Emit structs when emitting the aliases.

This Cl updates the AST dump command to emit struct members after
emitting the type alias.

Change-Id: I5e0c3d8f2cc56525586646c613839c2e014d471f
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/27320
Commit-Queue: David Neto <dneto@google.com>
Reviewed-by: David Neto <dneto@google.com>

src/ast/module.cc

@@ -16,6 +16,8 @@
 
 #include <sstream>
 
+#include "src/ast/type/struct_type.h"
+
 namespace tint {
 namespace ast {
 
@@ -95,7 +97,13 @@ std::string Module::to_str() const {
     ep->to_str(out, indent);
   }
   for (auto* const alias : alias_types_) {
+    for (size_t i = 0; i < indent; ++i) {
+      out << " ";
+    }
     out << alias->name() << " -> " << alias->type()->type_name() << std::endl;
+    if (alias->type()->IsStruct()) {
+      alias->type()->AsStruct()->impl()->to_str(out, indent);
+    }
   }
   for (const auto& func : functions_) {
     func->to_str(out, indent);

src/reader/spirv/function_memory_test.cc

@@ -748,8 +748,12 @@ TEST_F(SpvParserTest, RemapStorageBuffer_TypesAndVarDeclarations) {
     storage_buffer
     __alias_S__struct_S
   }
-RTArr -> __array__u32_stride_4
-S -> __struct_S)"));
+  RTArr -> __array__u32_stride_4
+  S -> __struct_S
+  [[block]] Struct{
+    StructMember{[[ offset 0 ]] field0: __u32}
+    StructMember{[[ offset 4 ]] field1: __alias_RTArr__array__u32_stride_4}
+  })"));
 }
 
 TEST_F(SpvParserTest, RemapStorageBuffer_ThroughAccessChain_NonCascaded) {

src/reader/spirv/parser_impl_module_var_test.cc

@@ -1310,7 +1310,12 @@ TEST_F(SpvParserTest, ModuleScopeVar_NonReadableDecoration_DroppedForNow) {
     storage_buffer
     __alias_S__struct_S
   }
-S -> __struct_S
+  S -> __struct_S
+  [[block]] Struct{
+    StructMember{field0: __u32}
+    StructMember{field1: __f32}
+    StructMember{field2: __array__u32_2}
+  }
 })")) << module_str;
 }
 
@@ -1332,7 +1337,12 @@ TEST_F(SpvParserTest, ModuleScopeVar_NonWritableDecoration_DroppedForNow) {
     storage_buffer
     __alias_S__struct_S
   }
-S -> __struct_S
+  S -> __struct_S
+  [[block]] Struct{
+    StructMember{field0: __u32}
+    StructMember{field1: __f32}
+    StructMember{field2: __array__u32_2}
+  }
 })")) << module_str;
 }
 
@@ -1358,7 +1368,10 @@ TEST_F(SpvParserTest, ModuleScopeVar_ColMajorDecoration_Dropped) {
     storage_buffer
     __alias_S__struct_S
   }
-S -> __struct_S
+  S -> __struct_S
+  [[block]] Struct{
+    StructMember{field0: __mat_2_3__f32}
+  }
 })")) << module_str;
 }
 
@@ -1384,7 +1397,10 @@ TEST_F(SpvParserTest, ModuleScopeVar_MatrixStrideDecoration_Dropped) {
     storage_buffer
     __alias_S__struct_S
   }
-S -> __struct_S
+  S -> __struct_S
+  [[block]] Struct{
+    StructMember{field0: __mat_2_3__f32}
+  }
 })")) << module_str;
 }
 

src/reader/spirv/parser_impl_named_types_test.cc

@@ -60,8 +60,16 @@ TEST_F(SpvParserTest, NamedTypes_Dup_EmitBoth) {
     %s2 = OpTypeStruct %uint %uint
   )"));
   EXPECT_TRUE(p->BuildAndParseInternalModule()) << p->error();
-  EXPECT_THAT(p->module().to_str(),
-              HasSubstr("S -> __struct_S\nS_1 -> __struct_S_1"));
+  EXPECT_THAT(p->module().to_str(), HasSubstr(R"(S -> __struct_S
+  Struct{
+    StructMember{field0: __u32}
+    StructMember{field1: __u32}
+  }
+  S_1 -> __struct_S_1
+  Struct{
+    StructMember{field0: __u32}
+    StructMember{field1: __u32}
+  })"));
 }
 
 // TODO(dneto): Should we make an alias for an un-decoratrd array with
@@ -89,7 +97,7 @@ TEST_F(SpvParserTest, NamedTypes_AnonRTArray_Dup_EmitBoth) {
   )"));
   EXPECT_TRUE(p->BuildAndParseInternalModule());
   EXPECT_THAT(p->module().to_str(),
-              HasSubstr("RTArr -> __array__u32_stride_8\nRTArr_1 -> "
+              HasSubstr("RTArr -> __array__u32_stride_8\n  RTArr_1 -> "
                         "__array__u32_stride_8\n"));
 }
 
@@ -129,10 +137,9 @@ TEST_F(SpvParserTest, NamedTypes_AnonArray_Dup_EmitBoth) {
     %arr2 = OpTypeArray %uint %uint_5
   )"));
   EXPECT_TRUE(p->BuildAndParseInternalModule());
-  EXPECT_THAT(
-      p->module().to_str(),
-      HasSubstr(
-          "Arr -> __array__u32_5_stride_8\nArr_1 -> __array__u32_5_stride_"));
+  EXPECT_THAT(p->module().to_str(),
+              HasSubstr("Arr -> __array__u32_5_stride_8\n  Arr_1 -> "
+                        "__array__u32_5_stride_8"));
 }
 
 // TODO(dneto): Handle arrays sized by a spec constant.