[llvm] AMDGPU: Mark DS instructions as fixed size (PR #156388)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/156388.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/DSInstructions.td (+1) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/DSInstructions.td b/llvm/lib/Target/AMDGPU/DSInstructions.td
index 3703133126b0f..7a22ae0c401e2 100644
--- a/llvm/lib/Target/AMDGPU/DSInstructions.td
+++ b/llvm/lib/Target/AMDGPU/DSInstructions.td
@@ -19,6 +19,7 @@ class DS_Pseudo <string opName, dag outs, dag ins, string asmOps, list<dag> patt
   // Most instruction load and store data, so set this as the default.
   let mayLoad = 1;
   let mayStore = 1;
+  let FixedSize = true;
 
   let hasSideEffects = 0;
   let SchedRW = [WriteLDS];

``````````

</details>


https://github.com/llvm/llvm-project/pull/156388