//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Constant.h"
-#include "llvm/DerivedTypes.h"
+#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
-/// findTiedToSrcOperand - Returns the operand that is tied to the specified
-/// dest operand. Returns -1 if there isn't one.
-int TargetInstrDescriptor::findTiedToSrcOperand(unsigned OpNum) const {
- for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
- if (i == OpNum)
- continue;
- if (getOperandConstraint(i, TOI::TIED_TO) == (int)OpNum)
- return i;
- }
- return -1;
+//===----------------------------------------------------------------------===//
+// TargetOperandInfo
+//===----------------------------------------------------------------------===//
+
+/// getRegClass - Get the register class for the operand, handling resolution
+/// of "symbolic" pointer register classes etc. If this is not a register
+/// operand, this returns null.
+const TargetRegisterClass *
+TargetOperandInfo::getRegClass(const TargetRegisterInfo *TRI) const {
+ if (isLookupPtrRegClass())
+ return TRI->getPointerRegClass(RegClass);
+ return TRI->getRegClass(RegClass);
}
+//===----------------------------------------------------------------------===//
+// TargetInstrInfo
+//===----------------------------------------------------------------------===//
-TargetInstrInfo::TargetInstrInfo(const TargetInstrDescriptor* Desc,
+TargetInstrInfo::TargetInstrInfo(const TargetInstrDesc* Desc,
unsigned numOpcodes)
- : desc(Desc), NumOpcodes(numOpcodes) {
+ : Descriptors(Desc), NumOpcodes(numOpcodes) {
}
TargetInstrInfo::~TargetInstrInfo() {
}
+/// insertNoop - Insert a noop into the instruction stream at the specified
+/// point.
+void TargetInstrInfo::insertNoop(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MI) const {
+ llvm_unreachable("Target didn't implement insertNoop!");
+}
+
+
bool TargetInstrInfo::isUnpredicatedTerminator(const MachineInstr *MI) const {
- const TargetInstrDescriptor *TID = MI->getDesc();
- if (!TID->isTerminator()) return false;
+ const TargetInstrDesc &TID = MI->getDesc();
+ if (!TID.isTerminator()) return false;
// Conditional branch is a special case.
- if (TID->isBranch() && !TID->isBarrier())
+ if (TID.isBranch() && !TID.isBarrier())
return true;
- if (!TID->isPredicable())
+ if (!TID.isPredicable())
return true;
return !isPredicated(MI);
}
+
+
+/// Measure the specified inline asm to determine an approximation of its
+/// length.
+/// Comments (which run till the next SeparatorChar or newline) do not
+/// count as an instruction.
+/// Any other non-whitespace text is considered an instruction, with
+/// multiple instructions separated by SeparatorChar or newlines.
+/// Variable-length instructions are not handled here; this function
+/// may be overloaded in the target code to do that.
+unsigned TargetInstrInfo::getInlineAsmLength(const char *Str,
+ const TargetAsmInfo &TAI) const {
+
+
+ // Count the number of instructions in the asm.
+ bool atInsnStart = true;
+ unsigned Length = 0;
+ for (; *Str; ++Str) {
+ if (*Str == '\n' || *Str == TAI.getSeparatorChar())
+ atInsnStart = true;
+ if (atInsnStart && !isspace(*Str)) {
+ Length += TAI.getMaxInstLength();
+ atInsnStart = false;
+ }
+ if (atInsnStart && strncmp(Str, TAI.getCommentString(),
+ strlen(TAI.getCommentString())) == 0)
+ atInsnStart = false;
+ }
+
+ return Length;
+}