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| author | Marcin Koscielnicki <koriakin@0x04.net> | 2016-06-28 14:13:11 +0000 |
|---|---|---|
| committer | Marcin Koscielnicki <koriakin@0x04.net> | 2016-06-28 14:13:11 +0000 |
| commit | 234e5a809b49f93c16d0b279ce3d602c146743c5 (patch) | |
| tree | c5fb62f6b52f9b1578f202f4114ef0800c1f1f18 /llvm/lib/Target | |
| parent | baf27df0bf0161d2a6e09fe11114c1f30ca7a2f7 (diff) | |
| download | bcm5719-llvm-234e5a809b49f93c16d0b279ce3d602c146743c5.tar.gz bcm5719-llvm-234e5a809b49f93c16d0b279ce3d602c146743c5.zip | |
[SystemZ] Save/restore r6 and r7 if function contains landing pad.
This fixes PR27102.
Differential Revision: http://reviews.llvm.org/D18541
llvm-svn: 274017
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp b/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp index a1f036d68ec..ccaed49475c 100644 --- a/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp +++ b/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp @@ -81,6 +81,12 @@ void SystemZFrameLowering::determineCalleeSaves(MachineFunction &MF, for (unsigned I = MFI->getVarArgsFirstGPR(); I < SystemZ::NumArgGPRs; ++I) SavedRegs.set(SystemZ::ArgGPRs[I]); + // If there are any landing pads, entering them will modify r6/r7. + if (!MF.getMMI().getLandingPads().empty()) { + SavedRegs.set(SystemZ::R6D); + SavedRegs.set(SystemZ::R7D); + } + // If the function requires a frame pointer, record that the hard // frame pointer will be clobbered. if (HasFP) |
