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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-12-06 13:06:20 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-12-06 13:06:20 +0000 |
| commit | 77ce9d3b1a4675b7df00686b7157258d3a0324b7 (patch) | |
| tree | 5d88ee42fa6d8a61d561dd59cfb160c39bcc19f7 /llvm/lib/Target/X86/X86CallFrameOptimization.cpp | |
| parent | 076dfe5c12b029e9109bf898710d0296f6188f64 (diff) | |
| download | llvm-77ce9d3b1a4675b7df00686b7157258d3a0324b7.zip llvm-77ce9d3b1a4675b7df00686b7157258d3a0324b7.tar.gz llvm-77ce9d3b1a4675b7df00686b7157258d3a0324b7.tar.bz2 | |
[X86] Always generate precise CFA adjustments.
This removes the code path that generate "synchronous" (only correct at call site) CFA.
We will probably want to re-introduce it once we are capable of emitting different
.eh_frame and .debug_frame sections.
Differential Revision: http://reviews.llvm.org/D14948
llvm-svn: 254874
Diffstat (limited to 'llvm/lib/Target/X86/X86CallFrameOptimization.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86CallFrameOptimization.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86CallFrameOptimization.cpp b/llvm/lib/Target/X86/X86CallFrameOptimization.cpp index 23990b0..fc6ee17 100644 --- a/llvm/lib/Target/X86/X86CallFrameOptimization.cpp +++ b/llvm/lib/Target/X86/X86CallFrameOptimization.cpp @@ -500,7 +500,8 @@ bool X86CallFrameOptimization::adjustCallSequence(MachineFunction &MF, // For debugging, when using SP-based CFA, we need to adjust the CFA // offset after each push. - if (!TFL->hasFP(MF) && MF.getMMI().usePreciseUnwindInfo()) + // TODO: This is needed only if we require precise CFA. + if (!TFL->hasFP(MF)) TFL->BuildCFI(MBB, std::next(Push), DL, MCCFIInstruction::createAdjustCfaOffset(nullptr, 4)); |