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Added -march=thumb; removed -enable-thumb.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34521 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-02-23 03:14:31 +00:00
parent cdc694440b
commit 04321f70f5
4 changed files with 36 additions and 20 deletions
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10
lib/Target/ARM/ARMSubtarget.cpp
View File

@ -14,16 +14,12 @@
#include "ARMSubtarget.h"
#include "ARMGenSubtarget.inc"
#include "llvm/Module.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
// FIXME: this is temporary.
static cl::opt<bool> Thumb("enable-thumb",
cl::desc("Switch to thumb mode in ARM backend"));
ARMSubtarget::ARMSubtarget(const Module &M, const std::string &FS)
ARMSubtarget::ARMSubtarget(const Module &M, const std::string &FS, bool thumb)
: ARMArchVersion(V4T)
, HasVFP2(false)
, IsThumb(thumb)
, UseThumbBacktraces(false)
, IsR9Reserved(false)
, stackAlignment(4)
@ -36,8 +32,6 @@ ARMSubtarget::ARMSubtarget(const Module &M, const std::string &FS)
// Parse features string.
ParseSubtargetFeatures(FS, CPU);
IsThumb = Thumb;
// Set the boolean corresponding to the current target triple, or the default
// if one cannot be determined, to true.
const std::string& TT = M.getTargetTriple();

2
lib/Target/ARM/ARMSubtarget.h
View File

@ -60,7 +60,7 @@ protected:
/// This constructor initializes the data members to match that
/// of the specified module.
///
ARMSubtarget(const Module &M, const std::string &FS);
ARMSubtarget(const Module &M, const std::string &FS, bool thumb);
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.

33
lib/Target/ARM/ARMTargetMachine.cpp
View File

@ -27,21 +27,37 @@ static cl::opt<bool> DisableLdStOpti("disable-arm-loadstore-opti", cl::Hidden,
namespace {
// Register the target.
RegisterTarget<ARMTargetMachine> X("arm", " ARM");
RegisterTarget<ARMTargetMachine> X("arm", " ARM");
RegisterTarget<ThumbTargetMachine> Y("thumb", " Thumb");
}
/// TargetMachine ctor - Create an ILP32 architecture model
/// ThumbTargetMachine - Create an Thumb architecture model.
///
ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS)
: Subtarget(M, FS),
unsigned ThumbTargetMachine::getModuleMatchQuality(const Module &M) {
std::string TT = M.getTargetTriple();
if (TT.size() >= 6 && std::string(TT.begin(), TT.begin()+6) == "thumb-")
return 20;
return M.getPointerSize() == Module::Pointer32;
}
ThumbTargetMachine::ThumbTargetMachine(const Module &M, const std::string &FS)
: ARMTargetMachine(M, FS, true) {
}
/// TargetMachine ctor - Create an ARM architecture model.
///
ARMTargetMachine::ARMTargetMachine(const Module &M, const std::string &FS,
bool isThumb)
: Subtarget(M, FS, isThumb),
DataLayout(Subtarget.isAPCS_ABI() ?
// APCS ABI
(Subtarget.isThumb() ?
(isThumb ?
std::string("e-p:32:32-f64:32:32-i64:32:32-"
"i16:16:32-i8:8:32-i1:8:32-a:0:32") :
std::string("e-p:32:32-f64:32:32-i64:32:32")) :
// AAPCS ABI
(Subtarget.isThumb() ?
(isThumb ?
std::string("e-p:32:32-f64:64:64-i64:64:64-"
"i16:16:32-i8:8:32-i1:8:32-a:0:32") :
std::string("e-p:32:32-f64:64:64-i64:64:64"))),
@ -53,10 +69,7 @@ unsigned ARMTargetMachine::getModuleMatchQuality(const Module &M) {
if (TT.size() >= 4 && std::string(TT.begin(), TT.begin()+4) == "arm-")
return 20;
if (M.getPointerSize() == Module::Pointer32)
return 1;
else
return 0;
return M.getPointerSize() == Module::Pointer32;
}

11
lib/Target/ARM/ARMTargetMachine.h
View File

@ -32,7 +32,7 @@ class ARMTargetMachine : public LLVMTargetMachine {
ARMInstrInfo InstrInfo;
ARMFrameInfo FrameInfo;
public:
ARMTargetMachine(const Module &M, const std::string &FS);
ARMTargetMachine(const Module &M, const std::string &FS, bool isThumb = false);
virtual const ARMInstrInfo *getInstrInfo() const { return &InstrInfo; }
virtual const TargetFrameInfo *getFrameInfo() const { return &FrameInfo; }
@ -52,6 +52,15 @@ public:
std::ostream &Out);
};
/// ThumbTargetMachine - Thumb target machine.
///
class ThumbTargetMachine : public ARMTargetMachine {
public:
ThumbTargetMachine(const Module &M, const std::string &FS);
static unsigned getModuleMatchQuality(const Module &M);
};
} // end namespace llvm
#endif