[WebAssembly] TableGen-erate SDNode descriptions #166259
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This allows SDNodes to be validated against their expected type profiles and reduces the number of changes required to add a new node. CALL and RET_CALL do not have a description in td files, and it is not currently possible to add one as these nodes have both variable operands and variable results. Part of llvm#119709.
|
@llvm/pr-subscribers-backend-webassembly Author: Sergei Barannikov (s-barannikov) ChangesThis allows SDNodes to be validated against their expected type profiles and reduces the number of changes required to add a new node. CALL and RET_CALL do not have a description in td files, and it is not currently possible to add one as these nodes have both variable operands and variable results. Part of #119709. Full diff: https://github.com/llvm/llvm-project/pull/166259.diff 6 Files Affected:
diff --git a/llvm/lib/Target/WebAssembly/CMakeLists.txt b/llvm/lib/Target/WebAssembly/CMakeLists.txt
index 1e83cbeac50d6..17df119d62709 100644
--- a/llvm/lib/Target/WebAssembly/CMakeLists.txt
+++ b/llvm/lib/Target/WebAssembly/CMakeLists.txt
@@ -10,6 +10,7 @@ tablegen(LLVM WebAssemblyGenFastISel.inc -gen-fast-isel)
tablegen(LLVM WebAssemblyGenInstrInfo.inc -gen-instr-info)
tablegen(LLVM WebAssemblyGenMCCodeEmitter.inc -gen-emitter)
tablegen(LLVM WebAssemblyGenRegisterInfo.inc -gen-register-info)
+tablegen(LLVM WebAssemblyGenSDNodeInfo.inc -gen-sd-node-info)
tablegen(LLVM WebAssemblyGenSubtargetInfo.inc -gen-subtarget)
add_public_tablegen_target(WebAssemblyCommonTableGen)
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISD.def b/llvm/lib/Target/WebAssembly/WebAssemblyISD.def
deleted file mode 100644
index 23108e429eda8..0000000000000
--- a/llvm/lib/Target/WebAssembly/WebAssemblyISD.def
+++ /dev/null
@@ -1,64 +0,0 @@
-//- WebAssemblyISD.def - WebAssembly ISD ---------------------------*- C++ -*-//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// This file describes the various WebAssembly ISD node types.
-///
-//===----------------------------------------------------------------------===//
-
-// NOTE: NO INCLUDE GUARD DESIRED!
-
-HANDLE_NODETYPE(CALL)
-HANDLE_NODETYPE(RET_CALL)
-HANDLE_NODETYPE(RETURN)
-HANDLE_NODETYPE(ARGUMENT)
-HANDLE_NODETYPE(LOCAL_GET)
-HANDLE_NODETYPE(LOCAL_SET)
-// A wrapper node for TargetExternalSymbol, TargetGlobalAddress, and MCSymbol
-HANDLE_NODETYPE(Wrapper)
-// A special node for TargetGlobalAddress used in PIC code for
-// __memory_base/__table_base relative access.
-HANDLE_NODETYPE(WrapperREL)
-HANDLE_NODETYPE(BR_IF)
-HANDLE_NODETYPE(BR_TABLE)
-HANDLE_NODETYPE(DOT)
-HANDLE_NODETYPE(EXT_ADD_PAIRWISE_U)
-HANDLE_NODETYPE(EXT_ADD_PAIRWISE_S)
-HANDLE_NODETYPE(SHUFFLE)
-HANDLE_NODETYPE(SWIZZLE)
-HANDLE_NODETYPE(VEC_SHL)
-HANDLE_NODETYPE(VEC_SHR_S)
-HANDLE_NODETYPE(VEC_SHR_U)
-HANDLE_NODETYPE(NARROW_U)
-HANDLE_NODETYPE(EXTEND_LOW_S)
-HANDLE_NODETYPE(EXTEND_LOW_U)
-HANDLE_NODETYPE(EXTEND_HIGH_S)
-HANDLE_NODETYPE(EXTEND_HIGH_U)
-HANDLE_NODETYPE(CONVERT_LOW_S)
-HANDLE_NODETYPE(CONVERT_LOW_U)
-HANDLE_NODETYPE(PROMOTE_LOW)
-HANDLE_NODETYPE(TRUNC_SAT_ZERO_S)
-HANDLE_NODETYPE(TRUNC_SAT_ZERO_U)
-HANDLE_NODETYPE(DEMOTE_ZERO)
-HANDLE_NODETYPE(I64_ADD128)
-HANDLE_NODETYPE(I64_SUB128)
-HANDLE_NODETYPE(I64_MUL_WIDE_S)
-HANDLE_NODETYPE(I64_MUL_WIDE_U)
-
-// Memory intrinsics
-HANDLE_NODETYPE(GLOBAL_GET)
-HANDLE_NODETYPE(GLOBAL_SET)
-HANDLE_NODETYPE(TABLE_GET)
-HANDLE_NODETYPE(TABLE_SET)
-
-// Bulk memory instructions. These follow LLVM's expected semantics of
-// supporting out-of-bounds pointers if the length is zero, by inserting
-// a branch around Wasm's `memory.copy` and `memory.fill`, which would
-// otherwise trap.
-HANDLE_NODETYPE(MEMCPY)
-HANDLE_NODETYPE(MEMSET)
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
index 7ec463bdc3b84..af322982d5355 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
@@ -942,20 +942,6 @@ MachineBasicBlock *WebAssemblyTargetLowering::EmitInstrWithCustomInserter(
}
}
-const char *
-WebAssemblyTargetLowering::getTargetNodeName(unsigned Opcode) const {
- switch (static_cast<WebAssemblyISD::NodeType>(Opcode)) {
- case WebAssemblyISD::FIRST_NUMBER:
- break;
-#define HANDLE_NODETYPE(NODE) \
- case WebAssemblyISD::NODE: \
- return "WebAssemblyISD::" #NODE;
-#include "WebAssemblyISD.def"
-#undef HANDLE_NODETYPE
- }
- return nullptr;
-}
-
std::pair<unsigned, const TargetRegisterClass *>
WebAssemblyTargetLowering::getRegForInlineAsmConstraint(
const TargetRegisterInfo *TRI, StringRef Constraint, MVT VT) const {
@@ -1830,11 +1816,8 @@ SDValue WebAssemblyTargetLowering::LowerLoad(SDValue Op,
SDValue Idx = DAG.getTargetConstant(*Local, Base, MVT::i32);
EVT LocalVT = LN->getValueType(0);
- SDValue LocalGet = DAG.getNode(WebAssemblyISD::LOCAL_GET, DL, LocalVT,
- {LN->getChain(), Idx});
- SDValue Result = DAG.getMergeValues({LocalGet, LN->getChain()}, DL);
- assert(Result->getNumValues() == 2 && "Loads must carry a chain!");
- return Result;
+ return DAG.getNode(WebAssemblyISD::LOCAL_GET, DL, {LocalVT, MVT::Other},
+ {LN->getChain(), Idx});
}
if (WebAssembly::isWasmVarAddressSpace(LN->getAddressSpace()))
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h
index 472ec678534a4..f7052989b3c75 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h
@@ -19,17 +19,6 @@
namespace llvm {
-namespace WebAssemblyISD {
-
-enum NodeType : unsigned {
- FIRST_NUMBER = ISD::BUILTIN_OP_END,
-#define HANDLE_NODETYPE(NODE) NODE,
-#include "WebAssemblyISD.def"
-#undef HANDLE_NODETYPE
-};
-
-} // end namespace WebAssemblyISD
-
class WebAssemblySubtarget;
class WebAssemblyTargetLowering final : public TargetLowering {
@@ -53,7 +42,6 @@ class WebAssemblyTargetLowering final : public TargetLowering {
MachineBasicBlock *
EmitInstrWithCustomInserter(MachineInstr &MI,
MachineBasicBlock *MBB) const override;
- const char *getTargetNodeName(unsigned Opcode) const override;
std::pair<unsigned, const TargetRegisterClass *>
getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
StringRef Constraint, MVT VT) const override;
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp b/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
index 2673c81eae40b..cf5cc41ea565b 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
@@ -11,23 +11,31 @@
///
//===----------------------------------------------------------------------===//
+#include "WebAssemblySelectionDAGInfo.h"
#include "WebAssemblyTargetMachine.h"
+
+#define GET_SDNODE_DESC
+#include "WebAssemblyGenSDNodeInfo.inc"
+
using namespace llvm;
#define DEBUG_TYPE "wasm-selectiondag-info"
+WebAssemblySelectionDAGInfo::WebAssemblySelectionDAGInfo()
+ : SelectionDAGGenTargetInfo(WebAssemblyGenSDNodeInfo) {}
+
WebAssemblySelectionDAGInfo::~WebAssemblySelectionDAGInfo() = default; // anchor
-bool WebAssemblySelectionDAGInfo::isTargetMemoryOpcode(unsigned Opcode) const {
+const char *
+WebAssemblySelectionDAGInfo::getTargetNodeName(unsigned Opcode) const {
switch (static_cast<WebAssemblyISD::NodeType>(Opcode)) {
- default:
- return false;
- case WebAssemblyISD::GLOBAL_GET:
- case WebAssemblyISD::GLOBAL_SET:
- case WebAssemblyISD::TABLE_GET:
- case WebAssemblyISD::TABLE_SET:
- return true;
+ case WebAssemblyISD::CALL:
+ return "WebAssemblyISD::CALL";
+ case WebAssemblyISD::RET_CALL:
+ return "WebAssemblyISD::RET_CALL";
}
+
+ return SelectionDAGGenTargetInfo::getTargetNodeName(Opcode);
}
SDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemcpy(
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.h b/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.h
index 69c9af0966308..8775f4946d88d 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.h
@@ -17,13 +17,26 @@
#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
+#define GET_SDNODE_ENUM
+#include "WebAssemblyGenSDNodeInfo.inc"
+
namespace llvm {
+namespace WebAssemblyISD {
+
+enum NodeType : unsigned {
+ CALL = GENERATED_OPCODE_END,
+ RET_CALL,
+};
-class WebAssemblySelectionDAGInfo final : public SelectionDAGTargetInfo {
+} // namespace WebAssemblyISD
+
+class WebAssemblySelectionDAGInfo final : public SelectionDAGGenTargetInfo {
public:
+ WebAssemblySelectionDAGInfo();
+
~WebAssemblySelectionDAGInfo() override;
- bool isTargetMemoryOpcode(unsigned Opcode) const override;
+ const char *getTargetNodeName(unsigned Opcode) const override;
SDValue EmitTargetCodeForMemcpy(SelectionDAG &DAG, const SDLoc &dl,
SDValue Chain, SDValue Op1, SDValue Op2,
|
sparker-arm
reviewed
Nov 4, 2025
llvm-sync bot
pushed a commit
to arm/arm-toolchain
that referenced
this pull request
Nov 5, 2025
This allows SDNodes to be validated against their expected type profiles and reduces the number of changes required to add a new node. CALL and RET_CALL do not have a description in td files, and it is not currently possible to add one as these nodes have both variable operands and variable results. This also fixes a subtle bug detected by the enabled verification functionality. `LOCAL_GET` is declared with `SDNPHasChain` property, and thus should have both a chain operand and a chain result. The original code created a node without a chain result, which caused a check in `SDNodeInfo::verifyNode()` to fail. Part of #119709. Pull Request: llvm/llvm-project#166259
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/198/builds/9429 Here is the relevant piece of the build log for the reference |
basioli-k
added a commit
that referenced
this pull request
Nov 5, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
5 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This allows SDNodes to be validated against their expected type profiles and reduces the number of changes required to add a new node.
CALL and RET_CALL do not have a description in td files, and it is not currently possible to add one as these nodes have both variable operands and variable results.
This also fixes a subtle bug detected by the enabled verification functionality.
LOCAL_GETis declared withSDNPHasChainproperty, and thus should have both a chain operand and a chain result. The original code created a node without a chain result, which caused a check inSDNodeInfo::verifyNode()to fail.Part of #119709.