[llvm-branch-commits] [llvm] release/18.x: [RISCV][ISel] Fix types in `tryFoldSelectIntoOp` (#90659) (PR #90682)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-risc-v

Author: None (llvmbot)

<details>
<summary>Changes</summary>

Backport 2647bd73696ae987addd0e74774a44108accb1e6

Requested by: @<!-- -->dtcxzyw

---
Full diff: https://github.com/llvm/llvm-project/pull/90682.diff


2 Files Affected:

- (modified) llvm/lib/Target/RISCV/RISCVISelLowering.cpp (+1-1) 
- (added) llvm/test/CodeGen/RISCV/pr90652.ll (+19) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index a0cec426002b6f..d46093b9e260a2 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -14559,7 +14559,7 @@ static SDValue tryFoldSelectIntoOp(SDNode *N, SelectionDAG &DAG,
   EVT VT = N->getValueType(0);
   SDLoc DL(N);
   SDValue OtherOp = TrueVal.getOperand(1 - OpToFold);
-  EVT OtherOpVT = OtherOp->getValueType(0);
+  EVT OtherOpVT = OtherOp.getValueType();
   SDValue IdentityOperand =
       DAG.getNeutralElement(Opc, DL, OtherOpVT, N->getFlags());
   if (!Commutative)
diff --git a/llvm/test/CodeGen/RISCV/pr90652.ll b/llvm/test/CodeGen/RISCV/pr90652.ll
new file mode 100644
index 00000000000000..2162395b92ac3c
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/pr90652.ll
@@ -0,0 +1,19 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
+; RUN: llc < %s -mtriple=riscv64 | FileCheck %s
+
+define i1 @test(i64 %x, i1 %cond1, i1 %cond2) {
+; CHECK-LABEL: test:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    addi a3, a0, 1
+; CHECK-NEXT:    slt a0, a3, a0
+; CHECK-NEXT:    not a1, a1
+; CHECK-NEXT:    and a0, a1, a0
+; CHECK-NEXT:    or a0, a2, a0
+; CHECK-NEXT:    ret
+entry:
+  %sadd = call { i64, i1 } @llvm.sadd.with.overflow.i64(i64 %x, i64 1)
+  %ov = extractvalue { i64, i1 } %sadd, 1
+  %or = or i1 %cond2, %ov
+  %sel = select i1 %cond1, i1 %cond2, i1 %or
+  ret i1 %sel
+}

``````````

</details>


https://github.com/llvm/llvm-project/pull/90682