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| author | Andrew Trick <atrick@apple.com> | 2013-06-21 18:33:23 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2013-06-21 18:33:23 +0000 |
| commit | c6bae79adb6a58be629804d058abb5613e561b5a (patch) | |
| tree | 9b79e59e6b1647a7b76c050447bbfab1281c7365 /lib | |
| parent | 03dca5e4b6c41e1e7fa4edad3d7ff8d5f6de7008 (diff) | |
| download | llvm-c6bae79adb6a58be629804d058abb5613e561b5a.tar.gz llvm-c6bae79adb6a58be629804d058abb5613e561b5a.tar.bz2 llvm-c6bae79adb6a58be629804d058abb5613e561b5a.tar.xz | |
Added -precompute-phys-liveness for testing LiveIntervals updates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184573 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 18eac4c7f9..368094396b 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -52,6 +52,14 @@ INITIALIZE_PASS_DEPENDENCY(SlotIndexes) INITIALIZE_PASS_END(LiveIntervals, "liveintervals", "Live Interval Analysis", false, false) +#ifndef NDEBUG +static cl::opt<bool> EnablePrecomputePhysRegs( + "precompute-phys-liveness", cl::Hidden, + cl::desc("Eagerly compute live intervals for all physreg units.")); +#else +static bool EnablePrecomputePhysRegs = false; +#endif // NDEBUG + void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesCFG(); AU.addRequired<AliasAnalysis>(); @@ -116,6 +124,12 @@ bool LiveIntervals::runOnMachineFunction(MachineFunction &fn) { computeRegMasks(); computeLiveInRegUnits(); + if (EnablePrecomputePhysRegs) { + // For stress testing, precompute live ranges of all physical register + // units, including reserved registers. + for (unsigned i = 0, e = TRI->getNumRegUnits(); i != e; ++i) + getRegUnit(i); + } DEBUG(dump()); return true; } |