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R600/SI: Don't crash when getting immediate operand size

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230147 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2015-02-21 21:29:04 +00:00
parent dc9d5dcdd7
commit 9036390498
1 changed files with 7 additions and 0 deletions
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7
lib/Target/R600/SIInstrInfo.h
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@ -254,6 +254,13 @@ public:
// instruction opcode.
unsigned getOpSize(uint16_t Opcode, unsigned OpNo) const {
const MCOperandInfo &OpInfo = get(Opcode).OpInfo[OpNo];
if (OpInfo.RegClass == -1) {
// If this is an immediate operand, this must be a 32-bit literal.
assert(OpInfo.OperandType == MCOI::OPERAND_IMMEDIATE);
return 4;
}
return RI.getRegClass(OpInfo.RegClass)->getSize();
}