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Auto merge of #104054 - RalfJung:byte-provenance, r=oli-obk

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interpret: support for per-byte provenance

Also factors the provenance map into its own module.

The third commit does the same for the init mask. I can move it in a separate PR if you prefer.

Fixes https://github.com/rust-lang/miri/issues/2181

r? `@oli-obk`
This commit is contained in:
bors
2022-11-15 17:37:15 +00:00
parent 6d651a295e 68af46c112
commit a00f8ba7fc
30 changed files with 1253 additions and 959 deletions
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4
compiler/rustc_codegen_gcc/src/consts.rs
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@@ -297,12 +297,12 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
pub fn const_alloc_to_gcc<'gcc, 'tcx>(cx: &CodegenCx<'gcc, 'tcx>, alloc: ConstAllocation<'tcx>) -> RValue<'gcc> {
let alloc = alloc.inner();
let mut llvals = Vec::with_capacity(alloc.provenance().len() + 1);
let mut llvals = Vec::with_capacity(alloc.provenance().ptrs().len() + 1);
let dl = cx.data_layout();
let pointer_size = dl.pointer_size.bytes() as usize;
let mut next_offset = 0;
for &(offset, alloc_id) in alloc.provenance().iter() {
for &(offset, alloc_id) in alloc.provenance().ptrs().iter() {
let offset = offset.bytes();
assert_eq!(offset as usize as u64, offset);
let offset = offset as usize;