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| author | Diana Picus <diana.picus@linaro.org> | 2017-04-19 07:29:46 +0000 |
|---|---|---|
| committer | Diana Picus <diana.picus@linaro.org> | 2017-04-19 07:29:46 +0000 |
| commit | 49472ff1cfe8ee9dc4832e740d3565ccf8c7af9f (patch) | |
| tree | 38c29ee15b9b9b2141307306a611c2208f00607d /llvm/lib/Target/ARM | |
| parent | 0f36e68f624f8ebe5fd6297bfd5b19819bf7ab21 (diff) | |
| download | bcm5719-llvm-49472ff1cfe8ee9dc4832e740d3565ccf8c7af9f.tar.gz bcm5719-llvm-49472ff1cfe8ee9dc4832e740d3565ccf8c7af9f.zip | |
[ARM] GlobalISel: Add support for G_MUL
Support G_MUL, very similar to G_ADD and G_SUB. The only difference is
in the instruction selector, where we have to select either MUL or MULv5
depending on the target.
llvm-svn: 300665
Diffstat (limited to 'llvm/lib/Target/ARM')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMInstructionSelector.cpp | 10 | ||||
| -rw-r--r-- | llvm/lib/Target/ARM/ARMLegalizerInfo.cpp | 2 | ||||
| -rw-r--r-- | llvm/lib/Target/ARM/ARMRegisterBankInfo.cpp | 1 |
3 files changed, 12 insertions, 1 deletions
diff --git a/llvm/lib/Target/ARM/ARMInstructionSelector.cpp b/llvm/lib/Target/ARM/ARMInstructionSelector.cpp index 9cd293755f2..816596b8572 100644 --- a/llvm/lib/Target/ARM/ARMInstructionSelector.cpp +++ b/llvm/lib/Target/ARM/ARMInstructionSelector.cpp @@ -303,6 +303,16 @@ bool ARMInstructionSelector::select(MachineInstr &I) const { I.setDesc(TII.get(ARM::SUBrr)); MIB.add(predOps(ARMCC::AL)).add(condCodeOp()); break; + case G_MUL: + if (TII.getSubtarget().hasV6Ops()) { + I.setDesc(TII.get(ARM::MUL)); + } else { + assert(TII.getSubtarget().useMulOps() && "Unsupported target"); + I.setDesc(TII.get(ARM::MULv5)); + MIB->getOperand(0).setIsEarlyClobber(true); + } + MIB.add(predOps(ARMCC::AL)).add(condCodeOp()); + break; case G_FADD: if (!selectFAdd(MIB, TII, MRI)) return false; diff --git a/llvm/lib/Target/ARM/ARMLegalizerInfo.cpp b/llvm/lib/Target/ARM/ARMLegalizerInfo.cpp index 4c568c023a3..fe9681439e6 100644 --- a/llvm/lib/Target/ARM/ARMLegalizerInfo.cpp +++ b/llvm/lib/Target/ARM/ARMLegalizerInfo.cpp @@ -43,7 +43,7 @@ ARMLegalizerInfo::ARMLegalizerInfo(const ARMSubtarget &ST) { setAction({Op, 1, p0}, Legal); } - for (unsigned Op : {G_ADD, G_SUB}) + for (unsigned Op : {G_ADD, G_SUB, G_MUL}) for (auto Ty : {s1, s8, s16, s32}) setAction({Op, Ty}, Legal); diff --git a/llvm/lib/Target/ARM/ARMRegisterBankInfo.cpp b/llvm/lib/Target/ARM/ARMRegisterBankInfo.cpp index dc0866f81df..e47bd3a8963 100644 --- a/llvm/lib/Target/ARM/ARMRegisterBankInfo.cpp +++ b/llvm/lib/Target/ARM/ARMRegisterBankInfo.cpp @@ -220,6 +220,7 @@ ARMRegisterBankInfo::getInstrMapping(const MachineInstr &MI) const { switch (Opc) { case G_ADD: case G_SUB: + case G_MUL: case G_SEXT: case G_ZEXT: case G_GEP: |
