blob: 23639e71232d7c5d1c27b327d1fde5494f7aa4ec (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
//===- LibCallSemantics.cpp - Describe library semantics ------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements interfaces that can be used to describe language
// specific runtime library interfaces (e.g. libc, libm, etc) to LLVM
// optimizers.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/LibCallSemantics.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/IR/Function.h"
using namespace llvm;
/// This impl pointer in ~LibCallInfo is actually a StringMap. This
/// helper does the cast.
static StringMap<const LibCallFunctionInfo*> *getMap(void *Ptr) {
return static_cast<StringMap<const LibCallFunctionInfo*> *>(Ptr);
}
LibCallInfo::~LibCallInfo() {
delete getMap(Impl);
}
const LibCallLocationInfo &LibCallInfo::getLocationInfo(unsigned LocID) const {
// Get location info on the first call.
if (NumLocations == 0)
NumLocations = getLocationInfo(Locations);
assert(LocID < NumLocations && "Invalid location ID!");
return Locations[LocID];
}
/// Return the LibCallFunctionInfo object corresponding to
/// the specified function if we have it. If not, return null.
const LibCallFunctionInfo *
LibCallInfo::getFunctionInfo(const Function *F) const {
StringMap<const LibCallFunctionInfo*> *Map = getMap(Impl);
/// If this is the first time we are querying for this info, lazily construct
/// the StringMap to index it.
if (!Map) {
Impl = Map = new StringMap<const LibCallFunctionInfo*>();
const LibCallFunctionInfo *Array = getFunctionInfoArray();
if (!Array) return nullptr;
// We now have the array of entries. Populate the StringMap.
for (unsigned i = 0; Array[i].Name; ++i)
(*Map)[Array[i].Name] = Array+i;
}
// Look up this function in the string map.
return Map->lookup(F->getName());
}
|
