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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-16 02:15:33 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-16 02:15:33 +0000 |
| commit | 2131eb48875c7059eb04f0a324321e1e15e6597e (patch) | |
| tree | 423554c263ba3996737533727fa2688d891dace1 /include/llvm/CodeGen | |
| parent | 644b3840b975cdd7465d16700740dd1dd7034df0 (diff) | |
| download | llvm-2131eb48875c7059eb04f0a324321e1e15e6597e.tar.gz llvm-2131eb48875c7059eb04f0a324321e1e15e6597e.tar.bz2 llvm-2131eb48875c7059eb04f0a324321e1e15e6597e.tar.xz | |
Fix problem when using LiveRangeQuery with block entries.
A value that is live in to a basic block should be returned by valueIn()
in LiveRangeQuery(getMBBStartIdx(MBB)), unless it is a PHI-def which
should be returned by valueDefined() instead.
Current code isn't using this functionality. Future code will.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163990 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen')
| -rw-r--r-- | include/llvm/CodeGen/LiveInterval.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/LiveInterval.h b/include/llvm/CodeGen/LiveInterval.h index 3bce496b2b..b4d0b12523 100644 --- a/include/llvm/CodeGen/LiveInterval.h +++ b/include/llvm/CodeGen/LiveInterval.h @@ -499,7 +499,9 @@ namespace llvm { if (I == E) return; // Is this an instruction live-in segment? - if (SlotIndex::isEarlierInstr(I->start, Idx)) { + // If Idx is the start index of a basic block, include live-in segments + // that start at Idx.getBaseIndex(). + if (I->start <= Idx.getBaseIndex()) { EarlyVal = I->valno; EndPoint = I->end; // Move to the potentially live-out segment. |