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Cast only where necessary

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oli-obk committed Aug 17, 2019
1 parent 1fb854a commit ab949fdd64433749ebb7f8ef516ee2cdfe217a9d
Showing with 5 additions and 4 deletions.
  1. +5 −4 src/librustc_codegen_llvm/common.rs
@@ -333,20 +333,21 @@ impl ConstMethods<'tcx> for CodegenCx<'ll, 'tcx> {
offset: Size,
) -> PlaceRef<'tcx, &'ll Value> {
assert_eq!(alloc.align, layout.align.abi);
let llty = self.type_ptr_to(layout.llvm_type(self));
let llval = if layout.size == Size::ZERO {
let llval = self.const_usize(alloc.align.bytes());
unsafe { llvm::LLVMConstIntToPtr(llval, self.type_ptr_to(self.type_i8p())) }
unsafe { llvm::LLVMConstIntToPtr(llval, llty) }
} else {
let init = const_alloc_to_llvm(self, alloc);
let base_addr = self.static_addr_of(init, alloc.align, None);

unsafe { llvm::LLVMConstInBoundsGEP(
let llval = unsafe { llvm::LLVMConstInBoundsGEP(
self.const_bitcast(base_addr, self.type_i8p()),
&self.const_usize(offset.bytes()),
1,
)}
)};
self.const_bitcast(llval, llty)
};
let llval = self.const_bitcast(llval, self.type_ptr_to(layout.llvm_type(self)));
PlaceRef::new_sized(llval, layout, alloc.align)
}

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