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| author | Andrew Trick <atrick@apple.com> | 2012-06-11 23:42:23 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2012-06-11 23:42:23 +0000 |
| commit | 0eb3a3524e9d68642e574780d19c781386ed4469 (patch) | |
| tree | d7d8bcb299ce52a078b8bf18c5adfa05235bc88d /lib/CodeGen/RegisterPressure.cpp | |
| parent | 4487479543d58df84bb403f4bcfd33f72aadfa18 (diff) | |
| download | llvm-0eb3a3524e9d68642e574780d19c781386ed4469.tar.gz llvm-0eb3a3524e9d68642e574780d19c781386ed4469.tar.bz2 llvm-0eb3a3524e9d68642e574780d19c781386ed4469.tar.xz | |
misched: When querying RegisterPressureTracker, always save current and max pressure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158340 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegisterPressure.cpp')
| -rw-r--r-- | lib/CodeGen/RegisterPressure.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/CodeGen/RegisterPressure.cpp b/lib/CodeGen/RegisterPressure.cpp index 52174d8f37..43448c850a 100644 --- a/lib/CodeGen/RegisterPressure.cpp +++ b/lib/CodeGen/RegisterPressure.cpp @@ -811,25 +811,31 @@ getMaxDownwardPressureDelta(const MachineInstr *MI, RegPressureDelta &Delta, /// Get the pressure of each PSet after traversing this instruction bottom-up. void RegPressureTracker:: getUpwardPressure(const MachineInstr *MI, - std::vector<unsigned> &PressureResult) { + std::vector<unsigned> &PressureResult, + std::vector<unsigned> &MaxPressureResult) { // Snapshot pressure. PressureResult = CurrSetPressure; + MaxPressureResult = P.MaxSetPressure; bumpUpwardPressure(MI); // Current pressure becomes the result. Restore current pressure. + P.MaxSetPressure.swap(MaxPressureResult); CurrSetPressure.swap(PressureResult); } /// Get the pressure of each PSet after traversing this instruction top-down. void RegPressureTracker:: getDownwardPressure(const MachineInstr *MI, - std::vector<unsigned> &PressureResult) { + std::vector<unsigned> &PressureResult, + std::vector<unsigned> &MaxPressureResult) { // Snapshot pressure. PressureResult = CurrSetPressure; + MaxPressureResult = P.MaxSetPressure; bumpDownwardPressure(MI); // Current pressure becomes the result. Restore current pressure. + P.MaxSetPressure.swap(MaxPressureResult); CurrSetPressure.swap(PressureResult); } |