bjoernager/rust
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Use the aligned size for alloca at args when the pass mode is cast.

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The `load` and `store` instructions in LLVM access the aligned size.
This commit is contained in:
DianQK 2024-06-30 21:33:46 +08:00
parent 09e0abb0d1
commit c453dcd62a
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5 changed files with 21 additions and 31 deletions
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8
compiler/rustc_target/src/abi/call/mod.rs
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@ -339,7 +339,9 @@ impl CastTarget {
}
}
pub fn size<C: HasDataLayout>(&self, _cx: &C) -> Size {
/// When you only access the range containing valid data, you can use this unaligned size;
/// otherwise, use the safer `size` method.
pub fn unaligned_size<C: HasDataLayout>(&self, _cx: &C) -> Size {
// Prefix arguments are passed in specific designated registers
let prefix_size = self
.prefix
@ -353,6 +355,10 @@ impl CastTarget {
prefix_size + rest_size
}
pub fn size<C: HasDataLayout>(&self, cx: &C) -> Size {
self.unaligned_size(cx).align_to(self.align(cx))
}
pub fn align<C: HasDataLayout>(&self, cx: &C) -> Align {
self.prefix
.iter()