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Copy and paste bug.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33658 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-01-30 08:22:33 +00:00
parent b267ca17d1
commit ad1b9a503c
1 changed files with 11 additions and 1 deletions
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12
lib/Target/ARM/ARMInstrInfo.cpp
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@ -444,6 +444,8 @@ unsigned ARM::GetInstSize(MachineInstr *MI) {
// If this machine instr is an inline asm, measure it.
if (MI->getOpcode() == ARM::INLINEASM)
return TAI->getInlineAsmLength(MI->getOperand(0).getSymbolName());
if (MI->getOpcode() == ARM::LABEL)
return 0;
assert(0 && "Unknown or unset size field for instr!");
break;
case ARMII::Size8Bytes: return 8; // Arm instruction x 2.
@ -457,13 +459,21 @@ unsigned ARM::GetInstSize(MachineInstr *MI) {
return MI->getOperand(2).getImm();
case ARM::BR_JTr:
case ARM::BR_JTm:
case ARM::BR_JTadd: {
case ARM::BR_JTadd:
case ARM::tBR_JTr: {
// These are jumptable branches, i.e. a branch followed by an inlined
// jumptable. The size is 4 + 4 * number of entries.
unsigned JTI = MI->getOperand(MI->getNumOperands()-2).getJumpTableIndex();
MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
assert(JTI < JT.size());
// Thumb instructions are 2 byte aligned, but JT entries are 4 byte
// 4 aligned. The assembler / linker may add 2 byte padding just before
// the JT entries. Use + 4 even for tBR_JTr to purposely over-estimate
// the size the jumptable.
// FIXME: If we know the size of the function is less than (1 << 16) *2
// bytes, we can use 16-bit entries instead. Then there won't be an
// alignment issue.
return getNumJTEntries(JT, JTI) * 4 + 4;
}
default: