diff options
Diffstat (limited to 'lib/Target/JSBackend/Relooper.h')
| -rw-r--r-- | lib/Target/JSBackend/Relooper.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/Target/JSBackend/Relooper.h b/lib/Target/JSBackend/Relooper.h index 85adf359c2..152bae0e6e 100644 --- a/lib/Target/JSBackend/Relooper.h +++ b/lib/Target/JSBackend/Relooper.h @@ -24,9 +24,11 @@ struct Shape; // Info about a branching from one block to another struct Branch { enum FlowType { - Direct = 0, // We will directly reach the right location through other means, no need for continue or break + Direct = 0, // We will directly reach the right location through other means, no need for continue or break Break = 1, - Continue = 2 + Continue = 2, + Nested = 3 // This code is directly reached, but we must be careful to ensure it is nested in an if - it is not reached + // unconditionally, other code paths exist alongside it that we need to make sure do not intertwine }; Shape *Ancestor; // If not NULL, this shape is the relevant one for purposes of getting to the target block. We break or continue on it Branch::FlowType Type; // If Ancestor is not NULL, this says whether to break or continue @@ -59,7 +61,7 @@ struct Block { Shape *Parent; // The shape we are directly inside int Id; // A unique identifier, defined when added to relooper. Note that this uniquely identifies a *logical* block - if we split it, the two instances have the same content *and* the same Id const char *Code; // The string representation of the code in this block. Owning pointer (we copy the input) - const char *BranchVar; // If we have more than one branch out, the variable whose value determines where we go + const char *BranchVar; // A variable whose value determines where we go; if this is not NULL, emit a switch on that variable bool IsCheckedMultipleEntry; // If true, we are a multiple entry, so reaching us requires setting the label variable Block(const char *CodeInit, const char *BranchVarInit); |