Add support for -march=c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11410 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index 2ce1e54..24a3a35 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -37,13 +37,14 @@
static cl::opt<bool> Force("f", cl::desc("Overwrite output files"));
-enum ArchName { noarch, x86, Sparc, PowerPC };
+enum ArchName { noarch, X86, Sparc, PowerPC, CBackend };
static cl::opt<ArchName>
Arch("march", cl::desc("Architecture to generate assembly for:"), cl::Prefix,
- cl::values(clEnumVal(x86, " IA-32 (Pentium and above)"),
- clEnumValN(Sparc, "sparc", " SPARC V9"),
- clEnumValN(PowerPC, "powerpc", " PowerPC"),
+ cl::values(clEnumValN(X86, "x86", " IA-32 (Pentium and above)"),
+ clEnumValN(Sparc, "sparc", " SPARC V9"),
+ clEnumValN(PowerPC, "powerpc", " PowerPC"),
+ clEnumValN(CBackend, "c", " C backend"),
0),
cl::init(noarch));
@@ -82,7 +83,10 @@
TargetMachine* (*TargetMachineAllocator)(const Module&,
IntrinsicLowering *) = 0;
switch (Arch) {
- case x86:
+ case CBackend:
+ TargetMachineAllocator = allocateCTargetMachine;
+ break;
+ case X86:
TargetMachineAllocator = allocateX86TargetMachine;
break;
case Sparc:
@@ -116,7 +120,8 @@
TargetMachineAllocator = allocatePowerPCTargetMachine;
#else
std::cerr << argv[0] << ": module does not specify a target to use. "
- << "You must use the -march option.\n";
+ << "You must use the -march option. If no native target is "
+ << "available, use -march=c to emit C code.\n";
return 1;
#endif
}