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Add assertions in MipsLongBranch which check the size of basic blocks.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168078 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2012-11-15 20:05:11 +00:00
parent 1c1c49372c
commit c984657c74
1 changed files with 7 additions and 1 deletions
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8
lib/Target/Mips/MipsLongBranch.cpp
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@ -258,7 +258,8 @@ void MipsLongBranch::expandToLongBranch(MBBInfo &I) {
BalTgtMBB->addSuccessor(TgtMBB);
int64_t TgtAddress = MBBInfos[TgtMBB->getNumber()].Address;
int64_t Offset = TgtAddress - (I.Address + I.Size - 20);
unsigned BalTgtMBBSize = 5;
int64_t Offset = TgtAddress - (I.Address + I.Size - BalTgtMBBSize * 4);
int64_t Lo = SignExtend64<16>(Offset & 0xffff);
int64_t Hi = SignExtend64<16>(((Offset + 0x8000) >> 16) & 0xffff);
@ -351,6 +352,9 @@ void MipsLongBranch::expandToLongBranch(MBBInfo &I) {
BuildMI(*BalTgtMBB, Pos, DL, TII->get(Mips::DADDiu), Mips::SP_64)
.addReg(Mips::SP_64).addImm(16)->setIsInsideBundle();
}
assert(BalTgtMBBSize == BalTgtMBB->size());
assert(LongBrMBB->size() + BalTgtMBBSize == LongBranchSeqSize);
} else {
// $longbr:
// j $tgt
@ -361,6 +365,8 @@ void MipsLongBranch::expandToLongBranch(MBBInfo &I) {
LongBrMBB->addSuccessor(TgtMBB);
BuildMI(*LongBrMBB, Pos, DL, TII->get(Mips::J)).addMBB(TgtMBB);
BuildMI(*LongBrMBB, Pos, DL, TII->get(Mips::NOP))->setIsInsideBundle();
assert(LongBrMBB->size() == LongBranchSeqSize);
}
if (I.Br->isUnconditionalBranch()) {