[AnnotationRemarks] Also generate annotation remarks when using -O0.

fhahn · fhahn · commit da224875b681 · 2020-12-21T17:05:26.000Z
The AnnotationRemarks pass is already run at the end of the module
pipeline. This patch also adds it before bailing out for -O0, so remarks
are also generated with -O0.
diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -547,6 +547,8 @@ void PassManagerBuilder::populateModulePassManager(
       // new unnamed globals.
       MPM.add(createNameAnonGlobalPass());
     }
+
+    MPM.add(createAnnotationRemarksLegacyPass());
     return;
   }
 
diff --git a/llvm/test/Other/opt-O0-pipeline.ll b/llvm/test/Other/opt-O0-pipeline.ll
@@ -22,6 +22,7 @@
 ; CHECK-NEXT:       Inliner for always_inline functions
 ;                   A No-Op Barrier Pass
 ; CHECK:            FunctionPass Manager
+; CHECK-NEXT:         Annotation Remarks
 ; CHECK-NEXT:         Module Verifier
 ; CHECK-NEXT:     Bitcode Writer
 

Original file line number	Diff line number	Diff line change
`@@ -547,6 +547,8 @@ void PassManagerBuilder::populateModulePassManager(`
`547`	`547`	`// new unnamed globals.`
`548`	`548`	`MPM.add(createNameAnonGlobalPass());`
`549`	`549`	`}`
	`550`	`+`
	`551`	`+ MPM.add(createAnnotationRemarksLegacyPass());`
`550`	`552`	`return;`
`551`	`553`	`}`
`552`	`554`