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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-13 01:29:32 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-13 01:29:32 +0000 |
| commit | e1539cc5b642256351bf8add15fe4eecea8d5ced (patch) | |
| tree | f73b1548819027949fbd8cfbe68c4c3bd5a2f54e /llvm/lib/CodeGen | |
| parent | 43a87501b35081069e1cd9cb1d99d969e44533d4 (diff) | |
| download | bcm5719-llvm-e1539cc5b642256351bf8add15fe4eecea8d5ced.tar.gz bcm5719-llvm-e1539cc5b642256351bf8add15fe4eecea8d5ced.zip | |
Now that we are deleting unused live intervals during allocation, pointers may be reused.
Use the virtual register number as a cache tag instead. They are not reused.
llvm-svn: 127561
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/LiveIntervalUnion.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/LiveIntervalUnion.h b/llvm/lib/CodeGen/LiveIntervalUnion.h index 6f9c5f4455e..3734c7f4913 100644 --- a/llvm/lib/CodeGen/LiveIntervalUnion.h +++ b/llvm/lib/CodeGen/LiveIntervalUnion.h @@ -163,7 +163,7 @@ public: bool CheckedFirstInterference; bool SeenAllInterferences; bool SeenUnspillableVReg; - unsigned Tag; + unsigned Tag, VTag; public: Query(): LiveUnion(), VirtReg() {} @@ -181,11 +181,12 @@ public: SeenAllInterferences = false; SeenUnspillableVReg = false; Tag = 0; + VTag = 0; } void init(LiveInterval *VReg, LiveIntervalUnion *LIU) { assert(VReg && LIU && "Invalid arguments"); - if (VirtReg == VReg && LiveUnion == LIU && !LIU->changedSince(Tag)) { + if (VReg->reg == VTag && LiveUnion == LIU && !LIU->changedSince(Tag)) { // Retain cached results, e.g. firstInterference. return; } @@ -193,6 +194,7 @@ public: LiveUnion = LIU; VirtReg = VReg; Tag = LIU->getTag(); + VTag = VReg->reg; } LiveInterval &virtReg() const { |
