diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2017-12-02 12:46:23 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2017-12-02 12:46:23 +0000 |
| commit | edad5bcb76bf472a1487c0f3dd94a5914213a647 (patch) | |
| tree | 63c3f98843d0debbfd390005cf8e05250cd3fe28 /lib/Target/AArch64/AArch64RedundantCopyElimination.cpp | |
| parent | 0bc1bd0d3931803dc6a26d35758f93527359bcdb (diff) | |
Vendor import of llvm release_50 branch r319231:vendor/llvm/llvm-release_50-r319231
Notes
svn path=/vendor/llvm/dist/; revision=326460
svn path=/vendor/llvm/llvm-release_50-r319231/; revision=326461; tag=vendor/llvm/llvm-release_50-r319231
Diffstat (limited to 'lib/Target/AArch64/AArch64RedundantCopyElimination.cpp')
| -rw-r--r-- | lib/Target/AArch64/AArch64RedundantCopyElimination.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Target/AArch64/AArch64RedundantCopyElimination.cpp b/lib/Target/AArch64/AArch64RedundantCopyElimination.cpp index 4e65c0ab6011..22c11c7276d2 100644 --- a/lib/Target/AArch64/AArch64RedundantCopyElimination.cpp +++ b/lib/Target/AArch64/AArch64RedundantCopyElimination.cpp @@ -167,6 +167,9 @@ AArch64RedundantCopyElimination::knownRegValInBlock( // CMP is an alias for SUBS with a dead destination register. case AArch64::SUBSWri: case AArch64::SUBSXri: { + // Sometimes the first operand is a FrameIndex. Bail if tht happens. + if (!PredI.getOperand(1).isReg()) + return None; MCPhysReg SrcReg = PredI.getOperand(1).getReg(); // Must not be a symbolic immediate. |