Add optimize-for-size knob.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48793 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Target/TargetOptions.h b/include/llvm/Target/TargetOptions.h
index 554a32b..72bb272 100644
--- a/include/llvm/Target/TargetOptions.h
+++ b/include/llvm/Target/TargetOptions.h
@@ -78,6 +78,10 @@
/// on the commandline. When the flag is on, the target will perform tail call
/// optimization (pop the caller's stack) providing it supports it.
extern bool PerformTailCallOpt;
+
+ /// OptimizeForSize - When this flags is set, code generator avoids optimization
+ /// that increases size.
+ extern bool OptimizeForSize;
} // End llvm namespace
#endif
diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 15164ca2..b9a6878 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -34,6 +34,7 @@
Reloc::Model RelocationModel;
CodeModel::Model CMModel;
bool PerformTailCallOpt;
+ bool OptimizeForSize;
}
namespace {
cl::opt<bool, true> PrintCode("print-machineinstrs",
@@ -123,6 +124,11 @@
cl::desc("Turn on tail call optimization."),
cl::location(PerformTailCallOpt),
cl::init(false));
+ cl::opt<bool, true>
+ EnableOptimizeForSize("optimizeforsize",
+ cl::desc("Optimize for size."),
+ cl::location(OptimizeForSize),
+ cl::init(false));
}
//---------------------------------------------------------------------------