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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 | 27615d7f2159ef219167cfc3e804d17105a62e78 (patch) | |
| tree | 70c3121f4ac92c60a2d5dacea65b3d88bfa2f6bd /lib | |
| parent | b8822ad224d4eb5dc1b8b770bee11a2160e79141 (diff) | |
| download | external_llvm-27615d7f2159ef219167cfc3e804d17105a62e78.zip external_llvm-27615d7f2159ef219167cfc3e804d17105a62e78.tar.gz external_llvm-27615d7f2159ef219167cfc3e804d17105a62e78.tar.bz2 | |
Don't bother calculating info unless its needed. May reduce number of stack slots created.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7584 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/RegAllocLocal.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp index 57f3c83..f6eacda 100644 --- a/lib/CodeGen/RegAllocLocal.cpp +++ b/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 |