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transform: DMA: Don't load ignore() arguments

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ignore() might be passed a structure holding a runtime array.

Fixed: tint:1046
Change-Id: I2beab91d8faabe69409308cf3e24b6403a84dd56
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60213
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
This commit is contained in:
Ben Clayton
2021-07-29 18:05:19 +00:00
parent ed60a9905c
commit fb91e3c8f3
6 changed files with 504 additions and 0 deletions
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7
src/transform/decompose_memory_access.cc
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@@ -915,11 +915,18 @@ void DecomposeMemoryAccess::Run(CloneContext& ctx, const DataMap&, DataMap&) {
if (auto* call_expr = node->As<ast::CallExpression>()) {
auto* call = sem.Get(call_expr);
if (auto* intrinsic = call->Target()->As<sem::Intrinsic>()) {
if (intrinsic->Type() == sem::IntrinsicType::kIgnore) {
// ignore(X)
// Don't convert X into a load, this isn't actually used.
state.TakeAccess(call_expr->params()[0]);
continue;
}
if (intrinsic->Type() == sem::IntrinsicType::kArrayLength) {
// arrayLength(X)
// Don't convert X into a load, this intrinsic actually requires the
// real pointer.
state.TakeAccess(call_expr->params()[0]);
continue;
}
if (intrinsic->IsAtomic()) {
if (auto access = state.TakeAccess(call_expr->params()[0])) {