================
@@ -1759,20 +1759,29 @@ void
CodeGenFunction::emitZeroOrPatternForAutoVarInit(QualType type,
const VarDecl &D,
Address Loc) {
auto trivialAutoVarInit = getContext().getLangOpts().getTrivialAutoVarInit();
+ auto trivialAutoVarInitSizeBound =
+ getContext().getLangOpts().TrivialAutoVarInitSizeBound;
CharUnits Size = getContext().getTypeSizeInChars(type);
bool isVolatile = type.isVolatileQualified();
if (!Size.isZero()) {
+ auto allocSize =
CGM.getDataLayout().getTypeAllocSize(Loc.getElementType());
----------------
vitalybuka wrote:
I'd expect that it's kind of `bail out` measure which should not be consider as
a contract by a end-user. So confusing should not be a concern.
Also how
```
struct S {
long a;
long b;
char c;
} var;
```
is better then:
```
long a;
long b;
char c;
```
My impression was that your concern is buffers of hundreds of bytes, then maybe
better to target just them?
If it 's `24 vs 16` maybe it should not use auto init at all?
https://github.com/llvm/llvm-project/pull/74777
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