Split out `CodeGenTypes` from `CodeGen` for LLT/MVT

This reduces dependencies on `llvm-tblgen` so much.

`CodeGenTypes` depends on `Support` at the moment.
Be careful to append deps on this, since Targets' tablegens
depend on this.

Depends on D149024

Differential Revision: https://reviews.llvm.org/D148769

3 files changed, 41 insertions, 9 deletions

diff --git a/utils/bazel/llvm-project-overlay/clang/BUILD.bazel b/utils/bazel/llvm-project-overlay/clang/BUILD.bazel
index 842d25d68265..a8ada234db3e 100644
--- a/utils/bazel/llvm-project-overlay/clang/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/clang/BUILD.bazel
@@ -1755,7 +1755,7 @@ cc_library(
         "//llvm:BitReader",
         "//llvm:BitWriter",
         "//llvm:BitstreamReader",
-        "//llvm:CodeGen",
+        "//llvm:CodeGenTypes",
         "//llvm:Core",
         "//llvm:Coroutines",
         "//llvm:Coverage",
diff --git a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
index fec1183dc6f9..ee4f6a177e0c 100644
--- a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
@@ -616,7 +616,7 @@ cc_library(
     features = ["-header_modules"],
     strip_include_prefix = "utils/TableGen",
     deps = [
-        ":CodeGen",
+        ":CodeGenTypes",
         ":Support",
         ":TableGen",
         ":config",
@@ -643,7 +643,7 @@ cc_binary(
     copts = llvm_copts,
     stamp = 0,
     deps = [
-        ":CodeGen",
+        ":CodeGenTypes",
         ":Support",
         ":TableGen",
         ":TableGenGlobalISel",
@@ -1668,6 +1668,21 @@ cc_library(
 )
 
 cc_library(
+    name = "CodeGenTypes",
+    srcs = [
+        "lib/CodeGen/LowLevelType.cpp",
+    ],
+    hdrs = [
+        "include/llvm/CodeGen/LowLevelType.h",
+        "include/llvm/CodeGen/MachineValueType.h",
+    ],
+    copts = llvm_copts,
+    deps = [
+        ":Support",
+    ],
+)
+
+cc_library(
     name = "CodeGen",
     srcs = glob(
         [
@@ -1676,6 +1691,9 @@ cc_library(
             "lib/CodeGen/SelectionDAG/*.cpp",
             "lib/CodeGen/SelectionDAG/*.h",
         ],
+        exclude = [
+            "lib/CodeGen/LowLevelType.cpp",
+        ],
     ),
     hdrs = [
         "include/llvm/LinkAllPasses.h",
@@ -1696,6 +1714,7 @@ cc_library(
         ":BinaryFormat",
         ":BitReader",
         ":BitWriter",
+        ":CodeGenTypes",
         ":Core",
         ":DebugInfoCodeView",
         ":DebugInfoDWARF",
@@ -2213,6 +2232,7 @@ gentbl(
             # Depending on `:CodeGen` headers in this library is almost
             # certainly a layering problem in numerous targets.
             ":CodeGen",
+            ":CodeGenTypes",
             ":DebugInfoCodeView",
             ":MC",
             ":MCDisassembler",
@@ -2245,6 +2265,7 @@ gentbl(
             ":BinaryFormat",
             ":CFGuard",
             ":CodeGen",
+            ":CodeGenTypes",
             ":Core",
             ":IPO",
             ":MC",
@@ -2270,6 +2291,7 @@ gentbl(
         copts = llvm_copts,
         deps = [
             ":BinaryFormat",
+            ":CodeGenTypes",
             ":MC",
             ":MCParser",
             ":Support",
@@ -2315,7 +2337,7 @@ gentbl(
         copts = llvm_copts,
         features = ["-layering_check"],
         deps = [
-            ":CodeGen",
+            ":CodeGenTypes",
             ":Core",
             ":MC",
             ":MCDisassembler",
@@ -2337,7 +2359,7 @@ gentbl(
         copts = llvm_copts,
         features = ["-layering_check"],
         deps = [
-            ":CodeGen",
+            ":CodeGenTypes",
             ":MC",
             ":MCA",
             ":MCParser",
@@ -2457,6 +2479,7 @@ cc_library(
         ":BitReader",
         ":BitWriter",
         ":CodeGen",
+        ":CodeGenTypes",
         ":Core",
         ":IPO",
         ":IRPrinter",
@@ -2709,6 +2732,7 @@ cc_library(
     deps = [
         ":BinaryFormat",
         ":CodeGen",
+        ":CodeGenTypes",
         ":DebugInfoDWARF",
         ":MC",
         ":Support",
@@ -2935,6 +2959,7 @@ cc_library(
         ":AllTargetsAsmParsers",
         ":AllTargetsCodeGens",
         ":CodeGen",
+        ":CodeGenTypes",
         ":Core",
         ":ExecutionEngine",
         ":MC",
@@ -2986,6 +3011,7 @@ cc_binary(
         ":AllTargetsCodeGens",
         ":BinaryFormat",
         ":CodeGen",
+        ":CodeGenTypes",
         ":DWARFLinker",
         ":DebugInfo",
         ":DebugInfoDWARF",
@@ -3017,6 +3043,7 @@ cc_binary(
         ":AsmParser",
         ":BitReader",
         ":CodeGen",
+        ":CodeGenTypes",
         ":Core",
         ":IRPrinter",
         ":IRReader",
@@ -3406,7 +3433,7 @@ cc_binary(
     deps = [
         ":AllTargetsAsmParsers",
         ":AllTargetsCodeGens",
-        ":CodeGen",
+        ":CodeGenTypes",
         ":DWARFLinker",
         ":DebugInfoDWARF",
         ":DwarfutilOptionsTableGen",
@@ -3447,7 +3474,7 @@ cc_binary(
         ":AllTargetsAsmParsers",
         ":AllTargetsCodeGens",
         ":AllTargetsDisassemblers",
-        ":CodeGen",
+        ":CodeGenTypes",
         ":Exegesis",
         ":MC",
         ":MCParser",
@@ -4311,6 +4338,7 @@ cc_binary(
         ":BitReader",
         ":BitWriter",
         ":CodeGen",
+        ":CodeGenTypes",
         ":Core",
         ":IPO",
         ":IRReader",
diff --git a/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel b/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
index d7937f8d1212..82430699bb84 100644
--- a/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
@@ -141,6 +141,7 @@ cc_test(
         "//llvm:AsmParser",
         "//llvm:BinaryFormat",
         "//llvm:CodeGen",
+        "//llvm:CodeGenTypes",
         "//llvm:Core",
         "//llvm:MC",
         "//llvm:Passes",
@@ -169,6 +170,7 @@ cc_test(
         "//llvm:AllTargetsAsmParsers",
         "//llvm:AllTargetsCodeGens",
         "//llvm:CodeGen",
+        "//llvm:CodeGenTypes",
         "//llvm:Core",
         "//llvm:FileCheckLib",
         "//llvm:MC",
@@ -202,7 +204,7 @@ cc_test(
         "//llvm:AllTargetsAsmParsers",
         "//llvm:AllTargetsCodeGens",
         "//llvm:BinaryFormat",
-        "//llvm:CodeGen",
+        "//llvm:CodeGenTypes",
         "//llvm:Core",
         "//llvm:DebugInfo",
         "//llvm:DebugInfoDWARF",
@@ -448,6 +450,7 @@ cc_test(
         "//llvm:AllTargetsAsmParsers",
         "//llvm:AllTargetsCodeGens",
         "//llvm:CodeGen",
+        "//llvm:CodeGenTypes",
         "//llvm:Core",
         "//llvm:MC",
         "//llvm:Support",
@@ -710,6 +713,7 @@ cc_test(
         "//llvm:AArch64UtilsAndDesc",
         "//llvm:AsmParser",
         "//llvm:CodeGen",
+        "//llvm:CodeGenTypes",
         "//llvm:Core",
         "//llvm:MC",
         "//llvm:Support",
@@ -778,7 +782,7 @@ cc_test(
     deps = [
         "//llvm:AllTargetsCodeGens",
         "//llvm:AllTargetsDisassemblers",
-        "//llvm:CodeGen",
+        "//llvm:CodeGenTypes",
         "//llvm:Exegesis",
         "//llvm:MC",
         "//llvm:MCDisassembler",