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| author | Andrew Trick <atrick@apple.com> | 2012-12-01 01:22:44 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2012-12-01 01:22:44 +0000 |
| commit | d5953622ce7ef8d505b1fc3969da8082377a6013 (patch) | |
| tree | 783130a525b2a4b6ad9a98d3021ebfc4c2fc697c /llvm/lib | |
| parent | a01302182cbd145e880cd2a58d0bb76b50978d62 (diff) | |
| download | bcm5719-llvm-d5953622ce7ef8d505b1fc3969da8082377a6013.tar.gz bcm5719-llvm-d5953622ce7ef8d505b1fc3969da8082377a6013.zip | |
misched: Fix the DAG builder to handle an undef operand at ExitSU.
Assertion failed: (VNI && "No value to read by operand")
rdar://12790267.
llvm-svn: 169071
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/ScheduleDAGInstrs.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp index 2b00b596d3b..fd75576c786 100644 --- a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp +++ b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp @@ -210,7 +210,8 @@ void ScheduleDAGInstrs::addSchedBarrierDeps() { Uses[Reg].push_back(PhysRegSUOper(&ExitSU, -1)); else { assert(!IsPostRA && "Virtual register encountered after regalloc."); - addVRegUseDeps(&ExitSU, i); + if (MO.readsReg()) // ignore undef operands + addVRegUseDeps(&ExitSU, i); } } } else { |
