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-rw-r--r--llvm_mode/split-compares-pass.so.cc11
1 files changed, 7 insertions, 4 deletions
diff --git a/llvm_mode/split-compares-pass.so.cc b/llvm_mode/split-compares-pass.so.cc
index e16993d6..fe021071 100644
--- a/llvm_mode/split-compares-pass.so.cc
+++ b/llvm_mode/split-compares-pass.so.cc
@@ -1243,13 +1243,16 @@ bool SplitComparesTransform::runOnModule(Module &M) {
 
   simplifyIntSignedness(M);
 
-  if (getenv("AFL_QUIET") == NULL)
+  if (isatty(2) && getenv("AFL_QUIET") == NULL) {
+
     errs() << "Split-compare-pass by laf.intel@gmail.com, extended by "
               "heiko@hexco.de\n";
 
-  if (enableFPSplit)
-    errs() << "Split-floatingpoint-compare-pass: " << splitFPCompares(M)
-           << " FP comparisons splitted\n";
+    if (enableFPSplit)
+      errs() << "Split-floatingpoint-compare-pass: " << splitFPCompares(M)
+             << " FP comparisons splitted\n";
+
+  }
 
   switch (bitw) {