[llvm] 7f57c97 - [ThinLTOBitcodeWriter] Mark pass as required

[Arthur Eubanks via llvm-commits]

Author: Arthur Eubanks
Date: 2022-09-06T14:47:34-07:00
New Revision: 7f57c97d3083abd21e7bdc658f24e69405ef9199

URL: https://github.com/llvm/llvm-project/commit/7f57c97d3083abd21e7bdc658f24e69405ef9199
DIFF: https://github.com/llvm/llvm-project/commit/7f57c97d3083abd21e7bdc658f24e69405ef9199.diff

LOG: [ThinLTOBitcodeWriter] Mark pass as required

Or else with -opt-bisect-limit we don't write ThinLTO bitcode.

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D133378

Added: 
    

Modified: 
    llvm/include/llvm/Transforms/IPO/ThinLTOBitcodeWriter.h
    llvm/test/Other/opt-bisect-new-pass-manager.ll

Removed: 
    


################################################################################
diff  --git a/llvm/include/llvm/Transforms/IPO/ThinLTOBitcodeWriter.h b/llvm/include/llvm/Transforms/IPO/ThinLTOBitcodeWriter.h
index 469cf2bc50115..9bcb01c9dbe43 100644
--- a/llvm/include/llvm/Transforms/IPO/ThinLTOBitcodeWriter.h
+++ b/llvm/include/llvm/Transforms/IPO/ThinLTOBitcodeWriter.h
@@ -34,6 +34,8 @@ class ThinLTOBitcodeWriterPass
       : OS(OS), ThinLinkOS(ThinLinkOS) {}
 
   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
+
+  static bool isRequired() { return true; }
 };
 
 } // namespace llvm

diff  --git a/llvm/test/Other/opt-bisect-new-pass-manager.ll b/llvm/test/Other/opt-bisect-new-pass-manager.ll
index 91450472398e0..ed6f973e761ab 100644
--- a/llvm/test/Other/opt-bisect-new-pass-manager.ll
+++ b/llvm/test/Other/opt-bisect-new-pass-manager.ll
@@ -99,6 +99,10 @@
 ; RUN: opt %s -opt-bisect-limit=0 -passes=early-cse -S | FileCheck %s -check-prefix=CHECK-OUTPUT
 ; CHECK-OUTPUT: define void @f1
 
+; Make sure we write ThinLTO bitcode
+; RUN: opt %s -opt-bisect-limit=0 -disable-verify -thinlto-bc -o /dev/null 2>&1 | FileCheck --allow-empty %s -check-prefix=CHECK-THINLTO
+; CHECK-THINLTO-NOT: NOT running pass
+
 declare i32 @g()
 
 define void @f1() {