https://github.com/sunfishcode updated
https://github.com/llvm/llvm-project/pull/112035
>From b8f33cd68d11759ad774e16b4d25491a1c9fc3e4 Mon Sep 17 00:00:00 2001
From: Dan Gohman <dev@sunfishcode.online>
Date: Fri, 11 Oct 2024 04:30:32 -0700
Subject: [PATCH 1/4] [WebAssembly] Define a new "Trail1" CPU
First, define some new target features. These are subsets of existing features
that reflect implemenetation concerns:
- "call-indirect-overlong" - implied by "reference-types"; just the overlong
encoding for the `call_indirect` immediate, and not the actual reference
types.
- "bulk-memory-opt" - implied by "bulk-memory": just `memory.copy` and
`memory.fill`, and not the other instructions in the bulk-memory
proposal.
Next, define a new target CPU, "Trail1", which enables mutable-globals,
bulk-memory-opt, multivalue, sign-ext, nontrapping-fptoint, extended-const,
and call-indirect-overlong. Unlike the default "generic" CPU, "trail1" is meant
to be frozen, and followed up by "trail2" and so on when new features are
desired.
---
clang/lib/Basic/Targets/WebAssembly.cpp | 45 +++++++++++++++++++
clang/lib/Basic/Targets/WebAssembly.h | 2 +
lld/test/wasm/compress-relocs.ll | 2 +-
lld/test/wasm/import-table-explicit.s | 2 +-
lld/test/wasm/invalid-mvp-table-use.s | 2 +-
lld/wasm/InputFiles.cpp | 11 ++---
lld/wasm/SyntheticSections.cpp | 2 +-
.../AsmParser/WebAssemblyAsmParser.cpp | 12 ++---
llvm/lib/Target/WebAssembly/WebAssembly.td | 14 ++++++
.../WebAssembly/WebAssemblyFastISel.cpp | 2 +-
.../WebAssembly/WebAssemblyISelLowering.cpp | 2 +-
.../WebAssembly/WebAssemblyInstrBulkMemory.td | 15 ++++---
.../WebAssembly/WebAssemblyInstrInfo.td | 8 ++++
.../WebAssemblySelectionDAGInfo.cpp | 4 +-
.../Target/WebAssembly/WebAssemblySubtarget.h | 4 ++
.../WebAssembly/WebAssemblyUtilities.cpp | 4 +-
llvm/test/CodeGen/WebAssembly/bulk-memory.ll | 6 +--
.../test/CodeGen/WebAssembly/bulk-memory64.ll | 6 +--
18 files changed, 110 insertions(+), 33 deletions(-)
diff --git a/clang/lib/Basic/Targets/WebAssembly.cpp
b/clang/lib/Basic/Targets/WebAssembly.cpp
index 5ac9421663adea..aa3a2770727c3a 100644
--- a/clang/lib/Basic/Targets/WebAssembly.cpp
+++ b/clang/lib/Basic/Targets/WebAssembly.cpp
@@ -47,6 +47,7 @@ bool WebAssemblyTargetInfo::hasFeature(StringRef Feature)
const {
return llvm::StringSwitch<bool>(Feature)
.Case("atomics", HasAtomics)
.Case("bulk-memory", HasBulkMemory)
+ .Case("bulk-memory-opt", HasBulkMemoryOpt)
.Case("exception-handling", HasExceptionHandling)
.Case("extended-const", HasExtendedConst)
.Case("fp16", HasFP16)
@@ -55,6 +56,7 @@ bool WebAssemblyTargetInfo::hasFeature(StringRef Feature)
const {
.Case("mutable-globals", HasMutableGlobals)
.Case("nontrapping-fptoint", HasNontrappingFPToInt)
.Case("reference-types", HasReferenceTypes)
+ .Case("call-indirect-overlong", HasCallIndirectOverlong)
.Case("relaxed-simd", SIMDLevel >= RelaxedSIMD)
.Case("sign-ext", HasSignExt)
.Case("simd128", SIMDLevel >= SIMD128)
@@ -78,6 +80,8 @@ void WebAssemblyTargetInfo::getTargetDefines(const
LangOptions &Opts,
Builder.defineMacro("__wasm_atomics__");
if (HasBulkMemory)
Builder.defineMacro("__wasm_bulk_memory__");
+ if (HasBulkMemoryOpt)
+ Builder.defineMacro("__wasm_bulk_memory_opt__");
if (HasExceptionHandling)
Builder.defineMacro("__wasm_exception_handling__");
if (HasExtendedConst)
@@ -154,12 +158,23 @@ bool WebAssemblyTargetInfo::initFeatureMap(
Features["multivalue"] = true;
Features["mutable-globals"] = true;
Features["reference-types"] = true;
+ Features["call-indirect-overlong"] = true;
Features["sign-ext"] = true;
};
+ auto addTrail1Features = [&]() {
+ Features["multivalue"] = true;
+ Features["mutable-globals"] = true;
+ Features["call-indirect-overlong"] = true;
+ Features["sign-ext"] = true;
+ Features["bulk-memory-opt"] = true;
+ Features["nontrapping-fptoint"] = true;
+ Features["extended-const"] = true;
+ };
auto addBleedingEdgeFeatures = [&]() {
addGenericFeatures();
Features["atomics"] = true;
Features["bulk-memory"] = true;
+ Features["bulk-memory-opt"] = true;
Features["exception-handling"] = true;
Features["extended-const"] = true;
Features["fp16"] = true;
@@ -170,6 +185,8 @@ bool WebAssemblyTargetInfo::initFeatureMap(
};
if (CPU == "generic") {
addGenericFeatures();
+ } else if (CPU == "trail1") {
+ addTrail1Features();
} else if (CPU == "bleeding-edge") {
addBleedingEdgeFeatures();
}
@@ -196,6 +213,14 @@ bool WebAssemblyTargetInfo::handleTargetFeatures(
HasBulkMemory = false;
continue;
}
+ if (Feature == "+bulk-memory-opt") {
+ HasBulkMemoryOpt = true;
+ continue;
+ }
+ if (Feature == "-bulk-memory-opt") {
+ HasBulkMemoryOpt = false;
+ continue;
+ }
if (Feature == "+exception-handling") {
HasExceptionHandling = true;
continue;
@@ -261,6 +286,14 @@ bool WebAssemblyTargetInfo::handleTargetFeatures(
HasReferenceTypes = false;
continue;
}
+ if (Feature == "+call-indirect-overlong") {
+ HasCallIndirectOverlong = true;
+ continue;
+ }
+ if (Feature == "-call-indirect-overlong") {
+ HasCallIndirectOverlong = false;
+ continue;
+ }
if (Feature == "+relaxed-simd") {
SIMDLevel = std::max(SIMDLevel, RelaxedSIMD);
continue;
@@ -298,6 +331,18 @@ bool WebAssemblyTargetInfo::handleTargetFeatures(
<< Feature << "-target-feature";
return false;
}
+
+ // The reference-types feature included the change to `call_indirect`
+ // encodings to support overlong immediates.
+ if (HasReferenceTypes) {
+ HasCallIndirectOverlong = true;
+ }
+
+ // bulk-memory-opt is a subset of bulk-memory.
+ if (HasBulkMemory) {
+ HasBulkMemoryOpt = true;
+ }
+
return true;
}
diff --git a/clang/lib/Basic/Targets/WebAssembly.h
b/clang/lib/Basic/Targets/WebAssembly.h
index 213ec42ca84bb7..b05ad862685ad0 100644
--- a/clang/lib/Basic/Targets/WebAssembly.h
+++ b/clang/lib/Basic/Targets/WebAssembly.h
@@ -55,6 +55,7 @@ class LLVM_LIBRARY_VISIBILITY WebAssemblyTargetInfo : public
TargetInfo {
bool HasAtomics = false;
bool HasBulkMemory = false;
+ bool HasBulkMemoryOpt = false;
bool HasExceptionHandling = false;
bool HasExtendedConst = false;
bool HasFP16 = false;
@@ -63,6 +64,7 @@ class LLVM_LIBRARY_VISIBILITY WebAssemblyTargetInfo : public
TargetInfo {
bool HasMutableGlobals = false;
bool HasNontrappingFPToInt = false;
bool HasReferenceTypes = false;
+ bool HasCallIndirectOverlong = false;
bool HasSignExt = false;
bool HasTailCall = false;
diff --git a/lld/test/wasm/compress-relocs.ll b/lld/test/wasm/compress-relocs.ll
index f1faab754cb765..cea9f3476e996a 100644
--- a/lld/test/wasm/compress-relocs.ll
+++ b/lld/test/wasm/compress-relocs.ll
@@ -1,5 +1,5 @@
; RUN: llc -filetype=obj %s -o %t.o
-; RUN: llvm-mc -mattr=+reference-types -filetype=obj
-triple=wasm32-unknown-unknown %p/Inputs/call-indirect.s -o %t2.o
+; RUN: llvm-mc -mattr=+call-indirect-overlong -filetype=obj
-triple=wasm32-unknown-unknown %p/Inputs/call-indirect.s -o %t2.o
; RUN: wasm-ld --export-dynamic -o %t.wasm %t2.o %t.o
; RUN: obj2yaml %t.wasm | FileCheck %s
; RUN: wasm-ld --export-dynamic -O2 -o %t-opt.wasm %t2.o %t.o
diff --git a/lld/test/wasm/import-table-explicit.s
b/lld/test/wasm/import-table-explicit.s
index 1dc21beba06294..701b7a1dc3e165 100644
--- a/lld/test/wasm/import-table-explicit.s
+++ b/lld/test/wasm/import-table-explicit.s
@@ -1,4 +1,4 @@
-# RUN: llvm-mc -mattr=+reference-types -filetype=obj
-triple=wasm32-unknown-unknown %s -o %t.o
+# RUN: llvm-mc -mattr=+call-indirect-overlong -filetype=obj
-triple=wasm32-unknown-unknown %s -o %t.o
# RUN: wasm-ld --import-table -o %t.wasm %t.o
# RUN: obj2yaml %t.wasm | FileCheck %s
diff --git a/lld/test/wasm/invalid-mvp-table-use.s
b/lld/test/wasm/invalid-mvp-table-use.s
index b4f12a7eeb9a48..58c472e29d1ad4 100644
--- a/lld/test/wasm/invalid-mvp-table-use.s
+++ b/lld/test/wasm/invalid-mvp-table-use.s
@@ -1,7 +1,7 @@
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
#
# If any table is defined or declared besides the __indirect_function_table,
-# the compilation unit should be compiled with -mattr=+reference-types,
+# the compilation unit should be compiled with -mattr=+call-indirect-overlong,
# causing symbol table entries to be emitted for all tables.
# RUN: not wasm-ld --no-entry %t.o -o %t.wasm 2>&1 | FileCheck
-check-prefix=CHECK-ERR %s
diff --git a/lld/wasm/InputFiles.cpp b/lld/wasm/InputFiles.cpp
index de8e707ab2b497..604b6e9083e8ca 100644
--- a/lld/wasm/InputFiles.cpp
+++ b/lld/wasm/InputFiles.cpp
@@ -247,10 +247,11 @@ static void setRelocs(const std::vector<T *> &chunks,
}
}
-// An object file can have two approaches to tables. With the reference-types
-// feature enabled, input files that define or use tables declare the tables
-// using symbols, and record each use with a relocation. This way when the
-// linker combines inputs, it can collate the tables used by the inputs,
+// An object file can have two approaches to tables. With the
+// call-indirect-overlong feature enabled (explicitly, or implied by the
+// reference-types feature), input files that define or use tables declare the
+// tables using symbols, and record each use with a relocation. This way when
+// the linker combines inputs, it can collate the tables used by the inputs,
// assigning them distinct table numbers, and renumber all the uses as
// appropriate. At the same time, the linker has special logic to build the
// indirect function table if it is needed.
@@ -276,7 +277,7 @@ void ObjFile::addLegacyIndirectFunctionTableIfNeeded(
return;
// It's possible for an input to define tables and also use the indirect
- // function table, but forget to compile with -mattr=+reference-types.
+ // function table, but forget to compile with -mattr=+call-indirect-overlong.
// For these newer files, we require symbols for all tables, and
// relocations for all of their uses.
if (tableSymbolCount != 0) {
diff --git a/lld/wasm/SyntheticSections.cpp b/lld/wasm/SyntheticSections.cpp
index a3bc90cfe759ca..74e3efff4cdfb8 100644
--- a/lld/wasm/SyntheticSections.cpp
+++ b/lld/wasm/SyntheticSections.cpp
@@ -326,7 +326,7 @@ void TableSection::addTable(InputTable *table) {
// to assign table number 0 to the indirect function table.
for (const auto *culprit : out.importSec->importedSymbols) {
if (isa<UndefinedTable>(culprit)) {
- error("object file not built with 'reference-types' feature "
+ error("object file not built with 'call-indirect-overlong' feature "
"conflicts with import of table " +
culprit->getName() + " by file " +
toString(culprit->getFile()));
diff --git a/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
b/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
index ee8686d1166a5b..091b3ffb8b25d2 100644
--- a/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
+++ b/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
@@ -292,7 +292,7 @@ class WebAssemblyAsmParser final : public MCTargetAsmParser
{
DefaultFunctionTable = getOrCreateFunctionTableSymbol(
getContext(), "__indirect_function_table", Is64);
- if (!STI->checkFeatures("+reference-types"))
+ if (!STI->checkFeatures("+call-indirect-overlong"))
DefaultFunctionTable->setOmitFromLinkingSection();
}
@@ -532,11 +532,11 @@ class WebAssemblyAsmParser final : public
MCTargetAsmParser {
}
bool parseFunctionTableOperand(std::unique_ptr<WebAssemblyOperand> *Op) {
- if (STI->checkFeatures("+reference-types")) {
- // If the reference-types feature is enabled, there is an explicit table
- // operand. To allow the same assembly to be compiled with or without
- // reference types, we allow the operand to be omitted, in which case we
- // default to __indirect_function_table.
+ if (STI->checkFeatures("+call-indirect-overlong")) {
+ // If the call-indirect-overlong feature is enabled, there is an explicit
+ // table operand. To allow the same assembly to be compiled with or
+ // without call-indirect overlong, we allow the operand to be omitted, in
+ // which case we default to __indirect_function_table.
auto &Tok = Lexer.getTok();
if (Tok.is(AsmToken::Identifier)) {
auto *Sym =
diff --git a/llvm/lib/Target/WebAssembly/WebAssembly.td
b/llvm/lib/Target/WebAssembly/WebAssembly.td
index c632d4a74355d8..7081ee48132a07 100644
--- a/llvm/lib/Target/WebAssembly/WebAssembly.td
+++ b/llvm/lib/Target/WebAssembly/WebAssembly.td
@@ -29,6 +29,10 @@ def FeatureBulkMemory :
SubtargetFeature<"bulk-memory", "HasBulkMemory", "true",
"Enable bulk memory operations">;
+def FeatureBulkMemoryOpt :
+ SubtargetFeature<"bulk-memory-opt", "HasBulkMemoryOpt", "true",
+ "Enable bulk memory optimization operations">;
+
def FeatureExceptionHandling :
SubtargetFeature<"exception-handling", "HasExceptionHandling", "true",
"Enable Wasm exception handling">;
@@ -63,6 +67,10 @@ def FeatureReferenceTypes :
SubtargetFeature<"reference-types", "HasReferenceTypes", "true",
"Enable reference types">;
+def FeatureCallIndirectOverlong :
+ SubtargetFeature<"call-indirect-overlong", "HasCallIndirectOverlong",
"true",
+ "Enable overlong encoding for call_indirect
immediates">;
+
def FeatureRelaxedSIMD :
SubtargetFeature<"relaxed-simd", "SIMDLevel", "RelaxedSIMD",
"Enable relaxed-simd instructions">;
@@ -113,6 +121,12 @@ def : ProcessorModel<"generic", NoSchedModel,
[FeatureMultivalue, FeatureMutableGlobals,
FeatureReferenceTypes, FeatureSignExt]>;
+def : ProcessorModel<"trail1", NoSchedModel,
+ [FeatureMultivalue, FeatureMutableGlobals,
+ FeatureCallIndirectOverlong, FeatureSignExt,
+ FeatureBulkMemoryOpt, FeatureNontrappingFPToInt,
+ FeatureExtendedConst]>;
+
// Latest and greatest experimental version of WebAssembly. Bugs included!
def : ProcessorModel<"bleeding-edge", NoSchedModel,
[FeatureAtomics, FeatureBulkMemory,
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp
b/llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp
index 7c90fff2a5c1d7..d84d1f4dedec50 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp
@@ -899,7 +899,7 @@ bool WebAssemblyFastISel::selectCall(const Instruction *I) {
// The table into which this call_indirect indexes.
MCSymbolWasm *Table = WebAssembly::getOrCreateFunctionTableSymbol(
MF->getContext(), Subtarget);
- if (Subtarget->hasReferenceTypes()) {
+ if (Subtarget->hasCallIndirectOverlong()) {
MIB.addSym(Table);
} else {
// Otherwise for the MVP there is at most one table whose number is 0,
but
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
index 5f76d666823e28..1b6a7cbf14edfe 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
@@ -633,7 +633,7 @@ LowerCallResults(MachineInstr &CallResults, DebugLoc DL,
MachineBasicBlock *BB,
MF.getContext(), Subtarget)
: WebAssembly::getOrCreateFunctionTableSymbol(
MF.getContext(), Subtarget);
- if (Subtarget->hasReferenceTypes()) {
+ if (Subtarget->hasCallIndirectOverlong()) {
MIB.addSym(Table);
} else {
// For the MVP there is at most one table whose number is 0, but we can't
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyInstrBulkMemory.td
b/llvm/lib/Target/WebAssembly/WebAssemblyInstrBulkMemory.td
index 7aeae54d95a8c9..5ffe0d22d3e112 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyInstrBulkMemory.td
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyInstrBulkMemory.td
@@ -16,8 +16,7 @@ multiclass BULK_I<dag oops_r, dag iops_r, dag oops_s, dag
iops_s,
list<dag> pattern_r, string asmstr_r = "",
string asmstr_s = "", bits<32> simdop = -1> {
defm "" : I<oops_r, iops_r, oops_s, iops_s, pattern_r, asmstr_r, asmstr_s,
- !or(0xfc00, !and(0xff, simdop))>,
- Requires<[HasBulkMemory]>;
+ !or(0xfc00, !and(0xff, simdop))>;
}
// Bespoke types and nodes for bulk memory ops
@@ -43,13 +42,15 @@ defm MEMORY_INIT_A#B :
(outs), (ins i32imm_op:$seg, i32imm_op:$idx),
[],
"memory.init\t$seg, $idx, $dest, $offset, $size",
- "memory.init\t$seg, $idx", 0x08>;
+ "memory.init\t$seg, $idx", 0x08>,
+ Requires<[HasBulkMemory]>;
let hasSideEffects = 1 in
defm DATA_DROP :
BULK_I<(outs), (ins i32imm_op:$seg), (outs), (ins i32imm_op:$seg),
[],
- "data.drop\t$seg", "data.drop\t$seg", 0x09>;
+ "data.drop\t$seg", "data.drop\t$seg", 0x09>,
+ Requires<[HasBulkMemory]>;
let mayLoad = 1, mayStore = 1 in
defm MEMORY_COPY_A#B :
@@ -60,7 +61,8 @@ defm MEMORY_COPY_A#B :
rc:$dst, rc:$src, rc:$len
)],
"memory.copy\t$src_idx, $dst_idx, $dst, $src, $len",
- "memory.copy\t$src_idx, $dst_idx", 0x0a>;
+ "memory.copy\t$src_idx, $dst_idx", 0x0a>,
+ Requires<[HasBulkMemoryOpt]>;
let mayStore = 1 in
defm MEMORY_FILL_A#B :
@@ -68,7 +70,8 @@ defm MEMORY_FILL_A#B :
(outs), (ins i32imm_op:$idx),
[(wasm_memset (i32 imm:$idx), rc:$dst, I32:$value, rc:$size)],
"memory.fill\t$idx, $dst, $value, $size",
- "memory.fill\t$idx", 0x0b>;
+ "memory.fill\t$idx", 0x0b>,
+ Requires<[HasBulkMemoryOpt]>;
}
defm : BulkMemoryOps<I32, "32">;
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td
b/llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td
index 767ac86f1351b5..05415b658c13aa 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td
@@ -30,6 +30,10 @@ def HasBulkMemory :
Predicate<"Subtarget->hasBulkMemory()">,
AssemblerPredicate<(all_of FeatureBulkMemory), "bulk-memory">;
+def HasBulkMemoryOpt :
+ Predicate<"Subtarget->hasBulkMemoryOpt()">,
+ AssemblerPredicate<(all_of FeatureBulkMemoryOpt), "bulk-memory-opt">;
+
def HasExceptionHandling :
Predicate<"Subtarget->hasExceptionHandling()">,
AssemblerPredicate<(all_of FeatureExceptionHandling),
"exception-handling">;
@@ -68,6 +72,10 @@ def HasReferenceTypes :
Predicate<"Subtarget->hasReferenceTypes()">,
AssemblerPredicate<(all_of FeatureReferenceTypes), "reference-types">;
+def HasCallIndirectOverlong :
+ Predicate<"Subtarget->hasCallIndirectOverlong()">,
+ AssemblerPredicate<(all_of FeatureCallIndirectOverlong),
"call-indirect-overlong">;
+
def HasRelaxedSIMD :
Predicate<"Subtarget->hasRelaxedSIMD()">,
AssemblerPredicate<(all_of FeatureRelaxedSIMD), "relaxed-simd">;
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
b/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
index 74af4c8873f735..3ca0e3f468a6e4 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySelectionDAGInfo.cpp
@@ -23,7 +23,7 @@ SDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemcpy(
SDValue Size, Align Alignment, bool IsVolatile, bool AlwaysInline,
MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const {
auto &ST = DAG.getMachineFunction().getSubtarget<WebAssemblySubtarget>();
- if (!ST.hasBulkMemory())
+ if (!ST.hasBulkMemoryOpt())
return SDValue();
SDValue MemIdx = DAG.getConstant(0, DL, MVT::i32);
@@ -47,7 +47,7 @@ SDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemset(
SDValue Size, Align Alignment, bool IsVolatile, bool AlwaysInline,
MachinePointerInfo DstPtrInfo) const {
auto &ST = DAG.getMachineFunction().getSubtarget<WebAssemblySubtarget>();
- if (!ST.hasBulkMemory())
+ if (!ST.hasBulkMemoryOpt())
return SDValue();
SDValue MemIdx = DAG.getConstant(0, DL, MVT::i32);
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
index f990120775d155..09037436d92dfc 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
@@ -41,6 +41,7 @@ class WebAssemblySubtarget final : public
WebAssemblyGenSubtargetInfo {
bool HasAtomics = false;
bool HasBulkMemory = false;
+ bool HasBulkMemoryOpt = false;
bool HasExceptionHandling = false;
bool HasExtendedConst = false;
bool HasFP16 = false;
@@ -49,6 +50,7 @@ class WebAssemblySubtarget final : public
WebAssemblyGenSubtargetInfo {
bool HasMutableGlobals = false;
bool HasNontrappingFPToInt = false;
bool HasReferenceTypes = false;
+ bool HasCallIndirectOverlong = false;
bool HasSignExt = false;
bool HasTailCall = false;
@@ -94,6 +96,7 @@ class WebAssemblySubtarget final : public
WebAssemblyGenSubtargetInfo {
bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
bool hasAtomics() const { return HasAtomics; }
bool hasBulkMemory() const { return HasBulkMemory; }
+ bool hasBulkMemoryOpt() const { return HasBulkMemoryOpt; }
bool hasExceptionHandling() const { return HasExceptionHandling; }
bool hasExtendedConst() const { return HasExtendedConst; }
bool hasFP16() const { return HasFP16; }
@@ -102,6 +105,7 @@ class WebAssemblySubtarget final : public
WebAssemblyGenSubtargetInfo {
bool hasMutableGlobals() const { return HasMutableGlobals; }
bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
bool hasReferenceTypes() const { return HasReferenceTypes; }
+ bool hasCallIndirectOverlong() const { return HasCallIndirectOverlong; }
bool hasRelaxedSIMD() const { return SIMDLevel >= RelaxedSIMD; }
bool hasSignExt() const { return HasSignExt; }
bool hasSIMD128() const { return SIMDLevel >= SIMD128; }
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
index ed186e65a80cf9..ea18caea2b7e1a 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
@@ -117,7 +117,7 @@ MCSymbolWasm *WebAssembly::getOrCreateFunctionTableSymbol(
Sym->setUndefined();
}
// MVP object files can't have symtab entries for tables.
- if (!(Subtarget && Subtarget->hasReferenceTypes()))
+ if (!(Subtarget && Subtarget->hasCallIndirectOverlong()))
Sym->setOmitFromLinkingSection();
return Sym;
}
@@ -142,7 +142,7 @@ MCSymbolWasm
*WebAssembly::getOrCreateFuncrefCallTableSymbol(
Sym->setTableType(TableType);
}
// MVP object files can't have symtab entries for tables.
- if (!(Subtarget && Subtarget->hasReferenceTypes()))
+ if (!(Subtarget && Subtarget->hasCallIndirectOverlong()))
Sym->setOmitFromLinkingSection();
return Sym;
}
diff --git a/llvm/test/CodeGen/WebAssembly/bulk-memory.ll
b/llvm/test/CodeGen/WebAssembly/bulk-memory.ll
index dc29dc81c13ec2..a2dae3890b1f0e 100644
--- a/llvm/test/CodeGen/WebAssembly/bulk-memory.ll
+++ b/llvm/test/CodeGen/WebAssembly/bulk-memory.ll
@@ -1,7 +1,7 @@
-; RUN: llc < %s -asm-verbose=false -verify-machineinstrs
-disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
-wasm-keep-registers -mcpu=mvp -mattr=+bulk-memory | FileCheck %s
--check-prefixes CHECK,BULK-MEM
-; RUN: llc < %s -asm-verbose=false -verify-machineinstrs
-disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
-wasm-keep-registers -mcpu=mvp -mattr=-bulk-memory | FileCheck %s
--check-prefixes CHECK,NO-BULK-MEM
+; RUN: llc < %s -asm-verbose=false -verify-machineinstrs
-disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
-wasm-keep-registers -mcpu=mvp -mattr=+bulk-memory-opt | FileCheck %s
--check-prefixes CHECK,BULK-MEM
+; RUN: llc < %s -asm-verbose=false -verify-machineinstrs
-disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
-wasm-keep-registers -mcpu=mvp -mattr=-bulk-memory-opt | FileCheck %s
--check-prefixes CHECK,NO-BULK-MEM
-; Test that basic bulk memory codegen works correctly
+; Test that basic bulk-memory-opt codegen works correctly
target triple = "wasm32-unknown-unknown"
diff --git a/llvm/test/CodeGen/WebAssembly/bulk-memory64.ll
b/llvm/test/CodeGen/WebAssembly/bulk-memory64.ll
index 8ee5f6314381cd..92d66c1abf90b4 100644
--- a/llvm/test/CodeGen/WebAssembly/bulk-memory64.ll
+++ b/llvm/test/CodeGen/WebAssembly/bulk-memory64.ll
@@ -1,7 +1,7 @@
-; RUN: llc < %s -asm-verbose=false -verify-machineinstrs
-disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
-wasm-keep-registers -mcpu=mvp -mattr=+bulk-memory | FileCheck %s
--check-prefixes CHECK,BULK-MEM
-; RUN: llc < %s -asm-verbose=false -verify-machineinstrs
-disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
-wasm-keep-registers -mcpu=mvp -mattr=-bulk-memory | FileCheck %s
--check-prefixes CHECK,NO-BULK-MEM
+; RUN: llc < %s -asm-verbose=false -verify-machineinstrs
-disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
-wasm-keep-registers -mcpu=mvp -mattr=+bulk-memory-opt | FileCheck %s
--check-prefixes CHECK,BULK-MEM
+; RUN: llc < %s -asm-verbose=false -verify-machineinstrs
-disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
-wasm-keep-registers -mcpu=mvp -mattr=-bulk-memory-opt | FileCheck %s
--check-prefixes CHECK,NO-BULK-MEM
-; Test that basic bulk memory codegen works correctly
+; Test that basic bulk memory opt codegen works correctly
target triple = "wasm64-unknown-unknown"
>From 55fc5af799a21f186df2f5a8579da4c6713efe94 Mon Sep 17 00:00:00 2001
From: Dan Gohman <dev@sunfishcode.online>
Date: Fri, 11 Oct 2024 17:04:25 -0700
Subject: [PATCH 2/4] Add a target-features-cpus test for trail1.
---
.../WebAssembly/target-features-cpus.ll | 26 +++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/llvm/test/CodeGen/WebAssembly/target-features-cpus.ll
b/llvm/test/CodeGen/WebAssembly/target-features-cpus.ll
index 77d1564409f78c..a37abfaf884180 100644
--- a/llvm/test/CodeGen/WebAssembly/target-features-cpus.ll
+++ b/llvm/test/CodeGen/WebAssembly/target-features-cpus.ll
@@ -1,5 +1,6 @@
; RUN: llc < %s -mcpu=mvp | FileCheck %s --check-prefixes MVP
; RUN: llc < %s -mcpu=generic | FileCheck %s --check-prefixes GENERIC
+; RUN: llc < %s -mcpu=trail1 | FileCheck %s --check-prefixes TRAIL1
; RUN: llc < %s | FileCheck %s --check-prefixes GENERIC
; RUN: llc < %s -mcpu=bleeding-edge | FileCheck %s --check-prefixes
BLEEDING-EDGE
@@ -27,6 +28,31 @@ target triple = "wasm32-unknown-unknown"
; GENERIC-NEXT: .int8 8
; GENERIC-NEXT: .ascii "sign-ext"
+; trail1: +bulk-memory-opt, +call-indirect-overlong, +extended-const,
+multivalue, +mutable-globals, +nontrapping-fptoint, +sign-ext
+; TRAIL1-LABEL: .custom_section.target_features,"",@
+; TRAIL1-NEXT: .int8 6
+; TRAIL1-NEXT: .int8 43
+; TRAIL1-NEXT: .int8 15
+; TRAIL1-NEXT: .int8 "bulk-memory-opt"
+; TRAIL1-NEXT: .int8 43
+; TRAIL1-NEXT: .int8 22
+; TRAIL1-NEXT: .int8 "call-indirect-overlong"
+; TRAIL1-NEXT: .int8 43
+; TRAIL1-NEXT: .int8 14
+; TRAIL1-NEXT: .ascii "extended-const"
+; TRAIL1-NEXT: .int8 43
+; TRAIL1-NEXT: .int8 10
+; TRAIL1-NEXT: .ascii "multivalue"
+; TRAIL1-NEXT: .int8 43
+; TRAIL1-NEXT: .int8 15
+; TRAIL1-NEXT: .ascii "mutable-globals"
+; TRAIL1-NEXT: .int8 43
+; TRAIL1-NEXT: .int8 19
+; TRAIL1-NEXT: .ascii "nontrapping-fptoint"
+; TRAIL1-NEXT: .int8 43
+; TRAIL1-NEXT: .int8 8
+; TRAIL1-NEXT: .ascii "sign-ext"
+
; bleeding-edge: +atomics, +bulk-memory, +exception-handling, +extended-const,
; +fp16, +multimemory, +multivalue, +mutable-globals,
; +nontrapping-fptoint, +relaxed-simd, +reference-types,
>From 24e58550483c0569e48f9b1e11edaee5acb1ac1e Mon Sep 17 00:00:00 2001
From: Dan Gohman <dev@sunfishcode.online>
Date: Fri, 11 Oct 2024 09:53:30 -0700
Subject: [PATCH 3/4] call-indirect-overlong is implied by reference-types.
---
.../AsmParser/WebAssemblyAsmParser.cpp | 15 +++++++++------
llvm/lib/Target/WebAssembly/WebAssembly.td | 9 +++++----
.../lib/Target/WebAssembly/WebAssemblySubtarget.h | 4 ++--
3 files changed, 16 insertions(+), 12 deletions(-)
diff --git a/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
b/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
index 091b3ffb8b25d2..197d5723804f21 100644
--- a/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
+++ b/llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
@@ -292,7 +292,8 @@ class WebAssemblyAsmParser final : public MCTargetAsmParser
{
DefaultFunctionTable = getOrCreateFunctionTableSymbol(
getContext(), "__indirect_function_table", Is64);
- if (!STI->checkFeatures("+call-indirect-overlong"))
+ if (!STI->checkFeatures("+call-indirect-overlong") &&
+ !STI->checkFeatures("+reference-types"))
DefaultFunctionTable->setOmitFromLinkingSection();
}
@@ -532,11 +533,13 @@ class WebAssemblyAsmParser final : public
MCTargetAsmParser {
}
bool parseFunctionTableOperand(std::unique_ptr<WebAssemblyOperand> *Op) {
- if (STI->checkFeatures("+call-indirect-overlong")) {
- // If the call-indirect-overlong feature is enabled, there is an explicit
- // table operand. To allow the same assembly to be compiled with or
- // without call-indirect overlong, we allow the operand to be omitted, in
- // which case we default to __indirect_function_table.
+ if (STI->checkFeatures("+call-indirect-overlong") ||
+ STI->checkFeatures("+reference-types")) {
+ // If the call-indirect-overlong feature is enabled, or implied by the
+ // reference-types feature, there is an explicit table operand. To allow
+ // the same assembly to be compiled with or without
+ // call-indirect-overlong, we allow the operand to be omitted, in which
+ // case we default to __indirect_function_table.
auto &Tok = Lexer.getTok();
if (Tok.is(AsmToken::Identifier)) {
auto *Sym =
diff --git a/llvm/lib/Target/WebAssembly/WebAssembly.td
b/llvm/lib/Target/WebAssembly/WebAssembly.td
index 7081ee48132a07..2f5d2aae00d067 100644
--- a/llvm/lib/Target/WebAssembly/WebAssembly.td
+++ b/llvm/lib/Target/WebAssembly/WebAssembly.td
@@ -119,7 +119,8 @@ def : ProcessorModel<"mvp", NoSchedModel, []>;
// the importance of the features.
def : ProcessorModel<"generic", NoSchedModel,
[FeatureMultivalue, FeatureMutableGlobals,
- FeatureReferenceTypes, FeatureSignExt]>;
+ FeatureReferenceTypes, FeatureCallIndirectOverlong,
+ FeatureSignExt]>;
def : ProcessorModel<"trail1", NoSchedModel,
[FeatureMultivalue, FeatureMutableGlobals,
@@ -129,13 +130,13 @@ def : ProcessorModel<"trail1", NoSchedModel,
// Latest and greatest experimental version of WebAssembly. Bugs included!
def : ProcessorModel<"bleeding-edge", NoSchedModel,
- [FeatureAtomics, FeatureBulkMemory,
+ [FeatureAtomics, FeatureBulkMemory, FeatureBulkMemoryOpt,
FeatureExceptionHandling, FeatureExtendedConst,
FeatureFP16, FeatureMultiMemory,
FeatureMultivalue, FeatureMutableGlobals,
FeatureNontrappingFPToInt, FeatureRelaxedSIMD,
- FeatureReferenceTypes, FeatureSIMD128, FeatureSignExt,
- FeatureTailCall]>;
+ FeatureReferenceTypes, FeatureCallIndirectOverlong,
+ FeatureSIMD128, FeatureSignExt, FeatureTailCall]>;
//===----------------------------------------------------------------------===//
// Target Declaration
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
index 09037436d92dfc..8e623d694d204c 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
@@ -96,7 +96,7 @@ class WebAssemblySubtarget final : public
WebAssemblyGenSubtargetInfo {
bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
bool hasAtomics() const { return HasAtomics; }
bool hasBulkMemory() const { return HasBulkMemory; }
- bool hasBulkMemoryOpt() const { return HasBulkMemoryOpt; }
+ bool hasBulkMemoryOpt() const { return HasBulkMemoryOpt || HasBulkMemory; }
bool hasExceptionHandling() const { return HasExceptionHandling; }
bool hasExtendedConst() const { return HasExtendedConst; }
bool hasFP16() const { return HasFP16; }
@@ -105,7 +105,7 @@ class WebAssemblySubtarget final : public
WebAssemblyGenSubtargetInfo {
bool hasMutableGlobals() const { return HasMutableGlobals; }
bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
bool hasReferenceTypes() const { return HasReferenceTypes; }
- bool hasCallIndirectOverlong() const { return HasCallIndirectOverlong; }
+ bool hasCallIndirectOverlong() const { return HasCallIndirectOverlong ||
HasReferenceTypes; }
bool hasRelaxedSIMD() const { return SIMDLevel >= RelaxedSIMD; }
bool hasSignExt() const { return HasSignExt; }
bool hasSIMD128() const { return SIMDLevel >= SIMD128; }
>From cc803bfbeb7ab01a4a88ffd611d4ab333e1381c4 Mon Sep 17 00:00:00 2001
From: Dan Gohman <dev@sunfishcode.online>
Date: Fri, 11 Oct 2024 21:48:34 -0700
Subject: [PATCH 4/4] Handle features implying other features in the Subtarget
constructor.
---
llvm/lib/Target/WebAssembly/WebAssemblySubtarget.cpp | 9 +++++++++
llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h | 4 ++--
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.cpp
b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.cpp
index 912f61765579f8..7df15eb767093e 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.cpp
@@ -34,6 +34,15 @@
WebAssemblySubtarget::initializeSubtargetDependencies(StringRef CPU,
CPU = "generic";
ParseSubtargetFeatures(CPU, /*TuneCPU*/ CPU, FS);
+
+ // reference-types implies call-indirect-overlong
+ if (HasReferenceTypes)
+ HasCallIndirectOverlong = true;
+
+ // bulk-memory implies bulk-memory-opt
+ if (HasBulkMemory)
+ HasBulkMemoryOpt = true;
+
return *this;
}
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
index 8e623d694d204c..09037436d92dfc 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
+++ b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h
@@ -96,7 +96,7 @@ class WebAssemblySubtarget final : public
WebAssemblyGenSubtargetInfo {
bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
bool hasAtomics() const { return HasAtomics; }
bool hasBulkMemory() const { return HasBulkMemory; }
- bool hasBulkMemoryOpt() const { return HasBulkMemoryOpt || HasBulkMemory; }
+ bool hasBulkMemoryOpt() const { return HasBulkMemoryOpt; }
bool hasExceptionHandling() const { return HasExceptionHandling; }
bool hasExtendedConst() const { return HasExtendedConst; }
bool hasFP16() const { return HasFP16; }
@@ -105,7 +105,7 @@ class WebAssemblySubtarget final : public
WebAssemblyGenSubtargetInfo {
bool hasMutableGlobals() const { return HasMutableGlobals; }
bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
bool hasReferenceTypes() const { return HasReferenceTypes; }
- bool hasCallIndirectOverlong() const { return HasCallIndirectOverlong ||
HasReferenceTypes; }
+ bool hasCallIndirectOverlong() const { return HasCallIndirectOverlong; }
bool hasRelaxedSIMD() const { return SIMDLevel >= RelaxedSIMD; }
bool hasSignExt() const { return HasSignExt; }
bool hasSIMD128() const { return SIMDLevel >= SIMD128; }
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