encounter/dawn-cmake
1
0
Fork 0
mirror of https://github.com/encounter/dawn-cmake.git synced 2025-12-18 01:15:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

transform: Fixes for DecomposeMemoryAccess

Browse Source 
CloneContext::Replace(T* what, T* with) is bug-prone, as complex transforms may want to clone `what` multiple times, or not at all. In both cases, this will likely result in an ICE as either the replacement will be reachable multiple times, or not at all.

The CTS test: webgpu:shader,execution,robust_access:linear_memory:storageClass="storage";storageMode="read_write";access="read";atomic=true;baseType="i32"
Was triggering this brokenness with DecomposeMemoryAccess's use of CloneContext::Replace(T*, T*).

Switch the usage of CloneContext::Replace(T*, T*) to the new function form.

As std::function is copyable, it cannot hold a captured std::unique_ptr.
This prevented the Replace() lambdas from capturing the necessary `BufferAccess` data, as this held a `std::unique_ptr<Offset>`.
To fix this, use a `BlockAllocator` for Offsets, and use raw pointers instead.

Because the function passed to Replace() is called just before the node is cloned, insertion of new functions will occur just before the currently evaluated module-scope entity.
This allows us to remove the "insert_after" arguments to LoadFunc(), StoreFunc(), and AtomicFunc().
We can also kill the icky InsertGlobal() and TypeDeclOf() helpers.

Bug: tint:993
Change-Id: I60972bc13a2fa819a163ee2671f61e82d0e68d2a
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/58222
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
This commit is contained in:
Ben Clayton
2021-07-15 20:29:09 +00:00
committed by Ben Clayton
parent 4511a2ebb6
commit 8a96c78931
23 changed files with 573 additions and 428 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
test/buffer/storage/static_index/read.wgsl.expected.hlsl
View File

@@ -5,6 +5,8 @@ struct tint_padded_array_element {
Inner el;
};
ByteAddressBuffer s : register(t0, space0);
float2x3 tint_symbol_6(ByteAddressBuffer buffer, uint offset) {
return float2x3(asfloat(buffer.Load3((offset + 0u))), asfloat(buffer.Load3((offset + 16u))));
}
@@ -24,8 +26,6 @@ tint_symbol_10_ret tint_symbol_10(ByteAddressBuffer buffer, uint offset) {
return tint_symbol_12;
}
ByteAddressBuffer s : register(t0, space0);
[numthreads(1, 1, 1)]
void main() {
const int3 a = asint(s.Load3(0u));

4
test/buffer/storage/static_index/write.wgsl.expected.hlsl
View File

@@ -5,6 +5,8 @@ struct tint_padded_array_element {
Inner el;
};
RWByteAddressBuffer s : register(u0, space0);
void tint_symbol_6(RWByteAddressBuffer buffer, uint offset, float2x3 value) {
buffer.Store3((offset + 0u), asuint(value[0u]));
buffer.Store3((offset + 16u), asuint(value[1u]));
@@ -27,8 +29,6 @@ void tint_symbol_10(RWByteAddressBuffer buffer, uint offset, tint_padded_array_e
tint_symbol_9(buffer, (offset + 48u), value[3u].el);
}
RWByteAddressBuffer s : register(u0, space0);
[numthreads(1, 1, 1)]
void main() {
s.Store3(0u, asuint(int3(0, 0, 0)));