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[DAGCombine][NFC] Use ArrayRef and correctly size SmallVectors.

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In preparation for D70487.
This commit is contained in:
Clement Courbet 2019-11-21 08:47:10 +01:00
parent abfa68cadb
commit ba35e653b7
1 changed files with 3 additions and 3 deletions
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6
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -6514,7 +6514,7 @@ static unsigned BigEndianByteAt(unsigned BW, unsigned i) {
// Check if the bytes offsets we are looking at match with either big or
// little endian value loaded. Return true for big endian, false for little
// endian, and None if match failed.
static Optional<bool> isBigEndian(const SmallVector<int64_t, 4> &ByteOffsets,
static Optional<bool> isBigEndian(const ArrayRef<int64_t> ByteOffsets,
int64_t FirstOffset) {
// The endian can be decided only when it is 2 bytes at least.
unsigned Width = ByteOffsets.size();
@ -6594,7 +6594,7 @@ SDValue DAGCombiner::MatchStoreCombine(StoreSDNode *N) {
// to the same base address. Collect bytes offsets from Base address into
// ByteOffsets.
SDValue CombinedValue;
SmallVector<int64_t, 4> ByteOffsets(Width, INT64_MAX);
SmallVector<int64_t, 8> ByteOffsets(Width, INT64_MAX);
int64_t FirstOffset = INT64_MAX;
StoreSDNode *FirstStore = nullptr;
Optional<BaseIndexOffset> Base;
@ -6777,7 +6777,7 @@ SDValue DAGCombiner::MatchLoadCombine(SDNode *N) {
// Check if all the bytes of the OR we are looking at are loaded from the same
// base address. Collect bytes offsets from Base address in ByteOffsets.
SmallVector<int64_t, 4> ByteOffsets(ByteWidth);
SmallVector<int64_t, 8> ByteOffsets(ByteWidth);
for (unsigned i = 0; i < ByteWidth; i++) {
auto P = calculateByteProvider(SDValue(N, 0), i, 0, /*Root=*/true);
if (!P || !P->isMemory()) // All the bytes must be loaded from memory