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author | Evan Cheng <evan.cheng@apple.com> | 2009-06-04 20:53:36 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2009-06-04 20:53:36 +0000 |
commit | 073e7e5807991a9f614569426fdd6536728c01ca (patch) | |
tree | 2b5cae4a8598788ed567177289029a4316ec67d7 /lib | |
parent | 550aacb978a8391f605c6ec1feca7d797415d38b (diff) | |
download | external_llvm-073e7e5807991a9f614569426fdd6536728c01ca.zip external_llvm-073e7e5807991a9f614569426fdd6536728c01ca.tar.gz external_llvm-073e7e5807991a9f614569426fdd6536728c01ca.tar.bz2 |
RALinScan::attemptTrivialCoalescing() was returning a virtual register instead of the physical register it is allocated to. This resulted in virtual register(s) being added the live-in sets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72890 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/CodeGen/RegAllocLinearScan.cpp | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp index ab4068e..804fae5 100644 --- a/lib/CodeGen/RegAllocLinearScan.cpp +++ b/lib/CodeGen/RegAllocLinearScan.cpp @@ -398,7 +398,7 @@ unsigned RALinScan::attemptTrivialCoalescing(LiveInterval &cur, unsigned Reg) { } ++NumCoalesce; - return SrcReg; + return PhysReg; } return Reg; @@ -555,8 +555,11 @@ void RALinScan::linearScan() re = mri_->reg_end(); ri != re; ++ri) { MachineInstr *UseMI = &*ri; MachineBasicBlock *UseMBB = UseMI->getParent(); - if (Seen.insert(UseMBB)) + if (Seen.insert(UseMBB)) { + assert(TargetRegisterInfo::isPhysicalRegister(Reg) && + "Adding a virtual register to livein set?"); UseMBB->addLiveIn(Reg); + } } } } @@ -565,8 +568,11 @@ void RALinScan::linearScan() const LiveRange &LR = *I; if (li_->findLiveInMBBs(LR.start, LR.end, LiveInMBBs)) { for (unsigned i = 0, e = LiveInMBBs.size(); i != e; ++i) - if (LiveInMBBs[i] != EntryMBB) + if (LiveInMBBs[i] != EntryMBB) { + assert(TargetRegisterInfo::isPhysicalRegister(Reg) && + "Adding a virtual register to livein set?"); LiveInMBBs[i]->addLiveIn(Reg); + } LiveInMBBs.clear(); } } |