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Implement memcpy for single-element items

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This commit is contained in:
khyperia 2020-10-20 15:41:48 +02:00
parent b4aebb4a36
commit 0d18609281
1 changed files with 21 additions and 14 deletions
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35
rustc_codegen_spirv/src/builder/builder_methods.rs
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@ -1371,29 +1371,36 @@ impl<'a, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'tcx> {
size: Self::Value,
_flags: MemFlags,
) {
self.emit()
.copy_memory_sized(dst.def, src.def, size.def, None, None, empty())
.unwrap();
if !self.builder.has_capability(Capability::Addresses) {
self.zombie(dst.def, "OpCopyMemorySized without OpCapability Addresses");
match self.builder.lookup_const_u64(size) {
Some(0) => {
// Nothing to do!
}
Some(size) if self.lookup_type(src.ty).sizeof(self) != Some(Size::from_bytes(size)) => {
self.emit()
.copy_memory(dst.def, src.def, None, None, empty())
.unwrap();
}
_ => {
self.emit()
.copy_memory_sized(dst.def, src.def, size.def, None, None, empty())
.unwrap();
if !self.builder.has_capability(Capability::Addresses) {
self.zombie(dst.def, "OpCopyMemorySized without OpCapability Addresses")
}
}
}
}
fn memmove(
&mut self,
dst: Self::Value,
_dst_align: Align,
dst_align: Align,
src: Self::Value,
_src_align: Align,
src_align: Align,
size: Self::Value,
_flags: MemFlags,
flags: MemFlags,
) {
self.emit()
.copy_memory_sized(dst.def, src.def, size.def, None, None, empty())
.unwrap();
if !self.builder.has_capability(Capability::Addresses) {
self.zombie(dst.def, "OpCopyMemorySized without OpCapability Addresses");
}
self.memcpy(dst, dst_align, src, src_align, size, flags)
}
fn memset(