diff options
| author | Andrew Trick <atrick@apple.com> | 2014-01-07 07:31:10 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2014-01-07 07:31:10 +0000 |
| commit | 9c15f4c9c98d884ff5427df69f9859a95b75c2fb (patch) | |
| tree | 0ab46ac28a7eecc2b48c939ded7d50cbcf2aabeb /lib/CodeGen/InlineSpiller.cpp | |
| parent | b4e0c9b85d7a6c5adc05059c85e4cc52dd2d92b2 (diff) | |
| download | llvm-9c15f4c9c98d884ff5427df69f9859a95b75c2fb.tar.gz llvm-9c15f4c9c98d884ff5427df69f9859a95b75c2fb.tar.bz2 llvm-9c15f4c9c98d884ff5427df69f9859a95b75c2fb.tar.xz | |
Fix for PR18396: Assertion: MO->isDead "Cannot fold physreg def".
InlineSpiller::foldMemoryOperand needs to handle undef call operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198679 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/InlineSpiller.cpp')
| -rw-r--r-- | lib/CodeGen/InlineSpiller.cpp | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp index bb0e642313..70d97c0f55 100644 --- a/lib/CodeGen/InlineSpiller.cpp +++ b/lib/CodeGen/InlineSpiller.cpp @@ -1098,12 +1098,11 @@ foldMemoryOperand(ArrayRef<std::pair<MachineInstr*, unsigned> > Ops, MRI.isReserved(Reg)) { continue; } + // Skip non-Defs, including undef uses and internal reads. + if (MO->isUse()) + continue; MIBundleOperands::PhysRegInfo RI = MIBundleOperands(FoldMI).analyzePhysReg(Reg, &TRI); - if (MO->readsReg()) { - assert(RI.Reads && "Cannot fold physreg reader"); - continue; - } if (RI.Defines) continue; // FoldMI does not define this physreg. Remove the LI segment. |