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There were two problems here. 1. The inline predicates `isInitialized` and `isValueInitialized` on `ArrayAggregateLiteral` caused their callers to materialize every `int` that was a valid index into the array. This was slow on huge value-initialized arrays. 2. The `isInitialized` predicate was used in the `TInstructionTag` IPA type, creating a numbered tuple for each integer in it. This seemed to be entirely unnecessary since the `TranslatedElement`s using those tags were already indexed appropriately.
14 lines
281 B
C++
14 lines
281 B
C++
// This test ensures that we can efficiently generate IR for a large
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// value-initialized array.
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struct Big {
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char buffer[1 << 30]; // 1 GiB
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Big() : buffer() {} // This explicit init of `buffer` makes it value-initialized
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};
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int main() {
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Big *big = new Big;
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return 0;
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}
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