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bitcode support change for fast flags compatibility

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Summary: The discussion and as per need, each vendor needs a way to keep the old fast flags and the new fast flags in the auto upgrade path of the IR upgrader.  This revision addresses that issue.

Patched by Michael Berg

Reviewers: qcolombet, hans, steven_wu

Reviewed By: qcolombet, steven_wu

Subscribers: dexonsmith, vsk, mehdi_amini, andrewrk, MatzeB, wristow, spatel

Differential Revision: https://reviews.llvm.org/D43253

llvm-svn: 325525
This commit is contained in:
Steven Wu
2018-02-19 19:22:28 +00:00
parent 65207923f6
commit 545d34a272
9 changed files with 41 additions and 45 deletions
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16
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
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@@ -1334,19 +1334,19 @@ static uint64_t getOptimizationFlags(const Value *V) {
Flags |= 1 << bitc::PEO_EXACT;
} else if (const auto *FPMO = dyn_cast<FPMathOperator>(V)) {
if (FPMO->hasAllowReassoc())
Flags |= FastMathFlags::AllowReassoc;
Flags |= bitc::AllowReassoc;
if (FPMO->hasNoNaNs())
Flags |= FastMathFlags::NoNaNs;
Flags |= bitc::NoNaNs;
if (FPMO->hasNoInfs())
Flags |= FastMathFlags::NoInfs;
Flags |= bitc::NoInfs;
if (FPMO->hasNoSignedZeros())
Flags |= FastMathFlags::NoSignedZeros;
Flags |= bitc::NoSignedZeros;
if (FPMO->hasAllowReciprocal())
Flags |= FastMathFlags::AllowReciprocal;
Flags |= bitc::AllowReciprocal;
if (FPMO->hasAllowContract())
Flags |= FastMathFlags::AllowContract;
Flags |= bitc::AllowContract;
if (FPMO->hasApproxFunc())
Flags |= FastMathFlags::ApproxFunc;
Flags |= bitc::ApproxFunc;
}
return Flags;
@@ -3196,7 +3196,7 @@ void ModuleBitcodeWriter::writeBlockInfo() {
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LHS
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // RHS
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // opc
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 7)); // flags
Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 8)); // flags
if (Stream.EmitBlockInfoAbbrev(bitc::FUNCTION_BLOCK_ID, Abbv) !=
FUNCTION_INST_BINOP_FLAGS_ABBREV)
llvm_unreachable("Unexpected abbrev ordering!");