[llvm] SystemZ: Add missing predicate for bitconvert patterns (PR #90715)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-systemz

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>

This will prevent accidentally mis-selecting some conversions on targets without vector registers.

---
Full diff: https://github.com/llvm/llvm-project/pull/90715.diff


1 Files Affected:

- (modified) llvm/lib/Target/SystemZ/SystemZInstrVector.td (+2) 


``````````diff
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrVector.td b/llvm/lib/Target/SystemZ/SystemZInstrVector.td
index c29c54a6cb79de..c09f48891c1391 100644
--- a/llvm/lib/Target/SystemZ/SystemZInstrVector.td
+++ b/llvm/lib/Target/SystemZ/SystemZInstrVector.td
@@ -1692,6 +1692,7 @@ let Predicates = [FeatureVector] in
 // Conversions
 //===----------------------------------------------------------------------===//
 
+let Predicates = [FeatureVector] in {
 def : Pat<(v16i8 (bitconvert (v8i16 VR128:$src))), (v16i8 VR128:$src)>;
 def : Pat<(v16i8 (bitconvert (v4i32 VR128:$src))), (v16i8 VR128:$src)>;
 def : Pat<(v16i8 (bitconvert (v2i64 VR128:$src))), (v16i8 VR128:$src)>;
@@ -1755,6 +1756,7 @@ def : Pat<(i128  (bitconvert (v2i64 VR128:$src))), (i128  VR128:$src)>;
 def : Pat<(i128  (bitconvert (v4f32 VR128:$src))), (i128  VR128:$src)>;
 def : Pat<(i128  (bitconvert (v2f64 VR128:$src))), (i128  VR128:$src)>;
 def : Pat<(i128  (bitconvert (f128  VR128:$src))), (i128  VR128:$src)>;
+} // End Predicates = [FeatureVector]
 
 //===----------------------------------------------------------------------===//
 // Replicating scalars

``````````

</details>


https://github.com/llvm/llvm-project/pull/90715