[llvm] [ARM] Allow usubo and uaddo to happen for any legal type (PR #163457)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-aarch64

Author: AZero13 (AZero13)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/163457.diff


1 Files Affected:

- (modified) llvm/lib/Target/AArch64/AArch64ISelLowering.h (+3-3) 


``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.h b/llvm/lib/Target/AArch64/AArch64ISelLowering.h
index 00956fdc8e48e..fa3b8aa559eed 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.h
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.h
@@ -328,9 +328,9 @@ class AArch64TargetLowering : public TargetLowering {
 
   bool shouldFormOverflowOp(unsigned Opcode, EVT VT,
                             bool MathUsed) const override {
-    // Using overflow ops for overflow checks only should beneficial on
-    // AArch64.
-    return TargetLowering::shouldFormOverflowOp(Opcode, VT, true);
+    if (VT.isVector())
+      return false;
+    return !isOperationExpand(Opcode, VT);
   }
 
   Value *emitLoadLinked(IRBuilderBase &Builder, Type *ValueTy, Value *Addr,

``````````

</details>


https://github.com/llvm/llvm-project/pull/163457