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Remove ScavengedRC from RegisterScavenging

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ScavengedRC was a dead private variable (set, but not otherwise used). No
functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177708 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2013-03-22 07:27:44 +00:00
parent c204410d6b
commit 9b294d4056
2 changed files with 1 additions and 8 deletions
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6
include/llvm/CodeGen/RegisterScavenging.h
View File

@ -48,10 +48,6 @@ class RegScavenger {
/// scavenged. That is, it is spilled to the special scavenging stack slot.
unsigned ScavengedReg;
/// ScavengedRC - Register class of the scavenged register.
///
const TargetRegisterClass *ScavengedRC;
/// ScavengeRestore - Instruction that restores the scavenged register from
/// stack.
const MachineInstr *ScavengeRestore;
@ -72,7 +68,7 @@ class RegScavenger {
public:
RegScavenger()
: MBB(NULL), NumPhysRegs(0), Tracking(false),
ScavengingFrameIndex(-1), ScavengedReg(0), ScavengedRC(NULL) {}
ScavengingFrameIndex(-1), ScavengedReg(0) {}
/// enterBasicBlock - Start tracking liveness from the begin of the specific
/// basic block.

3
lib/CodeGen/RegisterScavenging.cpp
View File

@ -46,7 +46,6 @@ bool RegScavenger::isAliasUsed(unsigned Reg) const {
void RegScavenger::initRegState() {
ScavengedReg = 0;
ScavengedRC = NULL;
ScavengeRestore = NULL;
// All registers started out unused.
@ -123,7 +122,6 @@ void RegScavenger::forward() {
if (MI == ScavengeRestore) {
ScavengedReg = 0;
ScavengedRC = NULL;
ScavengeRestore = NULL;
}
@ -390,7 +388,6 @@ unsigned RegScavenger::scavengeRegister(const TargetRegisterClass *RC,
// Doing this here leads to infinite regress.
// ScavengedReg = SReg;
ScavengedRC = RC;
DEBUG(dbgs() << "Scavenged register (with spill): " << TRI->getName(SReg) <<
"\n");