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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-23 03:10:17 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-23 03:10:17 +0000 |
| commit | cacefc7dcaa646560e51c367ca3785a37fac69bb (patch) | |
| tree | a73c00a84b51d5d26b20af2e8d755c1971b94d3d /llvm/lib/CodeGen/InterferenceCache.h | |
| parent | 8957aaa2d27974b165d660e609f3664ca64d9404 (diff) | |
| download | llvm-cacefc7dcaa646560e51c367ca3785a37fac69bb.zip llvm-cacefc7dcaa646560e51c367ca3785a37fac69bb.tar.gz llvm-cacefc7dcaa646560e51c367ca3785a37fac69bb.tar.bz2 | |
Allow null interference cursors to be queried.
They always report 'no interference'.
llvm-svn: 135843
Diffstat (limited to 'llvm/lib/CodeGen/InterferenceCache.h')
| -rw-r--r-- | llvm/lib/CodeGen/InterferenceCache.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/InterferenceCache.h b/llvm/lib/CodeGen/InterferenceCache.h index 7f0a27a..4df0a9e5 100644 --- a/llvm/lib/CodeGen/InterferenceCache.h +++ b/llvm/lib/CodeGen/InterferenceCache.h @@ -138,6 +138,7 @@ public: class Cursor { Entry *CacheEntry; BlockInterference *Current; + static BlockInterference NoInterference; void setEntry(Entry *E) { Current = 0; @@ -175,7 +176,7 @@ public: /// moveTo - Move cursor to basic block MBBNum. void moveToBlock(unsigned MBBNum) { - Current = CacheEntry->get(MBBNum); + Current = CacheEntry ? CacheEntry->get(MBBNum) : &NoInterference; } /// hasInterference - Return true if the current block has any interference. |