[PATCH] D120025: [AMDGPU] Return better Changed status from SILowerControlFlow

[Jay Foad via Phabricator via llvm-commits]

foad created this revision.
foad added a reviewer: piotr.
Herald added subscribers: kerbowa, hiraditya, t-tye, tpr, dstuttard, yaxunl, nhaehnle, jvesely, kzhuravl, arsenm.
foad requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D120025

Files:
  llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp


Index: llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
===================================================================
--- llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
+++ llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
@@ -865,6 +865,7 @@
     }
   }
 
+  bool Changed = false;
   MachineFunction::iterator NextBB;
   for (MachineFunction::iterator BI = MF.begin();
        BI != MF.end(); BI = NextBB) {
@@ -886,6 +887,7 @@
       case AMDGPU::SI_LOOP:
       case AMDGPU::SI_END_CF:
         SplitMBB = process(MI);
+        Changed = true;
         break;
 
       // FIXME: find a better place for this
@@ -894,6 +896,7 @@
         lowerInitExec(MBB, MI);
         if (LIS)
           LIS->removeAllRegUnitsForPhysReg(AMDGPU::EXEC);
+        Changed = true;
         break;
 
       default:
@@ -913,5 +916,5 @@
   LoweredIf.clear();
   KillBlocks.clear();
 
-  return true;
+  return Changed;
 }


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D120025.409544.patch
Type: text/x-patch
Size: 903 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220217/58508d9a/attachment.bin>