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storageBarrier() has workgroup memory scope

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The storageBarrier() builtin causes flushes to be visible to
all invocations within a workgroup, not the whole device.
The limitation is inherited from Metal.

Fixes: tint:1310
Change-Id: I6f94faa88bd3c7b6cec0601312c6c65a907c5973
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69800
Auto-Submit: David Neto <dneto@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
This commit is contained in:
David Neto
2021-11-22 20:47:37 +00:00
committed by Tint LUCI CQ
parent bc5d8f6bcf
commit e85efca13f
3 changed files with 7 additions and 9 deletions
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2
src/writer/spirv/builder.cc
View File

@@ -3109,7 +3109,7 @@ bool Builder::GenerateControlBarrierIntrinsic(const sem::Intrinsic* intrinsic) {
static_cast<uint32_t>(spv::MemorySemanticsMask::WorkgroupMemory);
} else if (intrinsic->Type() == sem::IntrinsicType::kStorageBarrier) {
execution = static_cast<uint32_t>(spv::Scope::Workgroup);
memory = static_cast<uint32_t>(spv::Scope::Device);
memory = static_cast<uint32_t>(spv::Scope::Workgroup);
semantics =
static_cast<uint32_t>(spv::MemorySemanticsMask::AcquireRelease) |
static_cast<uint32_t>(spv::MemorySemanticsMask::UniformMemory);

5
src/writer/spirv/builder_intrinsic_test.cc
View File

@@ -2541,13 +2541,12 @@ TEST_F(IntrinsicBuilderTest, Call_StorageBarrier) {
%1 = OpTypeFunction %2
%6 = OpTypeInt 32 0
%7 = OpConstant %6 2
%8 = OpConstant %6 1
%9 = OpConstant %6 72
%8 = OpConstant %6 72
)";
auto got_types = DumpInstructions(b.types());
EXPECT_EQ(expected_types, got_types);
auto* expected_instructions = R"(OpControlBarrier %7 %8 %9
auto* expected_instructions = R"(OpControlBarrier %7 %7 %8
)";
auto got_instructions = DumpInstructions(b.functions()[0].instructions());
EXPECT_EQ(expected_instructions, got_instructions);