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| author | dim <dim@FreeBSD.org> | 2015-07-05 14:21:36 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2015-07-05 14:21:36 +0000 |
| commit | d2fc7c7001ed3babcd0106d15dd70224abfb6f29 (patch) | |
| tree | 7c411f9b5d807f7f204fdd16965d8925a82b6d18 /lib/CodeGen/TargetLoweringBase.cpp | |
| parent | 60174f118de85cbcad51deb11c650f22c9be2235 (diff) | |
| download | FreeBSD-src-d2fc7c7001ed3babcd0106d15dd70224abfb6f29.zip FreeBSD-src-d2fc7c7001ed3babcd0106d15dd70224abfb6f29.tar.gz | |
Vendor import of llvm trunk r241361:
https://llvm.org/svn/llvm-project/llvm/trunk@241361
Diffstat (limited to 'lib/CodeGen/TargetLoweringBase.cpp')
| -rw-r--r-- | lib/CodeGen/TargetLoweringBase.cpp | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp index 1bc89aa..78492a6 100644 --- a/lib/CodeGen/TargetLoweringBase.cpp +++ b/lib/CodeGen/TargetLoweringBase.cpp @@ -38,6 +38,11 @@ #include <cctype> using namespace llvm; +static cl::opt<bool> JumpIsExpensiveOverride( + "jump-is-expensive", cl::init(false), + cl::desc("Do not create extra branches to split comparison logic."), + cl::Hidden); + /// InitLibcallNames - Set default libcall names. /// static void InitLibcallNames(const char **Names, const Triple &TT) { @@ -757,7 +762,7 @@ TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm) : TM(tm) { IntDivIsCheap = false; FsqrtIsCheap = false; Pow2SDivIsCheap = false; - JumpIsExpensive = false; + JumpIsExpensive = JumpIsExpensiveOverride; PredictableSelectIsExpensive = false; MaskAndBranchFoldingIsLegal = false; EnableExtLdPromotion = false; @@ -778,7 +783,7 @@ TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm) : TM(tm) { InsertFencesForAtomic = false; MinimumJumpTableEntries = 4; - InitLibcallNames(LibcallRoutineNames, Triple(TM.getTargetTriple())); + InitLibcallNames(LibcallRoutineNames, TM.getTargetTriple()); InitCmpLibcallCCs(CmpLibcallCCs); InitLibcallCallingConvs(LibcallCallingConvs); } @@ -915,6 +920,12 @@ bool TargetLoweringBase::canOpTrap(unsigned Op, EVT VT) const { } } +void TargetLoweringBase::setJumpIsExpensive(bool isExpensive) { + // If the command-line option was specified, ignore this request. + if (!JumpIsExpensiveOverride.getNumOccurrences()) + JumpIsExpensive = isExpensive; +} + TargetLoweringBase::LegalizeKind TargetLoweringBase::getTypeConversion(LLVMContext &Context, EVT VT) const { // If this is a simple type, use the ComputeRegisterProp mechanism. |
