6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-31 10:34:17 +00:00
Code Issues Projects Releases Wiki Activity

Reset some of the target options which affect code generation.

Browse Source 
This doesn't reset all of the target options within the TargetOptions
object. This is because some of those are ABI-specific and must be determined if
it's okay to change those on the fly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176986 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2013-03-13 22:26:59 +00:00
parent 33905b2a34
commit 4cb1f5f406
3 changed files with 31 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/llvm/Target/TargetMachine.h
View File

@ -95,7 +95,10 @@ public:
/// a reference to that target's TargetSubtargetInfo-derived member variable.
virtual const TargetSubtargetInfo *getSubtargetImpl() const { return 0; }
TargetOptions Options;
mutable TargetOptions Options;
/// \brief Reset the target options based on the function's attributes.
void resetTargetOptions(const MachineFunction *MF) const;
// Interfaces to the major aspects of target machine information:
// -- Instruction opcode and operand information

1
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
View File

@ -362,6 +362,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
TargetSubtargetInfo &ST =
const_cast<TargetSubtargetInfo&>(TM.getSubtarget<TargetSubtargetInfo>());
ST.resetSubtargetFeatures(MF);
TM.resetTargetOptions(MF);
DEBUG(dbgs() << "\n\n\n=== " << Fn.getName() << "\n");

26
lib/Target/TargetMachine.cpp
View File

@ -12,6 +12,8 @@
//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetMachine.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalAlias.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/GlobalVariable.h"
@ -61,6 +63,30 @@ TargetMachine::~TargetMachine() {
delete AsmInfo;
}
/// \brief Reset the target options based on the function's attributes.
void TargetMachine::resetTargetOptions(const MachineFunction *MF) const {
const Function *F = MF->getFunction();
TargetOptions &TO = MF->getTarget().Options;
#define RESET_OPTION(X, Y) \
do { \
if (F->hasFnAttribute(Y)) \
TO.X = \
(F->getAttributes(). \
getAttribute(AttributeSet::FunctionIndex, \
Y).getValueAsString() == "true"); \
} while (0)
RESET_OPTION(NoFramePointerElim, "no-frame-pointer-elim");
RESET_OPTION(NoFramePointerElimNonLeaf, "no-frame-pointer-elim-non-leaf");
RESET_OPTION(LessPreciseFPMADOption, "less-precise-fpmad");
RESET_OPTION(UnsafeFPMath, "unsafe-fp-math");
RESET_OPTION(NoInfsFPMath, "no-infs-fp-math");
RESET_OPTION(NoNaNsFPMath, "no-nans-fp-math");
RESET_OPTION(UseSoftFloat, "use-soft-float");
RESET_OPTION(DisableTailCalls, "disable-tail-calls");
}
/// getRelocationModel - Returns the code generation relocation model. The
/// choices are static, PIC, and dynamic-no-pic, and target default.
Reloc::Model TargetMachine::getRelocationModel() const {