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implement .ll and .bc support for nsw/nuw on shl and exact on lshr/ashr.

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Factor some code better.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125006 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2011-02-07 16:40:21 +00:00
parent 163a84bbce
commit f067d584a8
8 changed files with 239 additions and 211 deletions
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74
lib/AsmParser/LLParser.cpp
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@@ -2286,7 +2286,10 @@ bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
case lltok::kw_fdiv:
case lltok::kw_urem:
case lltok::kw_srem:
case lltok::kw_frem: {
case lltok::kw_frem:
case lltok::kw_shl:
case lltok::kw_lshr:
case lltok::kw_ashr: {
bool NUW = false;
bool NSW = false;
bool Exact = false;
@@ -2294,9 +2297,8 @@ bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
Constant *Val0, *Val1;
Lex.Lex();
LocTy ModifierLoc = Lex.getLoc();
if (Opc == Instruction::Add ||
Opc == Instruction::Sub ||
Opc == Instruction::Mul) {
if (Opc == Instruction::Add || Opc == Instruction::Sub ||
Opc == Instruction::Mul || Opc == Instruction::Shl) {
if (EatIfPresent(lltok::kw_nuw))
NUW = true;
if (EatIfPresent(lltok::kw_nsw)) {
@@ -2304,7 +2306,8 @@ bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
if (EatIfPresent(lltok::kw_nuw))
NUW = true;
}
} else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv) {
} else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
Opc == Instruction::LShr || Opc == Instruction::AShr) {
if (EatIfPresent(lltok::kw_exact))
Exact = true;
}
@@ -2331,6 +2334,9 @@ bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
case Instruction::SDiv:
case Instruction::URem:
case Instruction::SRem:
case Instruction::Shl:
case Instruction::AShr:
case Instruction::LShr:
if (!Val0->getType()->isIntOrIntVectorTy())
return Error(ID.Loc, "constexpr requires integer operands");
break;
@@ -2355,9 +2361,6 @@ bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
}
// Logical Operations
case lltok::kw_shl:
case lltok::kw_lshr:
case lltok::kw_ashr:
case lltok::kw_and:
case lltok::kw_or:
case lltok::kw_xor: {
@@ -3002,55 +3005,38 @@ int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
// Binary Operators.
case lltok::kw_add:
case lltok::kw_sub:
case lltok::kw_mul: {
bool NUW = false;
bool NSW = false;
case lltok::kw_mul:
case lltok::kw_shl: {
LocTy ModifierLoc = Lex.getLoc();
if (EatIfPresent(lltok::kw_nuw))
NUW = true;
if (EatIfPresent(lltok::kw_nsw)) {
NSW = true;
if (EatIfPresent(lltok::kw_nuw))
NUW = true;
}
bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
if (!Result) {
if (!Inst->getType()->isIntOrIntVectorTy()) {
if (NUW)
return Error(ModifierLoc, "nuw only applies to integer operations");
if (NSW)
return Error(ModifierLoc, "nsw only applies to integer operations");
}
if (NUW)
cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
if (NSW)
cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
}
return Result;
bool NUW = EatIfPresent(lltok::kw_nuw);
bool NSW = EatIfPresent(lltok::kw_nsw);
if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
return false;
}
case lltok::kw_fadd:
case lltok::kw_fsub:
case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
case lltok::kw_sdiv:
case lltok::kw_udiv: {
bool Exact = false;
if (EatIfPresent(lltok::kw_exact))
Exact = true;
bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
if (!Result)
if (Exact)
cast<BinaryOperator>(Inst)->setIsExact(true);
return Result;
case lltok::kw_udiv:
case lltok::kw_lshr:
case lltok::kw_ashr: {
bool Exact = EatIfPresent(lltok::kw_exact);
if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
return false;
}
case lltok::kw_urem:
case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
case lltok::kw_fdiv:
case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
case lltok::kw_shl:
case lltok::kw_lshr:
case lltok::kw_ashr:
case lltok::kw_and:
case lltok::kw_or:
case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);