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[SIL] Add attributes to swift builtins, specifically, the readnone attribute.

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Use the attribute when deciding if a call to a builtin can be eliminated as dead.

Swift SVN r7391
This commit is contained in:
Anna Zaks
2013-08-21 00:02:25 +00:00
parent 2f05d5c4df
commit 21ce68188d
10 changed files with 140 additions and 98 deletions
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8
lib/IRGen/GenFunc.cpp
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@@ -902,11 +902,11 @@ void irgen::emitBuiltinCall(IRGenFunction &IGF, FuncDecl *fn,
if (Builtin.ID == BuiltinValueKind::id) \
llvm_unreachable(name " builtin should be lowered away by SILGen!");
#define BUILTIN_CAST_OPERATION(id, name) \
#define BUILTIN_CAST_OPERATION(id, name, attrs) \
if (Builtin.ID == BuiltinValueKind::id) \
return emitCastBuiltin(IGF, fn, *out, args, llvm::Instruction::id);
#define BUILTIN_BINARY_OPERATION(id, name, overload) \
#define BUILTIN_BINARY_OPERATION(id, name, attrs, overload) \
if (Builtin.ID == BuiltinValueKind::id) { \
llvm::Value *lhs = args.claimNext(); \
llvm::Value *rhs = args.claimNext(); \
@@ -914,10 +914,10 @@ void irgen::emitBuiltinCall(IRGenFunction &IGF, FuncDecl *fn,
return out->add(v); \
}
#define BUILTIN_BINARY_PREDICATE(id, name, overload) \
#define BUILTIN_BINARY_PREDICATE(id, name, attrs, overload) \
if (Builtin.ID == BuiltinValueKind::id) \
return emitCompareBuiltin(IGF, fn, *out, args, llvm::CmpInst::id);
#define BUILTIN(ID, Name) // Ignore the rest.
#define BUILTIN(ID, Name, Attrs) // Ignore the rest.
#include "swift/AST/Builtins.def"
if (Builtin.ID == BuiltinValueKind::FNeg) {