[PATCH] D90815: -fbasic-block-sections=list=: Suppress output if failed to open the file

[Fangrui Song via Phabricator via cfe-commits]

MaskRay created this revision.
MaskRay added reviewers: dblaikie, tmsriram.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
MaskRay requested review of this revision.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D90815

Files:
  clang/lib/CodeGen/BackendUtil.cpp
  clang/test/CodeGen/basic-block-sections.c


Index: clang/test/CodeGen/basic-block-sections.c
===================================================================
--- clang/test/CodeGen/basic-block-sections.c
+++ clang/test/CodeGen/basic-block-sections.c
@@ -6,7 +6,9 @@
 // RUN: %clang_cc1 -triple x86_64 -S -fbasic-block-sections=all -o - < %s | FileCheck %s --check-prefix=BB_WORLD --check-prefix=BB_ALL
 // RUN: %clang_cc1 -triple x86_64 -S -fbasic-block-sections=list=%S/Inputs/basic-block-sections.funcnames -o - < %s | FileCheck %s --check-prefix=BB_WORLD --check-prefix=BB_LIST
 // RUN: %clang_cc1 -triple x86_64 -S -fbasic-block-sections=all -funique-basic-block-section-names -o - < %s | FileCheck %s --check-prefix=UNIQUE
-// RUN: not %clang_cc1 -fbasic-block-sections=list= -emit-llvm -o - %s 2>&1 | FileCheck %s --check-prefix=ERROR
+// RUN: rm -f %t
+// RUN: not %clang_cc1 -fbasic-block-sections=list= -emit-obj -o %t %s 2>&1 | FileCheck %s --check-prefix=ERROR
+// RUN: not ls %t
 
 int world(int a) {
   if (a > 10)
Index: clang/lib/CodeGen/BackendUtil.cpp
===================================================================
--- clang/lib/CodeGen/BackendUtil.cpp
+++ clang/lib/CodeGen/BackendUtil.cpp
@@ -446,7 +446,7 @@
   }
 }
 
-static void initTargetOptions(DiagnosticsEngine &Diags,
+static bool initTargetOptions(DiagnosticsEngine &Diags,
                               llvm::TargetOptions &Options,
                               const CodeGenOptions &CodeGenOpts,
                               const clang::TargetOptions &TargetOpts,
@@ -517,11 +517,12 @@
   if (Options.BBSections == llvm::BasicBlockSection::List) {
     ErrorOr<std::unique_ptr<MemoryBuffer>> MBOrErr =
         MemoryBuffer::getFile(CodeGenOpts.BBSections.substr(5));
-    if (!MBOrErr)
+    if (!MBOrErr) {
       Diags.Report(diag::err_fe_unable_to_load_basic_block_sections_file)
           << MBOrErr.getError().message();
-    else
-      Options.BBSectionsFuncListBuf = std::move(*MBOrErr);
+      return false;
+    }
+    Options.BBSectionsFuncListBuf = std::move(*MBOrErr);
   }
 
   Options.EnableMachineFunctionSplitter = CodeGenOpts.SplitMachineFunctions;
@@ -572,6 +573,8 @@
           Entry.IgnoreSysRoot ? Entry.Path : HSOpts.Sysroot + Entry.Path);
   Options.MCOptions.Argv0 = CodeGenOpts.Argv0;
   Options.MCOptions.CommandLineArgs = CodeGenOpts.CommandLineArgs;
+
+  return true;
 }
 
 static Optional<GCOVOptions> getGCOVOptions(const CodeGenOptions &CodeGenOpts,
@@ -858,7 +861,9 @@
   CodeGenOpt::Level OptLevel = getCGOptLevel(CodeGenOpts);
 
   llvm::TargetOptions Options;
-  initTargetOptions(Diags, Options, CodeGenOpts, TargetOpts, LangOpts, HSOpts);
+  if (!initTargetOptions(Diags, Options, CodeGenOpts, TargetOpts, LangOpts,
+                         HSOpts))
+    return;
   TM.reset(TheTarget->createTargetMachine(Triple, TargetOpts.CPU, FeaturesStr,
                                           Options, RM, CM, OptLevel));
 }


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