diff options
| author | Jim Grosbach <grosbach@apple.com> | 2010-10-18 16:48:59 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2010-10-18 16:48:59 +0000 |
| commit | 0f0127f4a686ed55e5b8344d576999259f8c2297 (patch) | |
| tree | 2b108cdda9ea8c7b5e49cca7d61dd77f1d854c14 | |
| parent | e038a206df7df6f799be8e3a308101b77a3414ce (diff) | |
ARM addrmode4 instructions (ldm, stm and friends) can't encode an immediate
offset for stack references. Make sure we take that into account when
deciding whether to reserver an emergency spill slot for the register
scavenger. rdar://8559625
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116714 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/ARM/ARMBaseRegisterInfo.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/lib/Target/ARM/ARMBaseRegisterInfo.cpp index 51e62a02b3..acb61b218a 100644 --- a/lib/Target/ARM/ARMBaseRegisterInfo.cpp +++ b/lib/Target/ARM/ARMBaseRegisterInfo.cpp @@ -661,8 +661,9 @@ ARMBaseRegisterInfo::estimateRSStackSizeLimit(MachineFunction &MF) const { if (hasFP(MF) && AFI->hasStackFrame()) Limit = std::min(Limit, (1U << 8) - 1); break; + case ARMII::AddrMode4: case ARMII::AddrMode6: - // Addressing mode 6 (load/store) instructions can't encode an + // Addressing modes 4 & 6 (load/store) instructions can't encode an // immediate offset for stack references. return 0; default: |