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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-09-30 19:44:31 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-09-30 19:44:31 +0000 |
| commit | 2622f4622c36ec9924fb908085154ffdd7174aff (patch) | |
| tree | 3987040286b45e29e4e08ce1695d4ff86f611ab3 /lib/MC/ELFObjectWriter.cpp | |
| parent | 3787a40e038d6444a1b0e93f1cdc55fb006a5392 (diff) | |
When isel is emitting instructions for an x86 target without CMOV, the CFG is
edited during emission.
If the basic block ends in a switch that gets lowered to a jump table, any
phis at the default edge were getting updated wrong. The jump table data
structure keeps a pointer to the header blocks that wasn't getting updated
after the MBB is split.
This bug was exposed on 32-bit Linux when disabling critical edge splitting in
codegen prepare.
The fix is to uipdate stale MBB pointers whenever a block is split during
emission.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115191 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/MC/ELFObjectWriter.cpp')
0 files changed, 0 insertions, 0 deletions