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Add unmasked { } statement.

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This reestablishes an "all on" execution mask for the gang, which can
be useful for nested parallelism..
This commit is contained in:
Matt Pharr
2012-06-22 14:30:58 -07:00
parent b4a078e2f6
commit 54459255d4
10 changed files with 282 additions and 30 deletions
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6
ast.cpp
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@@ -103,6 +103,7 @@ WalkAST(ASTNode *node, ASTPreCallBackFunc preFunc, ASTPostCallBackFunc postFunc,
PrintStmt *ps;
AssertStmt *as;
DeleteStmt *dels;
UnmaskedStmt *ums;
if ((es = dynamic_cast<ExprStmt *>(node)) != NULL)
es->expr = (Expr *)WalkAST(es->expr, preFunc, postFunc, data);
@@ -174,6 +175,8 @@ WalkAST(ASTNode *node, ASTPreCallBackFunc preFunc, ASTPostCallBackFunc postFunc,
as->expr = (Expr *)WalkAST(as->expr, preFunc, postFunc, data);
else if ((dels = dynamic_cast<DeleteStmt *>(node)) != NULL)
dels->expr = (Expr *)WalkAST(dels->expr, preFunc, postFunc, data);
else if ((ums = dynamic_cast<UnmaskedStmt *>(node)) != NULL)
ums->stmts = (Stmt *)WalkAST(ums->stmts, preFunc, postFunc, data);
else
FATAL("Unhandled statement type in WalkAST()");
}
@@ -396,7 +399,8 @@ lCheckAllOffSafety(ASTNode *node, void *data) {
if (dynamic_cast<ForeachStmt *>(node) != NULL ||
dynamic_cast<ForeachActiveStmt *>(node) != NULL ||
dynamic_cast<ForeachUniqueStmt *>(node) != NULL) {
dynamic_cast<ForeachUniqueStmt *>(node) != NULL ||
dynamic_cast<UnmaskedStmt *>(node) != NULL) {
// 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