commit cff5feff6fd6e18e73b97de41f9aa5da23ceee95
author Duncan P. N. Exon Smith <dexonsmith@apple.com> Tue Sep 15 23:05:59 2015 +0000
committer Duncan P. N. Exon Smith <dexonsmith@apple.com> Tue Sep 15 23:05:59 2015 +0000
tree 33ceb04978a9c105fba18d6d4a3b9056c0f91330
parent c1603b64937c90f6b4515fe84f5f3c8779b56925

Reapply "LTO: Disable extra verify runs in release builds"

This reverts commit r247730, effectively reapplying r247729.  This time
I have an lld commit ready to follow.

llvm-svn: 247735

llvm/tools/lto/lto.cpp

diff --git a/llvm/tools/lto/lto.cpp b/llvm/tools/lto/lto.cpp
index 8f62929..6267508 100644
--- a/llvm/tools/lto/lto.cpp
+++ b/llvm/tools/lto/lto.cpp
@@ -43,6 +43,16 @@
 DisableLTOVectorization("disable-lto-vectorization", cl::init(false),
   cl::desc("Do not run loop or slp vectorization during LTO"));
 
+#ifdef NDEBUG
+static bool VerifyByDefault = false;
+#else
+static bool VerifyByDefault = true;
+#endif
+
+static cl::opt<bool> DisableVerify(
+    "disable-llvm-verifier", cl::init(!VerifyByDefault),
+    cl::desc("Don't run the LLVM verifier during the optimization pipeline"));
+
 // Holds most recent error string.
 // *** Not thread safe ***
 static std::string sLastErrorString;
@@ -321,8 +331,9 @@
 const void *lto_codegen_compile(lto_code_gen_t cg, size_t *length) {
   maybeParseOptions(cg);
   LibLTOCodeGenerator *CG = unwrap(cg);
-  CG->NativeObjectFile = CG->compile(DisableInline, DisableGVNLoadPRE,
-                                     DisableLTOVectorization, sLastErrorString);
+  CG->NativeObjectFile =
+      CG->compile(DisableVerify, DisableInline, DisableGVNLoadPRE,
+                  DisableLTOVectorization, sLastErrorString);
   if (!CG->NativeObjectFile)
     return nullptr;
   *length = CG->NativeObjectFile->getBufferSize();
@@ -331,9 +342,8 @@
 
 bool lto_codegen_optimize(lto_code_gen_t cg) {
   maybeParseOptions(cg);
-  return !unwrap(cg)->optimize(DisableInline,
-                               DisableGVNLoadPRE, DisableLTOVectorization,
-                               sLastErrorString);
+  return !unwrap(cg)->optimize(DisableVerify, DisableInline, DisableGVNLoadPRE,
+                               DisableLTOVectorization, sLastErrorString);
 }
 
 const void *lto_codegen_compile_optimized(lto_code_gen_t cg, size_t *length) {
@@ -349,7 +359,7 @@
 bool lto_codegen_compile_to_file(lto_code_gen_t cg, const char **name) {
   maybeParseOptions(cg);
   return !unwrap(cg)->compile_to_file(
-      name, DisableInline, DisableGVNLoadPRE,
+      name, DisableVerify, DisableInline, DisableGVNLoadPRE,
       DisableLTOVectorization, sLastErrorString);
 }