Add a -no-implicit-float flag. This acts like -soft-float, but may generate

floating point instructions that are explicitly specified by the user.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66719 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 60 insertions, 64 deletions

diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 49f1e4dfaa..2aed083341 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -29,6 +29,7 @@ namespace llvm {
   bool FiniteOnlyFPMathOption;
   bool HonorSignDependentRoundingFPMathOption;
   bool UseSoftFloat;
+  bool NoImplicitFloat;
   bool NoZerosInBSS;
   bool ExceptionHandling;
   bool UnwindTablesMandatory;
@@ -43,61 +44,64 @@ namespace llvm {
   bool DisableRedZone;
 }
 
-static cl::opt<bool, true> PrintCode("print-machineinstrs",
+static cl::opt<bool, true>
+PrintCode("print-machineinstrs",
   cl::desc("Print generated machine code"),
   cl::location(PrintMachineCode), cl::init(false));
-
 static cl::opt<bool, true>
 DisableFPElim("disable-fp-elim",
-              cl::desc("Disable frame pointer elimination optimization"),
-              cl::location(NoFramePointerElim),
-              cl::init(false));
+  cl::desc("Disable frame pointer elimination optimization"),
+  cl::location(NoFramePointerElim),
+  cl::init(false));
 static cl::opt<bool, true>
 DisableExcessPrecision("disable-excess-fp-precision",
-             cl::desc("Disable optimizations that may increase FP precision"),
-             cl::location(NoExcessFPPrecision),
-             cl::init(false));
+  cl::desc("Disable optimizations that may increase FP precision"),
+  cl::location(NoExcessFPPrecision),
+  cl::init(false));
 static cl::opt<bool, true>
 EnableUnsafeFPMath("enable-unsafe-fp-math",
-             cl::desc("Enable optimizations that may decrease FP precision"),
-             cl::location(UnsafeFPMath),
-             cl::init(false));
+  cl::desc("Enable optimizations that may decrease FP precision"),
+  cl::location(UnsafeFPMath),
+  cl::init(false));
 static cl::opt<bool, true>
 EnableFiniteOnlyFPMath("enable-finite-only-fp-math",
-             cl::desc("Enable optimizations that assumes non- NaNs / +-Infs"),
-             cl::location(FiniteOnlyFPMathOption),
-             cl::init(false));
-static cl::opt<bool, true>
-EnableHonorSignDependentRoundingFPMath(cl::Hidden,
-             "enable-sign-dependent-rounding-fp-math",
-     cl::desc("Force codegen to assume rounding mode can change dynamically"),
-             cl::location(HonorSignDependentRoundingFPMathOption),
-             cl::init(false));
-
+  cl::desc("Enable optimizations that assumes non- NaNs / +-Infs"),
+  cl::location(FiniteOnlyFPMathOption),
+  cl::init(false));
+static cl::opt<bool, true>
+EnableHonorSignDependentRoundingFPMath("enable-sign-dependent-rounding-fp-math",
+  cl::Hidden,
+  cl::desc("Force codegen to assume rounding mode can change dynamically"),
+  cl::location(HonorSignDependentRoundingFPMathOption),
+  cl::init(false));
 static cl::opt<bool, true>
 GenerateSoftFloatCalls("soft-float",
-             cl::desc("Generate software floating point library calls"),
-             cl::location(UseSoftFloat),
-             cl::init(false));
+  cl::desc("Generate software floating point library calls"),
+  cl::location(UseSoftFloat),
+  cl::init(false));
+static cl::opt<bool, true>
+GenerateNoImplicitFloats("no-implicit-float",
+  cl::desc("Don't generate implicit floating point instructions (x86-only)"),
+  cl::location(NoImplicitFloat),
+  cl::init(false));
 static cl::opt<bool, true>
 DontPlaceZerosInBSS("nozero-initialized-in-bss",
-            cl::desc("Don't place zero-initialized symbols into bss section"),
-            cl::location(NoZerosInBSS),
-            cl::init(false));
+  cl::desc("Don't place zero-initialized symbols into bss section"),
+  cl::location(NoZerosInBSS),
+  cl::init(false));
 static cl::opt<bool, true>
 EnableExceptionHandling("enable-eh",
-             cl::desc("Emit DWARF exception handling (default if target supports)"),
-             cl::location(ExceptionHandling),
-             cl::init(false));
+  cl::desc("Emit DWARF exception handling (default if target supports)"),
+  cl::location(ExceptionHandling),
+  cl::init(false));
 static cl::opt<bool, true>
 EnableUnwindTables("unwind-tables",
-             cl::desc("Generate unwinding tables for all functions"),
-             cl::location(UnwindTablesMandatory),
-             cl::init(false));
+  cl::desc("Generate unwinding tables for all functions"),
+  cl::location(UnwindTablesMandatory),
+  cl::init(false));
 
 static cl::opt<llvm::Reloc::Model, true>
-DefRelocationModel(
-  "relocation-model",
+DefRelocationModel("relocation-model",
   cl::desc("Choose relocation model"),
   cl::location(RelocationModel),
   cl::init(Reloc::Default),
@@ -112,8 +116,7 @@ DefRelocationModel(
                "Relocatable external references, non-relocatable code"),
     clEnumValEnd));
 static cl::opt<llvm::CodeModel::Model, true>
-DefCodeModel(
-  "code-model",
+DefCodeModel("code-model",
   cl::desc("Choose code model"),
   cl::location(CMModel),
   cl::init(CodeModel::Default),
@@ -129,47 +132,40 @@ DefCodeModel(
     clEnumValN(CodeModel::Large, "large",
                "Large code model"),
     clEnumValEnd));
-
 static cl::opt<bool, true>
 EnablePerformTailCallOpt("tailcallopt",
-                         cl::desc("Turn on tail call optimization."),
-                         cl::location(PerformTailCallOpt),
-                         cl::init(false));
-
+  cl::desc("Turn on tail call optimization."),
+  cl::location(PerformTailCallOpt),
+  cl::init(false));
 static cl::opt<unsigned, true>
 OverrideStackAlignment("stack-alignment",
-                       cl::desc("Override default stack alignment"),
-                       cl::location(StackAlignment),
-                       cl::init(0));
-
+  cl::desc("Override default stack alignment"),
+  cl::location(StackAlignment),
+  cl::init(0));
 static cl::opt<bool, true>
 EnableRealignStack("realign-stack",
-                   cl::desc("Realign stack if needed"),
-                   cl::location(RealignStack),
-                   cl::init(true));
-
+  cl::desc("Realign stack if needed"),
+  cl::location(RealignStack),
+  cl::init(true));
 static cl::opt<bool, true>
 AsmVerbose("asm-verbose", cl::desc("Add comments to directives."),
-           cl::location(VerboseAsm),
-           cl::init(false));
-
+  cl::location(VerboseAsm),
+  cl::init(false));
 static cl::opt<bool, true>
 DisableSwitchTables(cl::Hidden, "disable-jump-tables", 
-           cl::desc("Do not generate jump tables."),
-           cl::location(DisableJumpTables),
-           cl::init(false));
-
+  cl::desc("Do not generate jump tables."),
+  cl::location(DisableJumpTables),
+  cl::init(false));
 static cl::opt<bool, true>
 EnableStrongPHIElim(cl::Hidden, "strong-phi-elim",
-           cl::desc("Use strong PHI elimination."),
-           cl::location(StrongPHIElim),
-           cl::init(false));
-
+  cl::desc("Use strong PHI elimination."),
+  cl::location(StrongPHIElim),
+  cl::init(false));
 static cl::opt<bool, true>
 DisableRedZoneOption("disable-red-zone",
-           cl::desc("Do not emit code that uses the red zone."),
-           cl::location(DisableRedZone),
-           cl::init(false));
+  cl::desc("Do not emit code that uses the red zone."),
+  cl::location(DisableRedZone),
+  cl::init(false));
 
 //---------------------------------------------------------------------------
 // TargetMachine Class