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R600/SI: isLegalOperand() shouldn't check constant bus for SALU instructions

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The constant bus restrictions only apply to VALU instructions.  This
enables SIFoldOperands to fold immediates into SALU instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224623 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard 2014-12-19 22:15:37 +00:00
parent 87bd2fa24b
commit 2516f059db
1 changed files with 1 additions and 1 deletions
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2
lib/Target/R600/SIInstrInfo.cpp
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@ -1405,7 +1405,7 @@ bool SIInstrInfo::isOperandLegal(const MachineInstr *MI, unsigned OpIdx,
if (!MO)
MO = &MI->getOperand(OpIdx);
if (usesConstantBus(MRI, *MO)) {
if (isVALU(InstDesc.Opcode) && usesConstantBus(MRI, *MO)) {
unsigned SGPRUsed =
MO->isReg() ? MO->getReg() : (unsigned)AMDGPU::NoRegister;
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {