RISCV/ISel: don't unnecessarily freeze Src

artagnon · artagnon · commit c9721349e517 · 2023-10-18T17:56:34.000+01:00
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -2965,9 +2965,6 @@ static SDValue lowerVectorXRINT(SDValue Op, SelectionDAG &DAG,
     Src = convertToScalableVector(ContainerVT, Src, DAG, Subtarget);
   }
 
-  // Freeze the source since we are increasing the number of uses.
-  Src = DAG.getFreeze(Src);
-
   auto [Mask, VL] = getDefaultVLOps(VT, ContainerVT, DL, DAG, Subtarget);
   SDValue Truncated =
       DAG.getNode(RISCVISD::VFCVT_X_F_VL, DL, ContainerVT, Src, Mask, VL);

Original file line number	Diff line number	Diff line change
`@@ -2965,9 +2965,6 @@ static SDValue lowerVectorXRINT(SDValue Op, SelectionDAG &DAG,`
`2965`	`2965`	`Src = convertToScalableVector(ContainerVT, Src, DAG, Subtarget);`
`2966`	`2966`	`}`
`2967`	`2967`
`2968`		`- // Freeze the source since we are increasing the number of uses.`
`2969`		`- Src = DAG.getFreeze(Src);`
`2970`		`-`
`2971`	`2968`	`auto [Mask, VL] = getDefaultVLOps(VT, ContainerVT, DL, DAG, Subtarget);`
`2972`	`2969`	`SDValue Truncated =`
`2973`	`2970`	`DAG.getNode(RISCVISD::VFCVT_X_F_VL, DL, ContainerVT, Src, Mask, VL);`