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[WebAssembly] Implement GlobalISel #157161

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[WebAssembly] Implement GlobalISel #157161

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85ad998
Prepare basic GlobalISel setup and implement CallLowering::lowerForma…
QuantumSegfault Sep 29, 2025
20b8b4c
Implement WebAssemblyCallLowering::lowerCall
QuantumSegfault Sep 29, 2025
21d2a50
Fix formatting
QuantumSegfault Sep 29, 2025
748f109
Fix some issues with WebAssemblyCallLowering::lowerCall
QuantumSegfault Sep 29, 2025
8abb77c
Attempt to make CallLowering floating-point aware (use FPEXT and FPTR…
QuantumSegfault Sep 29, 2025
721a628
Fix lowerCall vararg crash.
QuantumSegfault Sep 29, 2025
f1b4a05
Set up basic legalization (scalar only, limited support for FP, p0 only)
QuantumSegfault Sep 29, 2025
fa779c4
start on regbankselect
QuantumSegfault Sep 29, 2025
c0c68c5
Finish initial pass over regbankselect
QuantumSegfault Sep 29, 2025
3ca5826
Begin work on instruction selection
QuantumSegfault Oct 2, 2025
baae9d5
Instruction selection wave 2
QuantumSegfault Oct 3, 2025
120f9aa
Fix error due to difference HwMode signature
QuantumSegfault Oct 6, 2025
bb523f8
Setup combiners
QuantumSegfault Oct 9, 2025
ce5e73b
Implement more floating-point ops
QuantumSegfault Oct 10, 2025
21544dd
Add scalarization for vector ops (fallback when SIMD isn't available)
QuantumSegfault Oct 10, 2025
0835d56
Enable regbankselect to choose f32/f64 for ambiguous instructions (e.…
QuantumSegfault Oct 11, 2025
42f62ef
Ensure GlobalISel is actually linked in
QuantumSegfault Oct 11, 2025
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18 changes: 18 additions & 0 deletions llvm/lib/Target/WebAssembly/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -9,13 +9,30 @@ tablegen(LLVM WebAssemblyGenDisassemblerTables.inc -gen-disassembler)
tablegen(LLVM WebAssemblyGenFastISel.inc -gen-fast-isel)
tablegen(LLVM WebAssemblyGenInstrInfo.inc -gen-instr-info)
tablegen(LLVM WebAssemblyGenMCCodeEmitter.inc -gen-emitter)
tablegen(LLVM WebAssemblyGenRegisterBank.inc -gen-register-bank)
tablegen(LLVM WebAssemblyGenRegisterInfo.inc -gen-register-info)
tablegen(LLVM WebAssemblyGenSDNodeInfo.inc -gen-sd-node-info)
tablegen(LLVM WebAssemblyGenSubtargetInfo.inc -gen-subtarget)

set(LLVM_TARGET_DEFINITIONS WebAssemblyGISel.td)
tablegen(LLVM WebAssemblyGenGlobalISel.inc -gen-global-isel)
tablegen(LLVM WebAssemblyGenO0PreLegalizeGICombiner.inc -gen-global-isel-combiner
-combiners="WebAssemblyO0PreLegalizerCombiner")
tablegen(LLVM WebAssemblyGenPreLegalizeGICombiner.inc -gen-global-isel-combiner
-combiners="WebAssemblyPreLegalizerCombiner")
tablegen(LLVM WebAssemblyGenPostLegalizeGICombiner.inc -gen-global-isel-combiner
-combiners="WebAssemblyPostLegalizerCombiner")

add_public_tablegen_target(WebAssemblyCommonTableGen)

add_llvm_target(WebAssemblyCodeGen
GISel/WebAssemblyCallLowering.cpp
GISel/WebAssemblyInstructionSelector.cpp
GISel/WebAssemblyO0PreLegalizerCombiner.cpp
GISel/WebAssemblyPostLegalizerCombiner.cpp
GISel/WebAssemblyPreLegalizerCombiner.cpp
GISel/WebAssemblyLegalizerInfo.cpp
GISel/WebAssemblyRegisterBankInfo.cpp
WebAssemblyAddMissingPrototypes.cpp
WebAssemblyArgumentMove.cpp
WebAssemblyAsmPrinter.cpp
Expand Down Expand Up @@ -72,6 +89,7 @@ add_llvm_target(WebAssemblyCodeGen
CodeGen
CodeGenTypes
Core
GlobalISel
MC
Scalar
SelectionDAG
Expand Down
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