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Correctly handle instruction separators.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30935 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-10-13 17:56:02 +00:00
parent 4c7b07a66f
commit eea52d3297
1 changed files with 11 additions and 14 deletions
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25
lib/Target/PowerPC/PPCBranchSelector.cpp
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@ -20,12 +20,15 @@
#include "PPCInstrInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetAsmInfo.h"
#include <map>
using namespace llvm;
namespace {
struct VISIBILITY_HIDDEN PPCBSel : public MachineFunctionPass {
// OffsetMap - Mapping between BB and byte offset from start of function
/// OffsetMap - Mapping between BB and byte offset from start of function.
/// TODO: replace this with a vector, using the MBB idx as the key.
std::map<MachineBasicBlock*, unsigned> OffsetMap;
virtual bool runOnMachineFunction(MachineFunction &Fn);
@ -55,20 +58,14 @@ static unsigned getNumBytesForInstruction(MachineInstr *MI) {
return 8;
case PPC::IMPLICIT_DEF_GPRC: // no asm emitted
case PPC::IMPLICIT_DEF_G8RC: // no asm emitted
case PPC::IMPLICIT_DEF_F4: // no asm emitted
case PPC::IMPLICIT_DEF_F8: // no asm emitted
case PPC::IMPLICIT_DEF_F4: // no asm emitted
case PPC::IMPLICIT_DEF_F8: // no asm emitted
return 0;
case PPC::INLINEASM: // Inline Asm: Variable size.
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i)
if (MI->getOperand(i).isExternalSymbol()) {
const char *AsmStr = MI->getOperand(i).getSymbolName();
// Count the number of newline's in the asm string.
unsigned NumInstrs = 0;
for (; *AsmStr; ++AsmStr)
NumInstrs += *AsmStr == '\n';
return NumInstrs*4;
}
assert(0 && "INLINEASM didn't have format string??");
case PPC::INLINEASM: { // Inline Asm: Variable size.
MachineFunction *MF = MI->getParent()->getParent();
const char *AsmStr = MI->getOperand(0).getSymbolName();
return MF->getTarget().getTargetAsmInfo()->getInlineAsmLength(AsmStr);
}
default:
return 4; // PowerPC instructions are all 4 bytes
}