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Skip superfluous IR pointer bitcasts, now that they are always opaque

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This commit is contained in:
Martin Kinkelin 2024-05-19 17:59:21 +02:00
parent ee9f3a142c
commit d140f2a283
28 changed files with 182 additions and 399 deletions
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13
gen/nested.cpp
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@ -138,9 +138,8 @@ DValue *DtoNestedVariable(const Loc &loc, Type *astype, VarDeclaration *vd,
// Extract variable from nested context
assert(irfunc->frameType);
const auto pframeType = LLPointerType::getUnqual(irfunc->frameType);
IF_LOG { Logger::cout() << "casting to: " << *irfunc->frameType << '\n'; }
LLValue *val = DtoBitCast(ctx, pframeType);
LLValue *val = ctx;
llvm::StructType *currFrame = irfunc->frameType;
// Make the DWARF variable address relative to the context pointer (ctx);
// register all ops (offsetting, dereferencing) required to get there in the
@ -228,7 +227,7 @@ void DtoResolveNestedContext(const Loc &loc, AggregateDeclaration *decl,
unsigned idx = getVthisIdx(decl);
llvm::StructType *st = getIrAggr(decl)->getLLStructType();
LLValue *gep = DtoGEP(st, value, 0, idx, ".vthis");
DtoStore(DtoBitCast(nest, st->getElementType(idx)), gep);
DtoStore(nest, gep);
}
}
@ -343,7 +342,6 @@ LLValue *DtoNestedContext(const Loc &loc, Dsymbol *sym) {
"Calling sibling function or directly nested function");
} else {
llvm::StructType *type = getIrFunc(ctxfd)->frameType;
val = DtoBitCast(val, LLPointerType::getUnqual(type));
val = DtoGEP(type, val, 0, neededDepth);
val = DtoAlignedLoad(type->getElementType(neededDepth),
val, (std::string(".frame.") + frameToPass->toChars()).c_str());
@ -503,7 +501,7 @@ void DtoCreateNestedContext(FuncGenState &funcGen) {
LLValue *mem =
gIR->CreateCallOrInvoke(fn, DtoConstSize_t(size), ".gc_frame");
if (frameAlignment <= 16) {
frame = DtoBitCast(mem, frameType->getPointerTo(), ".frame");
frame = mem;
} else {
const uint64_t mask = frameAlignment - 1;
mem = gIR->ir->CreatePtrToInt(mem, DtoSize_t());
@ -529,14 +527,11 @@ void DtoCreateNestedContext(FuncGenState &funcGen) {
src = indexVThis(ad, thisptr);
}
if (depth > 1) {
src = DtoBitCast(src, getVoidPtrType());
LLValue *dst = DtoBitCast(frame, getVoidPtrType());
DtoMemCpy(dst, src, DtoConstSize_t((depth - 1) * target.ptrsize),
DtoMemCpy(frame, src, DtoConstSize_t((depth - 1) * target.ptrsize),
getABITypeAlign(getVoidPtrType()));
}
// Copy nestArg into framelist; the outer frame is not in the list of
// pointers
src = DtoBitCast(src, frameType->getContainedType(depth - 1));
LLValue *gep = DtoGEP(frameType, frame, 0, depth - 1);
DtoAlignedStore(src, gep);
}