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author | Dimitry Andric <dim@FreeBSD.org> | 2017-05-02 18:30:13 +0000 |
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committer | Dimitry Andric <dim@FreeBSD.org> | 2017-05-02 18:30:13 +0000 |
commit | a303c417bbdb53703c2c17398b08486bde78f1f6 (patch) | |
tree | 98366d6b93d863cefdc53f16c66c0c5ae7fb2261 /lib/CodeGen/TargetLoweringBase.cpp | |
parent | 12f3ca4cdb95b193af905a00e722a4dcb40b3de3 (diff) | |
download | src-a303c417bbdb53703c2c17398b08486bde78f1f6.tar.gz src-a303c417bbdb53703c2c17398b08486bde78f1f6.zip |
Vendor import of llvm trunk r301939:vendor/llvm/llvm-trunk-r301939
Notes
Notes:
svn path=/vendor/llvm/dist/; revision=317683
svn path=/vendor/llvm/llvm-trunk-r301939/; revision=317684; tag=vendor/llvm/llvm-trunk-r301939
Diffstat (limited to 'lib/CodeGen/TargetLoweringBase.cpp')
-rw-r--r-- | lib/CodeGen/TargetLoweringBase.cpp | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp index e579922bb69e..39aa946fa840 100644 --- a/lib/CodeGen/TargetLoweringBase.cpp +++ b/lib/CodeGen/TargetLoweringBase.cpp @@ -21,6 +21,7 @@ #include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineJumpTableInfo.h" +#include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/CodeGen/StackMaps.h" #include "llvm/IR/DataLayout.h" #include "llvm/IR/DerivedTypes.h" @@ -53,6 +54,18 @@ static cl::opt<unsigned> MaximumJumpTableSize ("max-jump-table-size", cl::init(0), cl::Hidden, cl::desc("Set maximum size of jump tables; zero for no limit.")); +/// Minimum jump table density for normal functions. +static cl::opt<unsigned> + JumpTableDensity("jump-table-density", cl::init(10), cl::Hidden, + cl::desc("Minimum density for building a jump table in " + "a normal function")); + +/// Minimum jump table density for -Os or -Oz functions. +static cl::opt<unsigned> OptsizeJumpTableDensity( + "optsize-jump-table-density", cl::init(40), cl::Hidden, + cl::desc("Minimum density for building a jump table in " + "an optsize function")); + // Although this default value is arbitrary, it is not random. It is assumed // that a condition that evaluates the same way by a higher percentage than this // is best represented as control flow. Therefore, the default value N should be @@ -910,6 +923,10 @@ void TargetLoweringBase::initActions() { setOperationAction(ISD::SMULO, VT, Expand); setOperationAction(ISD::UMULO, VT, Expand); + // ADDCARRY operations default to expand + setOperationAction(ISD::ADDCARRY, VT, Expand); + setOperationAction(ISD::SUBCARRY, VT, Expand); + // These default to Expand so they will be expanded to CTLZ/CTTZ by default. setOperationAction(ISD::CTLZ_ZERO_UNDEF, VT, Expand); setOperationAction(ISD::CTTZ_ZERO_UNDEF, VT, Expand); @@ -1901,6 +1918,10 @@ void TargetLoweringBase::setMinimumJumpTableEntries(unsigned Val) { MinimumJumpTableEntries = Val; } +unsigned TargetLoweringBase::getMinimumJumpTableDensity(bool OptForSize) const { + return OptForSize ? OptsizeJumpTableDensity : JumpTableDensity; +} + unsigned TargetLoweringBase::getMaximumJumpTableSize() const { return MaximumJumpTableSize; } @@ -2092,3 +2113,7 @@ int TargetLoweringBase::getDivRefinementSteps(EVT VT, MachineFunction &MF) const { return getOpRefinementSteps(false, VT, getRecipEstimateForFunc(MF)); } + +void TargetLoweringBase::finalizeLowering(MachineFunction &MF) const { + MF.getRegInfo().freezeReservedRegs(MF); +} |