[llvm] 8926af4 - [Support] Use StringRef::starts_with (NFC)

[Kazu Hirata via llvm-commits]

Author: Kazu Hirata
Date: 2024-02-03T09:36:45-08:00
New Revision: 8926af426f202c158dd17b2034c044e85eceb108

URL: https://github.com/llvm/llvm-project/commit/8926af426f202c158dd17b2034c044e85eceb108
DIFF: https://github.com/llvm/llvm-project/commit/8926af426f202c158dd17b2034c044e85eceb108.diff

LOG: [Support] Use StringRef::starts_with (NFC)

Added: 
    

Modified: 
    llvm/lib/Support/VirtualFileSystem.cpp

Removed: 
    


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diff  --git a/llvm/lib/Support/VirtualFileSystem.cpp b/llvm/lib/Support/VirtualFileSystem.cpp
index c341170688037..051dd2a67d120 100644
--- a/llvm/lib/Support/VirtualFileSystem.cpp
+++ b/llvm/lib/Support/VirtualFileSystem.cpp
@@ -2782,10 +2782,9 @@ void JSONWriter::write(ArrayRef<YAMLVFSEntry> Entries,
 
     StringRef RPath = Entry.RPath;
     if (UseOverlayRelative) {
-      unsigned OverlayDirLen = OverlayDir.size();
-      assert(RPath.substr(0, OverlayDirLen) == OverlayDir &&
+      assert(RPath.starts_with(OverlayDir) &&
              "Overlay dir must be contained in RPath");
-      RPath = RPath.slice(OverlayDirLen, RPath.size());
+      RPath = RPath.slice(OverlayDir.size(), RPath.size());
     }
 
     bool IsCurrentDirEmpty = true;
@@ -2816,10 +2815,9 @@ void JSONWriter::write(ArrayRef<YAMLVFSEntry> Entries,
       }
       StringRef RPath = Entry.RPath;
       if (UseOverlayRelative) {
-        unsigned OverlayDirLen = OverlayDir.size();
-        assert(RPath.substr(0, OverlayDirLen) == OverlayDir &&
+        assert(RPath.starts_with(OverlayDir) &&
                "Overlay dir must be contained in RPath");
-        RPath = RPath.slice(OverlayDirLen, RPath.size());
+        RPath = RPath.slice(OverlayDir.size(), RPath.size());
       }
       if (!Entry.IsDirectory) {
         writeEntry(path::filename(Entry.VPath), RPath);