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| author | Chris Lattner <sabre@nondot.org> | 2003-08-04 23:42:37 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2003-08-04 23:42:37 +0000 |
| commit | 4b637cc6668ae3135d1692c58d64dd21b07fa36e (patch) | |
| tree | 1a236571190d25584edddbc3200e8680d1af500f /llvm/lib/CodeGen | |
| parent | 815b85e3bac04e542ba3ac4fee9d8fb4e711da66 (diff) | |
| download | bcm5719-llvm-4b637cc6668ae3135d1692c58d64dd21b07fa36e.tar.gz bcm5719-llvm-4b637cc6668ae3135d1692c58d64dd21b07fa36e.zip | |
Don't bother calculating info unless its needed. May reduce number of stack slots created.
llvm-svn: 7584
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/RegAllocLocal.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/RegAllocLocal.cpp b/llvm/lib/CodeGen/RegAllocLocal.cpp index 57f3c836e55..f6eacda9c45 100644 --- a/llvm/lib/CodeGen/RegAllocLocal.cpp +++ b/llvm/lib/CodeGen/RegAllocLocal.cpp @@ -238,10 +238,6 @@ void RA::spillVirtReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator &I, DEBUG(std::cerr << " which corresponds to no vreg, " << "must be spurious physreg: ignoring (WARNING)\n"); } else { - // FIXME: move this into the conditional?? - const TargetRegisterClass *RC = MF->getSSARegMap()->getRegClass(VirtReg); - int FrameIndex = getStackSpaceFor(VirtReg, RC); - DEBUG(std::cerr << " containing %reg" << VirtReg; if (!isVirtRegModified(VirtReg)) std::cerr << " which has not been modified, so no store necessary!"); @@ -250,6 +246,8 @@ void RA::spillVirtReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator &I, // register. We only need to spill it into its stack slot if it has been // modified. if (isVirtRegModified(VirtReg)) { + const TargetRegisterClass *RC = MF->getSSARegMap()->getRegClass(VirtReg); + int FrameIndex = getStackSpaceFor(VirtReg, RC); DEBUG(std::cerr << " to stack slot #" << FrameIndex); RegInfo->storeRegToStackSlot(MBB, I, PhysReg, FrameIndex, RC); ++NumSpilled; // Update statistics |
