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Enable vectorizer with LLVM 3.4+.

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The missing initialization code disables the vectorizer.
This commit is contained in:
kai 2014-02-04 07:18:32 +01:00
parent 5ded3ff54c
commit aaaca39a4e
1 changed files with 33 additions and 0 deletions
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33
gen/optimizer.cpp
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@ -122,6 +122,22 @@ cl::opt<opts::SanitizerCheck> opts::sanitize("sanitize",
clEnumValEnd)); clEnumValEnd));
#endif #endif
#if LDC_LLVM_VER >= 304
static cl::opt<bool>
disableLoopUnrolling("disable-loop-unrolling",
cl::desc("Disable loop unrolling in all relevant passes"),
cl::init(false));
static cl::opt<bool>
disableLoopVectorization("disable-loop-vectorization",
cl::desc("Disable the loop vectorization pass"),
cl::init(false));
static cl::opt<bool>
disableSLPVectorization("disable-slp-vectorization",
cl::desc("Disable the slp vectorization pass"),
cl::init(false));
#endif
static unsigned optLevel() { static unsigned optLevel() {
// Use -O2 as a base for the size-optimization levels. // Use -O2 as a base for the size-optimization levels.
return optimizeLevel >= 0 ? optimizeLevel : 2; return optimizeLevel >= 0 ? optimizeLevel : 2;
@ -232,7 +248,24 @@ static void addOptimizationPasses(PassManagerBase &mpm, FunctionPassManager &fpm
#endif #endif
builder.DisableUnitAtATime = !unitAtATime; builder.DisableUnitAtATime = !unitAtATime;
builder.DisableUnrollLoops = optLevel == 0; builder.DisableUnrollLoops = optLevel == 0;
#if LDC_LLVM_VER >= 304
builder.DisableUnrollLoops = (disableLoopUnrolling.getNumOccurrences() > 0) ?
disableLoopUnrolling : optLevel == 0;
// This is final, unless there is a #pragma vectorize enable
if (disableLoopVectorization)
builder.LoopVectorize = false;
// If option wasn't forced via cmd line (-vectorize-loops, -loop-vectorize)
else if (!builder.LoopVectorize)
builder.LoopVectorize = optLevel > 1 && sizeLevel < 2;
// When #pragma vectorize is on for SLP, do the same as above
builder.SLPVectorize =
disableSLPVectorization ? false : optLevel > 1 && sizeLevel < 2;
#else
/* builder.Vectorize is set in ctor from command line switch */ /* builder.Vectorize is set in ctor from command line switch */
#endif
#if LDC_LLVM_VER >= 303 #if LDC_LLVM_VER >= 303
if (opts::sanitize == opts::AddressSanitizer) { if (opts::sanitize == opts::AddressSanitizer) {