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| author | Saleem Abdulrasool <compnerd@compnerd.org> | 2014-05-01 04:19:56 +0000 |
|---|---|---|
| committer | Saleem Abdulrasool <compnerd@compnerd.org> | 2014-05-01 04:19:56 +0000 |
| commit | fd2fb489242bd1df75d3aa33e2ca38c6c62152d9 (patch) | |
| tree | 9ec615cdf4ed896483dec93b84ea958221b7fcce | |
| parent | 953f25078959d2517c88bf903a8270dc11f1403f (diff) | |
| download | llvm-fd2fb489242bd1df75d3aa33e2ca38c6c62152d9.tar.gz llvm-fd2fb489242bd1df75d3aa33e2ca38c6c62152d9.tar.bz2 llvm-fd2fb489242bd1df75d3aa33e2ca38c6c62152d9.tar.xz | |
ARM: support expanding external symbols in 32-bit moves
This enhances the expansion of the mov32imm pseudo-instruction to support an
external symbol reference. This is motivated by a simplification of the stack
probe emission for Windows on ARM (and fixing a leak).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207736 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/ARM/ARMExpandPseudoInsts.cpp | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/lib/Target/ARM/ARMExpandPseudoInsts.cpp index 72a9b648dc..93357fe525 100644 --- a/lib/Target/ARM/ARMExpandPseudoInsts.cpp +++ b/lib/Target/ARM/ARMExpandPseudoInsts.cpp @@ -705,17 +705,29 @@ void ARMExpandPseudo::ExpandMOV32BitImm(MachineBasicBlock &MBB, .addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead)) .addReg(DstReg); - if (MO.isImm()) { + switch (MO.getType()) { + case MachineOperand::MO_Immediate: { unsigned Imm = MO.getImm(); unsigned Lo16 = Imm & 0xffff; unsigned Hi16 = (Imm >> 16) & 0xffff; LO16 = LO16.addImm(Lo16); HI16 = HI16.addImm(Hi16); - } else { + break; + } + case MachineOperand::MO_ExternalSymbol: { + const char *ES = MO.getSymbolName(); + unsigned TF = MO.getTargetFlags(); + LO16 = LO16.addExternalSymbol(ES, TF | ARMII::MO_LO16); + HI16 = HI16.addExternalSymbol(ES, TF | ARMII::MO_HI16); + break; + } + default: { const GlobalValue *GV = MO.getGlobal(); unsigned TF = MO.getTargetFlags(); LO16 = LO16.addGlobalAddress(GV, MO.getOffset(), TF | ARMII::MO_LO16); HI16 = HI16.addGlobalAddress(GV, MO.getOffset(), TF | ARMII::MO_HI16); + break; + } } LO16->setMemRefs(MI.memoperands_begin(), MI.memoperands_end()); |