diff options
| author | Venkatraman Govindaraju <venkatra@cs.wisc.edu> | 2013-07-30 19:53:10 +0000 |
|---|---|---|
| committer | Venkatraman Govindaraju <venkatra@cs.wisc.edu> | 2013-07-30 19:53:10 +0000 |
| commit | 8717679c449db5555ec0ce2873bbbe53106f4c88 (patch) | |
| tree | 59d2c2a001d893ed20be4f234649862435f03356 /lib/Target/Sparc/SparcFrameLowering.cpp | |
| parent | 264e92d6db46083f9f46484ec39e99f18d35d370 (diff) | |
| download | llvm-8717679c449db5555ec0ce2873bbbe53106f4c88.tar.gz llvm-8717679c449db5555ec0ce2873bbbe53106f4c88.tar.bz2 llvm-8717679c449db5555ec0ce2873bbbe53106f4c88.tar.xz | |
[Sparc] Rewrite MBB's live-in registers for leaf functions. Also, add
register i7 as a live-in if current function's return address is taken.
This revision fixes PR16269.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187433 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Sparc/SparcFrameLowering.cpp')
| -rw-r--r-- | lib/Target/Sparc/SparcFrameLowering.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Target/Sparc/SparcFrameLowering.cpp b/lib/Target/Sparc/SparcFrameLowering.cpp index 7e91bc38d4..536e466ca3 100644 --- a/lib/Target/Sparc/SparcFrameLowering.cpp +++ b/lib/Target/Sparc/SparcFrameLowering.cpp @@ -188,6 +188,17 @@ void SparcFrameLowering::remapRegsForLeafProc(MachineFunction &MF) const { MRI.setPhysRegUnused(reg); } + // Rewrite MBB's Live-ins. + for (MachineFunction::iterator MBB = MF.begin(), E = MF.end(); + MBB != E; ++MBB) { + for (unsigned reg = SP::I0; reg <= SP::I7; ++reg) { + if (!MBB->isLiveIn(reg)) + continue; + MBB->removeLiveIn(reg); + MBB->addLiveIn(reg - SP::I0 + SP::O0); + } + } + assert(verifyLeafProcRegUse(&MRI)); #ifdef XDEBUG MF.verify(0, "After LeafProc Remapping"); |