resolver: Validate pipline stage use for intrinsics

Use the new [[stage()]] decorations in intrinsics.def to validate that intrinsics are only called from the correct pipeline stages.

Fixed: tint:657
Change-Id: I9efda26369c45c6f816bdaa53408d3909db403a1
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/53084
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

tools/src/cmd/intrinsic-gen/gen/intrinsic_table.go

@@ -96,6 +96,8 @@ type Overload struct {
 	// These indices are consumed by the matchers themselves.
 	// The first index is always a TypeMatcher.
 	ReturnMatcherIndicesOffset *int
+	// StageUses describes the stages an overload can be used in
+	CanBeUsedInStage sem.StageUses
 }
 
 // Function is used to create the C++ IntrinsicInfo structure
@@ -193,6 +195,7 @@ func (b *intrinsicTableBuilder) buildOverload(o *sem.Overload) (Overload, error)
 		OpenNumbersOffset:          b.lut.openNumbers.Add(ob.openNumbers),
 		ParametersOffset:           b.lut.parameters.Add(ob.parameters),
 		ReturnMatcherIndicesOffset: ob.returnTypeMatcherIndicesOffset,
+		CanBeUsedInStage:           o.CanBeUsedInStage,
 	}, nil
 }
 

tools/src/cmd/intrinsic-gen/sem/sem.go

@@ -146,6 +146,21 @@ type StageUses struct {
 	Compute  bool
 }
 
+// List returns the stage uses as a string list
+func (u StageUses) List() []string {
+	out := []string{}
+	if u.Vertex {
+		out = append(out, "vertex")
+	}
+	if u.Fragment {
+		out = append(out, "fragment")
+	}
+	if u.Compute {
+		out = append(out, "compute")
+	}
+	return out
+}
+
 // Format implements the fmt.Formatter interface
 func (o Overload) Format(w fmt.State, verb rune) {
 	fmt.Fprintf(w, "fn %v", o.Function.Name)