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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-05-12 00:33:28 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-05-12 00:33:28 +0000 |
| commit | 2b3fa322b8788e62e28bc6989a53737bf9483437 (patch) | |
| tree | a5d04628d96861552ac46b5a8ac7b4fdd3e37a7d /lib/CodeGen/RegAllocBase.cpp | |
| parent | 27ba61df9f9decc70124b7559f777ad596dfda29 (diff) | |
| download | llvm-2b3fa322b8788e62e28bc6989a53737bf9483437.tar.gz llvm-2b3fa322b8788e62e28bc6989a53737bf9483437.tar.bz2 llvm-2b3fa322b8788e62e28bc6989a53737bf9483437.tar.xz | |
Don't look for empty live ranges in the unions.
Empty live ranges represent undef and still get allocated, but they
won't appear in LiveIntervalUnions.
Patch by Patrik Hägglund!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156685 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocBase.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocBase.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/RegAllocBase.cpp b/lib/CodeGen/RegAllocBase.cpp index b00eceb17f..b8d1d185e9 100644 --- a/lib/CodeGen/RegAllocBase.cpp +++ b/lib/CodeGen/RegAllocBase.cpp @@ -69,11 +69,14 @@ void RegAllocBase::verify() { for (LiveIntervals::iterator liItr = LIS->begin(), liEnd = LIS->end(); liItr != liEnd; ++liItr) { unsigned reg = liItr->first; + LiveInterval* li = liItr->second; if (TargetRegisterInfo::isPhysicalRegister(reg)) continue; if (!VRM->hasPhys(reg)) continue; // spilled? + if (li->empty()) continue; // unionVRegs will only be filled if li is + // non-empty unsigned PhysReg = VRM->getPhys(reg); if (!unionVRegs[PhysReg].test(reg)) { - dbgs() << "LiveVirtReg " << reg << " not in union " << + dbgs() << "LiveVirtReg " << PrintReg(reg, TRI) << " not in union " << TRI->getName(PhysReg) << "\n"; llvm_unreachable("unallocated live vreg"); } |