diff options
| author | Chris Lattner <sabre@nondot.org> | 2011-02-06 21:44:57 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2011-02-06 21:44:57 +0000 |
| commit | 35bda8914c0d1c02a6f90f42e7810c83150737e1 (patch) | |
| tree | b210ccd009a7ac5331c76c6393b5b45d141d12d0 /lib/AsmParser/LLParser.cpp | |
| parent | bd75021465e7f8c81785e692cfd3ce559764e46f (diff) | |
enhance vmcore to know that udiv's can be exact, and add a trivial
instcombine xform to exercise this.
Nothing forms exact udivs yet though. This is progress on PR8862
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124992 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AsmParser/LLParser.cpp')
| -rw-r--r-- | lib/AsmParser/LLParser.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp index 8ef4634417..6d71c9e3e6 100644 --- a/lib/AsmParser/LLParser.cpp +++ b/lib/AsmParser/LLParser.cpp @@ -2304,7 +2304,7 @@ bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) { if (EatIfPresent(lltok::kw_nuw)) NUW = true; } - } else if (Opc == Instruction::SDiv) { + } else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv) { if (EatIfPresent(lltok::kw_exact)) Exact = true; } @@ -2347,7 +2347,7 @@ bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) { unsigned Flags = 0; if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap; if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap; - if (Exact) Flags |= SDivOperator::IsExact; + if (Exact) Flags |= PossiblyExactOperator::IsExact; Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags); ID.ConstantVal = C; ID.Kind = ValID::t_Constant; @@ -3032,7 +3032,8 @@ int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB, case lltok::kw_fsub: case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2); - case lltok::kw_sdiv: { + case lltok::kw_sdiv: + case lltok::kw_udiv: { bool Exact = false; if (EatIfPresent(lltok::kw_exact)) Exact = true; @@ -3043,7 +3044,6 @@ int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB, return Result; } - case lltok::kw_udiv: case lltok::kw_urem: case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1); case lltok::kw_fdiv: |