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annotate gen/abi-generic.h @ 1650:40bd4a0d4870

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Update to work with LLVM 2.7. Removed use of dyn_cast, llvm no compiles without exceptions and rtti by default. We do need exceptions for the libconfig stuff, but rtti isn't necessary (anymore). Debug info needs to be rewritten, as in LLVM 2.7 the format has completely changed. To have something to look at while rewriting, the old code has been wrapped inside #ifndef DISABLE_DEBUG_INFO , this means that you have to define this to compile at the moment. Updated tango 0.99.9 patch to include updated EH runtime code, which is needed for LLVM 2.7 as well.
author Tomas Lindquist Olsen
date Wed, 19 May 2010 12:42:32 +0200
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1 #ifndef LDC_GEN_ABI_GENERIC
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2 #define LDC_GEN_ABI_GENERIC
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3
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4 #include "gen/llvmhelpers.h"
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5 #include "gen/tollvm.h"
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6 #include "gen/structs.h"
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7
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8 /// Removes padding fields for (non-union-containing!) structs
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9 struct RemoveStructPadding : ABIRewrite {
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10 /// get a rewritten value back to its original form
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11 virtual LLValue* get(Type* dty, DValue* v) {
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12 LLValue* lval = DtoAlloca(dty, ".rewritetmp");
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13
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14 // Make sure the padding is zero, so struct comparisons work.
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15 // TODO: Only do this if there's padding, and/or only initialize padding.
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16 DtoMemSetZero(lval, DtoConstSize_t(getTypePaddedSize(DtoType(dty))));
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17
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18 DtoPaddedStruct(dty, v->getRVal(), lval);
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19 return lval;
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20 }
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21
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22 /// get a rewritten value back to its original form and store result in provided lvalue
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23 /// this one is optional and defaults to calling the one above
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24 virtual void getL(Type* dty, DValue* v, llvm::Value* lval) {
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25 DtoPaddedStruct(dty, v->getRVal(), lval);
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26 }
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27
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28 /// put out rewritten value
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29 virtual LLValue* put(Type* dty, DValue* v) {
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30 return DtoUnpaddedStruct(dty, v->getRVal());
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31 }
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32
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33 /// return the transformed type for this rewrite
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34 virtual const LLType* type(Type* dty, const LLType* t) {
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35 return DtoUnpaddedStructType(dty);
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36 }
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37 };
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38
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39 #endif