[llvm] 0801940 - [RISCV] Avoid pointer element type access for masked atomicrmw intrinsics

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2022-01-31T09:28:39+01:00
New Revision: 0801940c17b7b5bb69a76cd713ad76a6d2ba0788

URL: https://github.com/llvm/llvm-project/commit/0801940c17b7b5bb69a76cd713ad76a6d2ba0788
DIFF: https://github.com/llvm/llvm-project/commit/0801940c17b7b5bb69a76cd713ad76a6d2ba0788.diff

LOG: [RISCV] Avoid pointer element type access for masked atomicrmw intrinsics

masked.atomicrmw.*.i32 intrinsics access an i32 (and then possibly
mask it), so hardcode MVT::i32 as the access type here, rather than
determining it from the pointer element type.

Differential Revision: https://reviews.llvm.org/D118336

Added: 
    

Modified: 
    llvm/lib/Target/RISCV/RISCVISelLowering.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index aefccd0ae9ffb..4225ae42ed39d 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -1121,17 +1121,15 @@ bool RISCVTargetLowering::getTgtMemIntrinsic(IntrinsicInfo &Info,
   case Intrinsic::riscv_masked_atomicrmw_min_i32:
   case Intrinsic::riscv_masked_atomicrmw_umax_i32:
   case Intrinsic::riscv_masked_atomicrmw_umin_i32:
-  case Intrinsic::riscv_masked_cmpxchg_i32: {
-    PointerType *PtrTy = cast<PointerType>(I.getArgOperand(0)->getType());
+  case Intrinsic::riscv_masked_cmpxchg_i32:
     Info.opc = ISD::INTRINSIC_W_CHAIN;
-    Info.memVT = MVT::getVT(PtrTy->getPointerElementType());
+    Info.memVT = MVT::i32;
     Info.ptrVal = I.getArgOperand(0);
     Info.offset = 0;
     Info.align = Align(4);
     Info.flags = MachineMemOperand::MOLoad | MachineMemOperand::MOStore |
                  MachineMemOperand::MOVolatile;
     return true;
-  }
   case Intrinsic::riscv_masked_strided_load:
     Info.opc = ISD::INTRINSIC_W_CHAIN;
     Info.ptrVal = I.getArgOperand(1);