Refactor TargetOptions initialization into a single place.

The same code (~20 lines) for initializing a TargetOptions object from CodeGen
cmdline flags is duplicated 4 times in 4 different tools. This patch moves it
into a utility function.

Since the CodeGen/CommandFlags.h file defines cl::opt flags in a header, it's
a bit of a touchy situation because we should only link them into tools. So this
patch puts the init function in the header.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201699 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 27 insertions, 0 deletions

diff --git a/include/llvm/CodeGen/CommandFlags.h b/include/llvm/CodeGen/CommandFlags.h
index 7b4dd5efb2..02a4bb5537 100644
--- a/include/llvm/CodeGen/CommandFlags.h
+++ b/include/llvm/CodeGen/CommandFlags.h
@@ -19,6 +19,7 @@
 #include "llvm/Support/CodeGen.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
 #include <string>
 using namespace llvm;
 
@@ -207,4 +208,30 @@ cl::opt<std::string> StartAfter("start-after",
                           cl::value_desc("pass-name"),
                           cl::init(""));
 
+// Common utility function tightly tied to the options listed here. Initializes
+// a TargetOptions object with CodeGen flags and returns it.
+static inline TargetOptions InitTargetOptionsFromCodeGenFlags() {
+  TargetOptions Options;
+  Options.LessPreciseFPMADOption = EnableFPMAD;
+  Options.NoFramePointerElim = DisableFPElim;
+  Options.AllowFPOpFusion = FuseFPOps;
+  Options.UnsafeFPMath = EnableUnsafeFPMath;
+  Options.NoInfsFPMath = EnableNoInfsFPMath;
+  Options.NoNaNsFPMath = EnableNoNaNsFPMath;
+  Options.HonorSignDependentRoundingFPMathOption =
+      EnableHonorSignDependentRoundingFPMath;
+  Options.UseSoftFloat = GenerateSoftFloatCalls;
+  if (FloatABIForCalls != FloatABI::Default)
+    Options.FloatABIType = FloatABIForCalls;
+  Options.NoZerosInBSS = DontPlaceZerosInBSS;
+  Options.GuaranteedTailCallOpt = EnableGuaranteedTailCallOpt;
+  Options.DisableTailCalls = DisableTailCalls;
+  Options.StackAlignmentOverride = OverrideStackAlignment;
+  Options.TrapFuncName = TrapFuncName;
+  Options.PositionIndependentExecutable = EnablePIE;
+  Options.EnableSegmentedStacks = SegmentedStacks;
+  Options.UseInitArray = UseInitArray;
+  return Options;
+}
+
 #endif