diff options
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64FastISel.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64FastISel.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64FastISel.cpp b/llvm/lib/Target/AArch64/AArch64FastISel.cpp index ff56209d2ff..cb0fa958a5a 100644 --- a/llvm/lib/Target/AArch64/AArch64FastISel.cpp +++ b/llvm/lib/Target/AArch64/AArch64FastISel.cpp @@ -917,11 +917,15 @@ bool AArch64FastISel::simplifyAddress(Address &Addr, MVT VT) { // Since the offset is too large for the load/store instruction get the // reg+offset into a register. if (ImmediateOffsetNeedsLowering) { - unsigned ResultReg = 0; + unsigned ResultReg; if (Addr.getReg()) { // Try to fold the immediate into the add instruction. - ResultReg = emitAddSub_ri(/*UseAdd=*/true, MVT::i64, Addr.getReg(), - /*IsKill=*/false, Offset); + if (Offset < 0) + ResultReg = emitAddSub_ri(/*UseAdd=*/false, MVT::i64, Addr.getReg(), + /*IsKill=*/false, -Offset); + else + ResultReg = emitAddSub_ri(/*UseAdd=*/true, MVT::i64, Addr.getReg(), + /*IsKill=*/false, Offset); if (!ResultReg) { unsigned ImmReg = fastEmit_i(MVT::i64, MVT::i64, ISD::Constant, Offset); ResultReg = emitAddSub_rr(/*UseAdd=*/true, MVT::i64, Addr.getReg(), |
