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| author | David Green <david.green@arm.com> | 2019-06-08 10:09:02 +0000 |
|---|---|---|
| committer | David Green <david.green@arm.com> | 2019-06-08 10:09:02 +0000 |
| commit | 4ecce205d52c8979279b4ebf5a8e7ee4d3c8c18a (patch) | |
| tree | ee0a04b7fcf2d0dc9a847fdaadaf3f260bee30b8 /llvm/lib/Target/ARM/ARMISelLowering.cpp | |
| parent | 990eb2d1e83ed1f046c2435fd20b5996a95ce885 (diff) | |
| download | bcm5719-llvm-4ecce205d52c8979279b4ebf5a8e7ee4d3c8c18a.tar.gz bcm5719-llvm-4ecce205d52c8979279b4ebf5a8e7ee4d3c8c18a.zip | |
[ARM] Add fp16 addressing to isLegalT2AddressImmediate
The fp16 version of VLDR takes a imm8 multiplied by 2. This updates the costs
to account for those, and adds extra testing. It is dependant upon hasFPRegs16
as this is what the load/store instructions require.
Differential Revision: https://reviews.llvm.org/D62966
llvm-svn: 362872
Diffstat (limited to 'llvm/lib/Target/ARM/ARMISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMISelLowering.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp index ad84f036f24..c31056186de 100644 --- a/llvm/lib/Target/ARM/ARMISelLowering.cpp +++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp @@ -13300,6 +13300,9 @@ static bool isLegalT2AddressImmediate(int64_t V, EVT VT, unsigned NumBytes = std::max(VT.getSizeInBits() / 8, 1U); + // half VLDR: 2 * imm8 + if (VT.isFloatingPoint() && NumBytes == 2 && Subtarget->hasFPRegs16()) + return isShiftedUInt<8, 1>(V); // VLDR and LDRD: 4 * imm8 if ((VT.isFloatingPoint() && Subtarget->hasVFP2Base()) || NumBytes == 8) return isShiftedUInt<8, 2>(V); |
