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| author | Evan Cheng <evan.cheng@apple.com> | 2008-10-27 07:14:50 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-10-27 07:14:50 +0000 |
| commit | f71372297537df945c537a0a719f8a6af21d8f14 (patch) | |
| tree | b22636a95baeb92be27e2efb9c871fd3095b1529 /llvm/lib/CodeGen | |
| parent | 59b5691388c0ed931463ca0d19fa85925174103f (diff) | |
| download | bcm5719-llvm-f71372297537df945c537a0a719f8a6af21d8f14.tar.gz bcm5719-llvm-f71372297537df945c537a0a719f8a6af21d8f14.zip | |
For now, don't split live intervals around x87 stack register barriers. FpGET_ST0_80 must be right after a call instruction (and ADJCALLSTACKUP) so we need to find a way to prevent reload of x87 registers between them.
llvm-svn: 58230
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/PreAllocSplitting.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/PreAllocSplitting.cpp b/llvm/lib/CodeGen/PreAllocSplitting.cpp index 547c528ca23..33e3e8054ce 100644 --- a/llvm/lib/CodeGen/PreAllocSplitting.cpp +++ b/llvm/lib/CodeGen/PreAllocSplitting.cpp @@ -659,6 +659,8 @@ PreAllocSplitting::SplitRegLiveIntervals(const TargetRegisterClass **RCs) { // by the current barrier. SmallVector<LiveInterval*, 8> Intervals; for (const TargetRegisterClass **RC = RCs; *RC; ++RC) { + if (TII->IgnoreRegisterClassBarriers(*RC)) + continue; std::vector<unsigned> &VRs = MRI->getRegClassVirtRegs(*RC); for (unsigned i = 0, e = VRs.size(); i != e; ++i) { unsigned Reg = VRs[i]; |
