diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMFrameLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMFrameLowering.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/llvm/lib/Target/ARM/ARMFrameLowering.cpp index 3e057e9..d1e4bce 100644 --- a/llvm/lib/Target/ARM/ARMFrameLowering.cpp +++ b/llvm/lib/Target/ARM/ARMFrameLowering.cpp @@ -2157,9 +2157,15 @@ void ARMFrameLowering::adjustForSegmentedStacks( // Do not generate a prologue for leaf functions with a stack of size zero. // For non-leaf functions we have to allow for the possibility that the - // call is to a non-split function, as in PR37807. - if (StackSize == 0 && !MFI.hasTailCall()) + // callis to a non-split function, as in PR37807. This function could also + // take the address of a non-split function. When the linker tries to adjust + // its non-existent prologue, it would fail with an error. Mark the object + // file so that such failures are not errors. See this Go language bug-report + // https://go-review.googlesource.com/c/go/+/148819/ + if (StackSize == 0 && !MFI.hasTailCall()) { + MF.getMMI().setHasNosplitStack(true); return; + } // Use R4 and R5 as scratch registers. // We save R4 and R5 before use and restore them before leaving the function. |