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nested: Use early exit instead of giant if in DtoCreateNestedContextType [nfc]

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This commit is contained in:
David Nadlinger 2016-02-06 21:16:05 +01:00
parent 03429eb60f
commit 0c7660a98b
1 changed files with 95 additions and 92 deletions
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29
gen/nested.cpp
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@ -328,6 +328,7 @@ static void DtoCreateNestedContextType(FuncDeclaration *fd) {
IrFunction &irFunc = *getIrFunc(fd);
if (irFunc.nestedContextCreated) {
Logger::println("already done");
return;
}
irFunc.nestedContextCreated = true;
@ -338,9 +339,22 @@ static void DtoCreateNestedContextType(FuncDeclaration *fd) {
DtoCreateNestedContextType(parentFunc);
}
// construct nested variables array
if (fd->closureVars.dim > 0) {
if (fd->closureVars.dim == 0) {
// No local variables of this function are captured.
if (parentFunc) {
// Propagate context arg properties if the context arg is passed on
// unmodified.
IrFunction &parentIrFunc = *getIrFunc(parentFunc);
irFunc.frameType = parentIrFunc.frameType;
irFunc.frameTypeAlignment = parentIrFunc.frameTypeAlignment;
irFunc.depth = parentIrFunc.depth;
}
return;
}
Logger::println("has nested frame");
// construct nested variables array
// start with adding all enclosing parent frames until a static parent is
// reached
@ -428,17 +442,6 @@ static void DtoCreateNestedContextType(FuncDeclaration *fd) {
// Store type in IrFunction
irFunc.frameType = frameType;
irFunc.frameTypeAlignment = builder.overallAlignment();
} else // no captured variables
{
if (parentFunc) {
// Propagate context arg properties if the context arg is passed on
// unmodified.
IrFunction &parentIrFunc = *getIrFunc(parentFunc);
irFunc.frameType = parentIrFunc.frameType;
irFunc.frameTypeAlignment = parentIrFunc.frameTypeAlignment;
irFunc.depth = parentIrFunc.depth;
}
}
}
void DtoCreateNestedContext(FuncDeclaration *fd) {