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Don't try to fold V_SET0 and V_SETALLONES to loads in medium and

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large code models.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98042 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-03-09 03:01:40 +00:00
parent 94a1c631db
commit 81d0c36d22
1 changed files with 5 additions and 0 deletions
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5
lib/Target/X86/X86InstrInfo.cpp
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@ -2525,6 +2525,11 @@ MachineInstr* X86InstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
// Folding a V_SET0 or V_SETALLONES as a load, to ease register pressure. // Folding a V_SET0 or V_SETALLONES as a load, to ease register pressure.
// Create a constant-pool entry and operands to load from it. // Create a constant-pool entry and operands to load from it.
// Medium and large mode can't fold loads this way.
if (TM.getCodeModel() != CodeModel::Small &&
TM.getCodeModel() != CodeModel::Kernel)
return NULL;
// x86-32 PIC requires a PIC base register for constant pools. // x86-32 PIC requires a PIC base register for constant pools.
unsigned PICBase = 0; unsigned PICBase = 0;
if (TM.getRelocationModel() == Reloc::PIC_) { if (TM.getRelocationModel() == Reloc::PIC_) {