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Teach CodeGen's version of computeMaskedBits to understand the range metadata.

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This is the CodeGen equivalent of r153747. I tested that there is not noticeable
performance difference with any combination of -O0/-O2 /-g when compiling
gcc as a single compilation unit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153817 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2012-03-31 18:14:00 +00:00
parent 5b00ceaeea
commit 95d594cac3
11 changed files with 54 additions and 19 deletions
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5
lib/CodeGen/MachineInstr.cpp
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@@ -381,10 +381,11 @@ MachinePointerInfo MachinePointerInfo::getStack(int64_t Offset) {
MachineMemOperand::MachineMemOperand(MachinePointerInfo ptrinfo, unsigned f,
uint64_t s, unsigned int a,
const MDNode *TBAAInfo)
const MDNode *TBAAInfo,
const MDNode *Ranges)
: PtrInfo(ptrinfo), Size(s),
Flags((f & ((1 << MOMaxBits) - 1)) | ((Log2_32(a) + 1) << MOMaxBits)),
TBAAInfo(TBAAInfo) {
TBAAInfo(TBAAInfo), Ranges(Ranges) {
assert((PtrInfo.V == 0 || isa<PointerType>(PtrInfo.V->getType())) &&
"invalid pointer value");
assert(getBaseAlignment() == a && "Alignment is not a power of 2!");