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Add const-eval for trunc

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This CL adds const-eval for `trunc`.

Bug: tint:1581
Change-Id: If58f79ea70fe490746e30ed118d847c61edd8023
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/110173
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
This commit is contained in:
dan sinclair
2022-11-16 20:07:31 +00:00
committed by Dawn LUCI CQ
parent 130b8b3941
commit 92af2b5693
165 changed files with 2489 additions and 302 deletions
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12
src/tint/resolver/const_eval.cc
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@@ -2401,6 +2401,18 @@ ConstEval::Result ConstEval::tanh(const sem::Type* ty,
return TransformElements(builder, ty, transform, args[0]);
}
ConstEval::Result ConstEval::trunc(const sem::Type* ty,
utils::VectorRef<const sem::Constant*> args,
const Source&) {
auto transform = [&](const sem::Constant* c0) {
auto create = [&](auto i) {
return CreateElement(builder, c0->Type(), decltype(i)(std::trunc(i.value)));
};
return Dispatch_fa_f32_f16(create, c0);
};
return TransformElements(builder, ty, transform, args[0]);
}
ConstEval::Result ConstEval::unpack2x16float(const sem::Type* ty,
utils::VectorRef<const sem::Constant*> args,
const Source& source) {

9
src/tint/resolver/const_eval.h
View File

@@ -737,6 +737,15 @@ class ConstEval {
utils::VectorRef<const sem::Constant*> args,
const Source& source);
/// trunc builtin
/// @param ty the expression type
/// @param args the input arguments
/// @param source the source location of the conversion
/// @return the result value, or null if the value cannot be calculated
Result trunc(const sem::Type* ty,
utils::VectorRef<const sem::Constant*> args,
const Source& source);
/// unpack2x16float builtin
/// @param ty the expression type
/// @param args the input arguments

20
src/tint/resolver/const_eval_builtin_test.cc
View File

@@ -1693,6 +1693,26 @@ INSTANTIATE_TEST_SUITE_P( //
TanhCases<f32>(),
TanhCases<f16>()))));
template <typename T>
std::vector<Case> TruncCases() {
std::vector<Case> cases = {C({T(0)}, T(0)), //
C({-T(0)}, -T(0)), //
C({T(1.5)}, T(1)), //
C({-T(1.5)}, -T(1)),
// Vector tests
C({Vec(T(0.0), T(1.5), -T(2.2))}, Vec(T(0), T(1), -T(2)))};
return cases;
}
INSTANTIATE_TEST_SUITE_P( //
Trunc,
ResolverConstEvalBuiltinTest,
testing::Combine(testing::Values(sem::BuiltinType::kTrunc),
testing::ValuesIn(Concat(TruncCases<AFloat>(), //
TruncCases<f32>(),
TruncCases<f16>()))));
std::vector<Case> Unpack4x8snormCases() {
return {
C({Val(u32(0x0000'0000))}, Vec(f32(0), f32(0), f32(0), f32(0))),

12
src/tint/resolver/intrinsic_table.inl
View File

@@ -12729,24 +12729,24 @@ constexpr OverloadInfo kOverloads[] = {
/* num parameters */ 1,
/* num template types */ 1,
/* num template numbers */ 0,
/* template types */ &kTemplateTypes[25],
/* template types */ &kTemplateTypes[24],
/* template numbers */ &kTemplateNumbers[10],
/* parameters */ &kParameters[977],
/* return matcher indices */ &kMatcherIndices[1],
/* flags */ OverloadFlags(OverloadFlag::kIsBuiltin, OverloadFlag::kSupportsVertexPipeline, OverloadFlag::kSupportsFragmentPipeline, OverloadFlag::kSupportsComputePipeline),
/* const eval */ nullptr,
/* const eval */ &ConstEval::trunc,
},
{
/* [367] */
/* num parameters */ 1,
/* num template types */ 1,
/* num template numbers */ 1,
/* template types */ &kTemplateTypes[25],
/* template types */ &kTemplateTypes[24],
/* template numbers */ &kTemplateNumbers[5],
/* parameters */ &kParameters[976],
/* return matcher indices */ &kMatcherIndices[30],
/* flags */ OverloadFlags(OverloadFlag::kIsBuiltin, OverloadFlag::kSupportsVertexPipeline, OverloadFlag::kSupportsFragmentPipeline, OverloadFlag::kSupportsComputePipeline),
/* const eval */ nullptr,
/* const eval */ &ConstEval::trunc,
},
{
/* [368] */
@@ -14551,8 +14551,8 @@ constexpr IntrinsicInfo kBuiltins[] = {
},
{
/* [79] */
/* fn trunc<T : f32_f16>(T) -> T */
/* fn trunc<N : num, T : f32_f16>(vec<N, T>) -> vec<N, T> */
/* fn trunc<T : fa_f32_f16>(@test_value(1.5) T) -> T */
/* fn trunc<N : num, T : fa_f32_f16>(@test_value(1.5) vec<N, T>) -> vec<N, T> */
/* num overloads */ 2,
/* overloads */ &kOverloads[366],
},