LLVM: lib/MCA/Support.cpp Source File (original) (raw)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
17#include
18
19namespace llvm {
20namespace mca {
21
22#define DEBUG_TYPE "llvm-mca"
23
25 if (Denominator == RHS.Denominator)
26 Numerator += RHS.Numerator;
27 else {
28
29
30 unsigned GCD = std::gcd(Denominator, RHS.Denominator);
31 unsigned LCM = (Denominator * RHS.Denominator) / GCD;
32 unsigned LHSNumerator = Numerator * (LCM / Denominator);
33 unsigned RHSNumerator = RHS.Numerator * (LCM / RHS.Denominator);
34 Numerator = LHSNumerator + RHSNumerator;
35 Denominator = LCM;
36 }
37 return *this;
38}
39
42 unsigned ProcResourceID = 0;
43
45 "Invalid number of elements");
46
47 Masks[0] = 0;
48
49
52 if (Desc.SubUnitsIdxBegin)
53 continue;
54 Masks[I] = 1ULL << ProcResourceID;
55 ProcResourceID++;
56 }
57
58
61 if (.SubUnitsIdxBegin)
62 continue;
63 Masks[I] = 1ULL << ProcResourceID;
64 for (unsigned U = 0; U < Desc.NumUnits; ++U) {
65 uint64_t OtherMask = Masks[Desc.SubUnitsIdxBegin[U]];
66 Masks[I] |= OtherMask;
67 }
68 ProcResourceID++;
69 }
70
71#ifndef NDEBUG
73 << "\n");
78 << Desc.Name << '\n');
79 }
80#endif
81}
82
84 unsigned NumMicroOps,
86
87
88
89 double Max = static_cast<double>(NumMicroOps) / DispatchWidth;
90
91
92
93
97 continue;
98
101 Max = std::max(Max, Throughput);
102 }
103
104
105
106
107 return Max;
108}
109
110}
111}
assert(UImm &&(UImm !=~static_cast< T >(0)) &&"Invalid immediate!")
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
size_t size() const
size - Get the array size.
MutableArrayRef - Represent a mutable reference to an array (0 or more elements consecutively in memo...
This class represents the number of cycles per resource (fractions of cycles).
LLVM_ABI ReleaseAtCycles & operator+=(const ReleaseAtCycles &RHS)
Definition Support.cpp:24
Helper functions used by various pipeline components.
LLVM_ABI double computeBlockRThroughput(const MCSchedModel &SM, unsigned DispatchWidth, unsigned NumMicroOps, ArrayRef< unsigned > ProcResourceUsage)
Compute the reciprocal block throughput from a set of processor resource cycles.
Definition Support.cpp:83
LLVM_ABI void computeProcResourceMasks(const MCSchedModel &SM, MutableArrayRef< uint64_t > Masks)
Populates vector Masks with processor resource masks.
Definition Support.cpp:40
This is an optimization pass for GlobalISel generic memory operations.
FormattedNumber format_decimal(int64_t N, unsigned Width)
format_decimal - Output N as a right justified, fixed-width decimal.
LLVM_ABI raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
FormattedNumber format_hex(uint64_t N, unsigned Width, bool Upper=false)
format_hex - Output N as a fixed width hexadecimal.
Define a kind of processor resource that will be modeled by the scheduler.
Machine model for scheduling, bundling, and heuristics.
unsigned getNumProcResourceKinds() const
const MCProcResourceDesc * getProcResource(unsigned ProcResourceIdx) const