[embedded] Respect float arg lowering convention under -mfloat-abi=hard #74354
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kubamracek
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MaxDesiatov,
phausler,
rjmccall,
rauhul,
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eeckstein
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@swift-ci please test |
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In IRGen, when we emit an entry point to a @convention(c) function, we have an assumption that if you have a coersion type that is a StructType, the elements are always supposed to be passed as individual elements of the struct (multiple elements of the explosion). This is not true under
-mfloat-abi=hard. Let's fix that by only limiting the struct explosion to args that haveAI.getCanBeFlattened() == true.Fixes #72626
rdar://119725141