[FileCheck] Implement --ignore-case option.

The FileCheck utility is enhanced to support a `--ignore-case`
option. This is useful in cases where the output of Unix tools
differs in case (e.g. case not specified by Posix).

Reviewers: Bigcheese, jakehehrlich, rupprecht, espindola, alexshap, jhenderson, MaskRay

Differential Revision: https://reviews.llvm.org/D68146

llvm-svn: 374538

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/utils/FileCheck/FileCheck.cpp b/llvm/utils/FileCheck/FileCheck.cpp
index 8718be28ac9..44d5be13751 100644
--- a/llvm/utils/FileCheck/FileCheck.cpp
+++ b/llvm/utils/FileCheck/FileCheck.cpp
@@ -48,6 +48,10 @@ static cl::opt<bool> NoCanonicalizeWhiteSpace(
     "strict-whitespace",
     cl::desc("Do not treat all horizontal whitespace as equivalent"));
 
+static cl::opt<bool> IgnoreCase(
+    "ignore-case",
+    cl::desc("Use case-insensitive matching"));
+
 static cl::list<std::string> ImplicitCheckNot(
     "implicit-check-not",
     cl::desc("Add an implicit negative check with this pattern to every\n"
@@ -555,6 +559,7 @@ int main(int argc, char **argv) {
   Req.VerboseVerbose = VerboseVerbose;
   Req.NoCanonicalizeWhiteSpace = NoCanonicalizeWhiteSpace;
   Req.MatchFullLines = MatchFullLines;
+  Req.IgnoreCase = IgnoreCase;
 
   if (VerboseVerbose)
     Req.Verbose = true;