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comparison lib/Target/PowerPC/PPCTargetTransformInfo.cpp @ 100:7d135dc70f03

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents afa8332a0e37
children 1172e4bd9c6f
comparison
equal deleted inserted replaced
96:6418606d0ead 100:7d135dc70f03
18 18
19 #define DEBUG_TYPE "ppctti" 19 #define DEBUG_TYPE "ppctti"
20 20
21 static cl::opt<bool> DisablePPCConstHoist("disable-ppc-constant-hoisting", 21 static cl::opt<bool> DisablePPCConstHoist("disable-ppc-constant-hoisting",
22 cl::desc("disable constant hoisting on PPC"), cl::init(false), cl::Hidden); 22 cl::desc("disable constant hoisting on PPC"), cl::init(false), cl::Hidden);
23
24 // This is currently only used for the data prefetch pass which is only enabled
25 // for BG/Q by default.
26 static cl::opt<unsigned>
27 CacheLineSize("ppc-loop-prefetch-cache-line", cl::Hidden, cl::init(64),
28 cl::desc("The loop prefetch cache line size"));
23 29
24 //===----------------------------------------------------------------------===// 30 //===----------------------------------------------------------------------===//
25 // 31 //
26 // PPC cost model. 32 // PPC cost model.
27 // 33 //
228 return 64; 234 return 64;
229 return 32; 235 return 32;
230 236
231 } 237 }
232 238
239 unsigned PPCTTIImpl::getCacheLineSize() {
240 // This is currently only used for the data prefetch pass which is only
241 // enabled for BG/Q by default.
242 return CacheLineSize;
243 }
244
233 unsigned PPCTTIImpl::getMaxInterleaveFactor(unsigned VF) { 245 unsigned PPCTTIImpl::getMaxInterleaveFactor(unsigned VF) {
234 unsigned Directive = ST->getDarwinDirective(); 246 unsigned Directive = ST->getDarwinDirective();
235 // The 440 has no SIMD support, but floating-point instructions 247 // The 440 has no SIMD support, but floating-point instructions
236 // have a 5-cycle latency, so unroll by 5x for latency hiding. 248 // have a 5-cycle latency, so unroll by 5x for latency hiding.
237 if (Directive == PPC::DIR_440) 249 if (Directive == PPC::DIR_440)