[llvm-bugs] [Bug 95271] Assertion `(TLI.getTypeAction(*DAG.getContext(), Op.getValueType()) == TargetLowering::TypeLegal || Op.getOpcode() == ISD::TargetConstant || Op.getOpcode() == ISD::Register) && "Unexpected illegal type!"' failed.

Wed, 12 Jun 2024 10:20:36 -0700

Issue 95271
Summary Assertion `(TLI.getTypeAction(*DAG.getContext(), Op.getValueType()) == TargetLowering::TypeLegal || Op.getOpcode() == ISD::TargetConstant || Op.getOpcode() == ISD::Register) && "Unexpected illegal type!"' failed.
Labels backend:RISC-V, crash-on-valid
Assignees
Reporter dtcxzyw 
    Reproducer:
```
; llc test.ll
target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128"
target triple = "riscv64-unknown-linux-gnu"

define i32 @main(ptr %p) {
entry:
 %0 = load i32, ptr %p, align 4
  %dec.i = add i32 %0, 1
  %1 = tail call i32 @llvm.ctpop.i32(i32 %dec.i)
  ret i32 %1
}
```
cc @topperc @RKSimon 

llvm version: 1a0e67d73023e7ad9e7e79f66afb43a6f2561d04


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