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[PGO] Allow input value node list to be null

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This is to handle the case when vp node linked
list array is laziliy initialized at runtime 

llvm-svn: 254551
This commit is contained in:
Xinliang David Li 2015-12-02 21:47:43 +00:00
parent ae07b50dd6
commit 1377f309a0
1 changed files with 6 additions and 3 deletions
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9
include/llvm/ProfileData/InstrProfData.inc
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@ -538,12 +538,13 @@ int initializeValueProfRuntimeRecord(ValueProfRuntimeRecord *RuntimeRecord,
} }
NumValueKinds++; NumValueKinds++;
RuntimeRecord->SiteCountArray[I] = (uint8_t *)calloc(N, 1); RuntimeRecord->SiteCountArray[I] = (uint8_t *)calloc(N, 1);
RuntimeRecord->NodesKind[I] = &RuntimeRecord->Nodes[S]; if (!RuntimeRecord->SiteCountArray[I])
if (!RuntimeRecord->NodesKind[I])
return 1; return 1;
RuntimeRecord->NodesKind[I] = Nodes ? &Nodes[S] : NULL;
for (J = 0; J < N; J++) { for (J = 0; J < N; J++) {
/* Compute value count for each site. */
uint32_t C = 0; uint32_t C = 0;
ValueProfNode *Site = RuntimeRecord->Nodes[S + J]; ValueProfNode *Site = Nodes ? RuntimeRecord->NodesKind[I][J] : NULL;
while (Site) { while (Site) {
C++; C++;
Site = Site->Next; Site = Site->Next;
@ -596,6 +597,8 @@ void getValueForSiteRT(const void *R, InstrProfValueData *Dst, uint32_t VK,
unsigned I, N = 0; unsigned I, N = 0;
const ValueProfRuntimeRecord *Record = (const ValueProfRuntimeRecord *)R; const ValueProfRuntimeRecord *Record = (const ValueProfRuntimeRecord *)R;
N = getNumValueDataForSiteRT(R, VK, S); N = getNumValueDataForSiteRT(R, VK, S);
if (N == 0)
return;
ValueProfNode *VNode = Record->NodesKind[VK][S]; ValueProfNode *VNode = Record->NodesKind[VK][S];
for (I = 0; I < N; I++) { for (I = 0; I < N; I++) {
Dst[I] = VNode->VData; Dst[I] = VNode->VData;