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LLVM backend for 6502
2fc0483faf
------------------------------------------------------------------------ r181540 | void | 2013-05-09 13:10:38 -0700 (Thu, 09 May 2013) | 11 lines Generate a compact unwind encoding in the face of a stack alignment push. We generate a `push' of a random register (%rax) if the stack needs to be aligned by the size of that register. However, this could mess up compact unwind generation. In particular, we want to still generate compact unwind in the presence of this monstrosity. Check if the push of of the %rax/%eax register. If it is and it's marked with the `FrameSetup' flag, then we can generate a compact unwind encoding for the function only if the push is the last FrameSetup instruction. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_33@181955 91177308-0d34-0410-b5e6-96231b3b80d8 |
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