFunc, data);
fus->stmts = (Stmt *)WalkAST(fus->stmts, preFunc, postFunc, data);
@@ -391,14 +395,15 @@ lCheckAllOffSafety(ASTNode *node, void *data) {
}
if (dynamic_cast<ForeachStmt *>(node) != NULL ||
dynamic_cast<ForeachActiveStmt *>(node) != NULL ||
dynamic_cast<ForeachUniqueStmt *>(node) != NULL) {
// foreach() statements also shouldn't be run with an all-off mask.
// Since they re-establish an 'all on' mask, this would be pretty
// unintuitive. (More generally, it's possibly a little strange to
// allow foreach() in the presence of any non-uniform control
// flow...)
// The various foreach statements also shouldn't be run with an
// all-off mask. Since they can re-establish an 'all on' mask,
// this would be pretty unintuitive. (More generally, it's
// possibly a little strange to allow foreach in the presence of
// any non-uniform control flow...)
//
// Similarly, the implementation foreach_unique assumes as a
// Similarly, the implementation of foreach_unique assumes as a
// precondition that the mask won't be all off going into it, so
// we'll enforce that here...
*okPtr = false;