File backport-llvm-r210263 of Package llvm

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File backport-llvm-r210263 of Package llvm

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r210263 | uweigand | 2014-06-05 16:20:10 +0200 (Thu, 05 Jun 2014) | 7 lines

[SystemZ] Do not install IfConverter pass at -O0

When not optimizing, do not run the IfConverter pass, this makes
debugging more difficult (and causes a testsuite failure in
DebugInfo/unconditional-branch.ll).

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Index: lib/Target/SystemZ/SystemZTargetMachine.cpp
===================================================================
--- lib/Target/SystemZ/SystemZTargetMachine.cpp.orig
+++ lib/Target/SystemZ/SystemZTargetMachine.cpp
@@ -65,7 +65,8 @@ bool SystemZPassConfig::addInstSelector(
 }
 
 bool SystemZPassConfig::addPreSched2() {
-  if (getSystemZTargetMachine().getSubtargetImpl()->hasLoadStoreOnCond())
+  if (getOptLevel() != CodeGenOpt::None &&
+      getSystemZTargetMachine().getSubtargetImpl()->hasLoadStoreOnCond())
     addPass(&IfConverterID);
   return true;
 }

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