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| author | Paulo Matos <pmatos@igalia.com> | 2021-07-22 21:11:39 +0200 |
|---|---|---|
| committer | Paulo Matos <pmatos@igalia.com> | 2021-07-22 22:07:24 +0200 |
| commit | 46667a10039b664b953eb70534c27627b35a267d (patch) | |
| tree | d8de1c786f43b6a20ed295c55645d12987bb5358 /llvm/lib/CodeGen/CodeGenPrepare.cpp | |
| parent | df0066a1c9b9610c58d336bdf353e20a20b7ab3f (diff) | |
| download | llvm-46667a10039b664b953eb70534c27627b35a267d.zip llvm-46667a10039b664b953eb70534c27627b35a267d.tar.gz llvm-46667a10039b664b953eb70534c27627b35a267d.tar.bz2 | |
[WebAssembly] Implementation of global.get/set for reftypes in LLVM IR
Reland of 31859f896.
This change implements new DAG notes GLOBAL_GET/GLOBAL_SET, and
lowering methods for load and stores of reference types from IR
globals. Once the lowering creates the new nodes, tablegen pattern
matches those and converts them to Wasm global.get/set.
Reviewed By: tlively
Differential Revision: https://reviews.llvm.org/D104797
Diffstat (limited to 'llvm/lib/CodeGen/CodeGenPrepare.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/CodeGenPrepare.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp index 163236c..1c0932e 100644 --- a/llvm/lib/CodeGen/CodeGenPrepare.cpp +++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp @@ -6465,6 +6465,10 @@ bool CodeGenPrepare::optimizeLoadExt(LoadInst *Load) { EVT LoadResultVT = TLI->getValueType(*DL, Load->getType()); unsigned BitWidth = LoadResultVT.getSizeInBits(); + // If the BitWidth is 0, do not try to optimize the type + if (BitWidth == 0) + return false; + APInt DemandBits(BitWidth, 0); APInt WidestAndBits(BitWidth, 0); |