[llvm] [X86][AMX] Avoid to construct invalid shape for checking, NFCI (PR #105973)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-regalloc

Author: Phoebe Wang (phoebewang)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/105973.diff


1 Files Affected:

- (modified) llvm/include/llvm/CodeGen/VirtRegMap.h (+1-1) 


``````````diff
diff --git a/llvm/include/llvm/CodeGen/VirtRegMap.h b/llvm/include/llvm/CodeGen/VirtRegMap.h
index 42e8d294a637ad..864eb23e133ebd 100644
--- a/llvm/include/llvm/CodeGen/VirtRegMap.h
+++ b/llvm/include/llvm/CodeGen/VirtRegMap.h
@@ -114,7 +114,7 @@ class TargetInstrInfo;
     bool isShapeMapEmpty() const { return Virt2ShapeMap.empty(); }
 
     bool hasShape(Register virtReg) const {
-      return getShape(virtReg).isValid();
+      return Virt2ShapeMap.contains(virtReg);
     }
 
     ShapeT getShape(Register virtReg) const {

``````````

</details>


https://github.com/llvm/llvm-project/pull/105973