[llvm] 2863c64 - [RISCV][NFC] Simplify ISD::SELECT Legality (#142650)

[via llvm-commits]

Author: Sam Elliott
Date: 2025-06-03T12:49:42-07:00
New Revision: 2863c640fa0d8ab183b0180becf948de7becb639

URL: https://github.com/llvm/llvm-project/commit/2863c640fa0d8ab183b0180becf948de7becb639
DIFF: https://github.com/llvm/llvm-project/commit/2863c640fa0d8ab183b0180becf948de7becb639.diff

LOG: [RISCV][NFC] Simplify ISD::SELECT Legality (#142650)

ISD::SELECT is legal by default, so this change to the conditional makes
it clearer that XTHeadCondMov and XMipsCMove both leave this operation
legal rather than custom expanding it.

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 74686d9fc4188..f74ca2a1c5492 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -434,9 +434,7 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::ABS, MVT::i32, Custom);
   }
 
-  if (Subtarget.useCCMovInsn())
-    setOperationAction(ISD::SELECT, XLenVT, Legal);
-  else if (!Subtarget.hasVendorXTHeadCondMov())
+  if (!Subtarget.useCCMovInsn() && !Subtarget.hasVendorXTHeadCondMov())
     setOperationAction(ISD::SELECT, XLenVT, Custom);
 
   if (Subtarget.hasVendorXqcia() && !Subtarget.is64Bit()) {