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interpret: support for per-byte provenance

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This commit is contained in:
Ralf Jung 2022-11-06 13:00:09 +01:00
parent 452cf4f710
commit 2cef9e3d19
18 changed files with 506 additions and 291 deletions
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8
compiler/rustc_codegen_llvm/src/consts.rs
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@ -26,7 +26,7 @@ use std::ops::Range;
pub fn const_alloc_to_llvm<'ll>(cx: &CodegenCx<'ll, '_>, alloc: ConstAllocation<'_>) -> &'ll Value {
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;
@ -78,7 +78,7 @@ pub fn const_alloc_to_llvm<'ll>(cx: &CodegenCx<'ll, '_>, alloc: ConstAllocation<
}
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;
@ -489,7 +489,7 @@ impl<'ll> StaticMethods for CodegenCx<'ll, '_> {
// happens to be zero. Instead, we should only check the value of defined bytes
// and set all undefined bytes to zero if this allocation is headed for the
// BSS.
let all_bytes_are_zero = alloc.provenance().is_empty()
let all_bytes_are_zero = alloc.provenance().ptrs().is_empty()
&& alloc
.inspect_with_uninit_and_ptr_outside_interpreter(0..alloc.len())
.iter()
@ -513,7 +513,7 @@ impl<'ll> StaticMethods for CodegenCx<'ll, '_> {
section.as_str().as_ptr().cast(),
section.as_str().len() as c_uint,
);
assert!(alloc.provenance().is_empty());
assert!(alloc.provenance().ptrs().is_empty());
// The `inspect` method is okay here because we checked for provenance, and
// because we are doing this access to inspect the final interpreter state (not