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| author | Juergen Ributzka <juergen@apple.com> | 2014-09-18 07:04:49 +0000 |
|---|---|---|
| committer | Juergen Ributzka <juergen@apple.com> | 2014-09-18 07:04:49 +0000 |
| commit | 2fc851002b34f6b30e947f82611f4331cd38c93d (patch) | |
| tree | 14da79825954b0926d0150651bda69b008aa35f1 /llvm/lib/Target/AArch64/AArch64FastISel.cpp | |
| parent | a33070c3218a91925e98b62b976830c1c4bafc53 (diff) | |
| download | bcm5719-llvm-2fc851002b34f6b30e947f82611f4331cd38c93d.tar.gz bcm5719-llvm-2fc851002b34f6b30e947f82611f4331cd38c93d.zip | |
[FastISel][AArch64] Followup commit for 218031 to handle negative offsets too.
llvm-svn: 218032
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(), |
