diff options
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp index 3292dc485d8..d43bf1ab8ec 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp @@ -135,13 +135,6 @@ WebAssemblyTargetLowering::WebAssemblyTargetLowering( // Trap lowers to wasm unreachable setOperationAction(ISD::TRAP, MVT::Other, Legal); - - // Disable 128-bit shift libcalls. Currently the signature of the functions - // i128(i128, i32) aka void(i32, i64, i64, i32) doesn't match the signature - // of the call emitted by the default lowering, void(i32, i64, i64). - setLibcallName(RTLIB::SRL_I128, nullptr); - setLibcallName(RTLIB::SRA_I128, nullptr); - setLibcallName(RTLIB::SHL_I128, nullptr); } FastISel *WebAssemblyTargetLowering::createFastISel( @@ -161,9 +154,11 @@ MVT WebAssemblyTargetLowering::getScalarShiftAmountTy(const DataLayout & /*DL*/, if (BitWidth > 1 && BitWidth < 8) BitWidth = 8; if (BitWidth > 64) { - BitWidth = 64; + // The shift will be lowered to a libcall, and compiler-rt libcalls expect + // the count to be an i32. + BitWidth = 32; assert(BitWidth >= Log2_32_Ceil(VT.getSizeInBits()) && - "64-bit shift counts ought to be enough for anyone"); + "32-bit shift counts ought to be enough for anyone"); } MVT Result = MVT::getIntegerVT(BitWidth); |
