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| author | Jim Grosbach <grosbach@apple.com> | 2010-08-31 18:52:31 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2010-08-31 18:52:31 +0000 |
| commit | 9ce9210e475903b117b72089565eb38b3dfcc80c (patch) | |
| tree | 603d2b85b240fe9a19e2378fd35f41c3e047c145 /llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp | |
| parent | 8559932d36eff4a83c154ea52964c462112a56e7 (diff) | |
| download | bcm5719-llvm-9ce9210e475903b117b72089565eb38b3dfcc80c.tar.gz bcm5719-llvm-9ce9210e475903b117b72089565eb38b3dfcc80c.zip | |
SP relative offsets need to be adjusted by the local allocation size when
determining if they're likely to be in range of the SP when resolving
frame references.
llvm-svn: 112624
Diffstat (limited to 'llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp b/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp index e692988fd52..07c890de5cc 100644 --- a/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp +++ b/llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp @@ -1480,7 +1480,11 @@ needsFrameBaseReg(MachineInstr *MI, int64_t Offset) const { if (!AFI->isThumbFunction() || !AFI->isThumb1OnlyFunction()) FPOffset -= 80; // Estimate an offset from the stack pointer. + // The incoming offset is relating to the SP at the start of the function, + // but when we access the local it'll be relative to the SP after local + // allocation, so adjust our SP-relative offset by that allocation size. Offset = -Offset; + Offset += MFI->getLocalFrameSize(); // Assume that we'll have at least some spill slots allocated. // FIXME: This is a total SWAG number. We should run some statistics // and pick a real one. |
