commit 15c9a1f60c2e9d9cb854d5c0072755be91d1cc96
author Benjamin Kramer <benny.kra@googlemail.com> Wed Sep 21 21:47:35 2011 +0000
committer Benjamin Kramer <benny.kra@googlemail.com> Wed Sep 21 21:47:35 2011 +0000
tree a081f9a51710ec2a4f8a9b0680ac0b50b5b9d71b
parent fe59d853c6bee18aeca1da5f703fc442068853a7

X86Disassembler: if verbose logging is going to nulls(), disable logging completely.

Otherwise we'll spend a ridiculous amount of time pretty printing debug output and then discarding it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140276 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/Disassembler/X86Disassembler.cpp

diff --git a/lib/Target/X86/Disassembler/X86Disassembler.cpp b/lib/Target/X86/Disassembler/X86Disassembler.cpp
index 884e690..3aacb20e 100644
--- a/lib/Target/X86/Disassembler/X86Disassembler.cpp
+++ b/lib/Target/X86/Disassembler/X86Disassembler.cpp
@@ -117,11 +117,15 @@
                                        raw_ostream &vStream,
                                        raw_ostream &cStream) const {
   InternalInstruction internalInstr;
+
+  dlog_t loggerFn = logger;
+  if (&vStream == &nulls())
+    loggerFn = 0; // Disable logging completely if it's going to nulls().
   
   int ret = decodeInstruction(&internalInstr,
                               regionReader,
                               (void*)&region,
-                              logger,
+                              loggerFn,
                               (void*)&vStream,
                               address,
                               fMode);