[llvm] Remove Manual combine-to (PR #165106)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-arm

Author: AZero13 (AZero13)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/165106.diff


1 Files Affected:

- (modified) llvm/lib/Target/ARM/ARMISelLowering.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 313ae3d68fb83..9b7955eda8f8d 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -20178,7 +20178,7 @@ bool ARMTargetLowering::targetShrinkDemandedConstant(
   // code won't do this, so we have to do it explicitly to avoid an infinite
   // loop in obscure cases.)
   if (ExpandedMask == ~0U)
-    return TLO.CombineTo(Op, Op.getOperand(0));
+    return false;
 
   auto IsLegalMask = [ShrunkMask, ExpandedMask](unsigned Mask) -> bool {
     return (ShrunkMask & Mask) == ShrunkMask && (~ExpandedMask & Mask) == 0;

``````````

</details>


https://github.com/llvm/llvm-project/pull/165106