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| author | Evan Cheng <evan.cheng@apple.com> | 2009-04-29 07:16:34 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-04-29 07:16:34 +0000 |
| commit | 96f3fd9a7fa709bc1ae738f6f6f82b73d4a93628 (patch) | |
| tree | 9c0fd799e1c95da65d58616145f81aad86de09d0 /lib/CodeGen/RegAllocLinearScan.cpp | |
| parent | 3a33f4903a31d35db13fb2846c5fcd0feb623888 (diff) | |
| download | external_llvm-96f3fd9a7fa709bc1ae738f6f6f82b73d4a93628.zip external_llvm-96f3fd9a7fa709bc1ae738f6f6f82b73d4a93628.tar.gz external_llvm-96f3fd9a7fa709bc1ae738f6f6f82b73d4a93628.tar.bz2 | |
spillPhysRegAroundRegDefsUses() may have invalidated iterators stored in fixed_ IntervalPtrs. Reset them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70378 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocLinearScan.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocLinearScan.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp index 2ed902c..17aec81 100644 --- a/lib/CodeGen/RegAllocLinearScan.cpp +++ b/lib/CodeGen/RegAllocLinearScan.cpp @@ -978,6 +978,15 @@ void RALinScan::assignRegOrStackSlotAtInterval(LiveInterval* cur) li_->getApproximateInstructionCount(*cur) == 0) { // Spill a physical register around defs and uses. if (li_->spillPhysRegAroundRegDefsUses(*cur, minReg, *vrm_)) { + // spillPhysRegAroundRegDefsUses may have invalidated iterator stored + // in fixed_. Reset them. + for (unsigned i = 0, e = fixed_.size(); i != e; ++i) { + IntervalPtr &IP = fixed_[i]; + LiveInterval *I = IP.first; + if (I->reg == minReg || tri_->isSubRegister(minReg, I->reg)) + IP.second = I->advanceTo(I->begin(), StartPosition); + } + DowngradedRegs.clear(); assignRegOrStackSlotAtInterval(cur); } else { |