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all: remove LLVM 14 support

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This is a big change: apart from removing LLVM 14 it also removes typed
pointer support (which was only fully supported in LLVM up to version
14). This removes about 200 lines of code, but more importantly removes
a ton of special cases for LLVM 14.
This commit is contained in:
Ayke van Laethem
2023-09-18 17:54:29 +02:00
committed by Ayke
parent c9721197d5
commit 1da1abe314
33 changed files with 247 additions and 467 deletions
Download Patch File Download Diff File Expand all files Collapse all files
interp/memory.go
+4 -15
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@@ -658,20 +658,11 @@ func (v pointerValue) toLLVMValue(llvmType llvm.Type, mem *memoryView) (llvm.Val
if v.offset() != 0 {
// If there is an offset, make sure to use a GEP to index into the
// pointer.
// Cast to an i8* first (if needed) for easy indexing.
if llvmValue.Type() != mem.r.i8ptrType {
llvmValue = llvm.ConstBitCast(llvmValue, mem.r.i8ptrType)
}
llvmValue = llvm.ConstInBoundsGEP(mem.r.mod.Context().Int8Type(), llvmValue, []llvm.Value{
llvm.ConstInt(mem.r.mod.Context().Int32Type(), uint64(v.offset()), false),
})
}
// If a particular LLVM pointer type is requested, cast to it.
if !llvmType.IsNil() && llvmType != llvmValue.Type() {
llvmValue = llvm.ConstBitCast(llvmValue, llvmType)
}
return llvmValue, nil
}
@@ -872,7 +863,7 @@ func (v rawValue) toLLVMValue(llvmType llvm.Type, mem *memoryView) (llvm.Value,
if err != nil {
panic(err)
}
if checks && mem.r.targetData.TypeAllocSize(llvmType) != mem.r.targetData.TypeAllocSize(mem.r.i8ptrType) {
if checks && mem.r.targetData.TypeAllocSize(llvmType) != mem.r.targetData.TypeAllocSize(mem.r.dataPtrType) {
// Probably trying to serialize a pointer to a byte array,
// perhaps as a result of rawLLVMValue() in a previous interp
// run.
@@ -954,8 +945,6 @@ func (v rawValue) toLLVMValue(llvmType llvm.Type, mem *memoryView) (llvm.Value,
// Because go-llvm doesn't have addrspacecast at the moment,
// do it indirectly with a ptrtoint/inttoptr pair.
llvmValue = llvm.ConstIntToPtr(llvm.ConstPtrToInt(llvmValue, mem.r.uintptrType), llvmType)
} else {
llvmValue = llvm.ConstBitCast(llvmValue, llvmType)
}
}
return llvmValue, nil
@@ -1256,7 +1245,7 @@ func (r *runner) getValue(llvmValue llvm.Value) value {
// For details on this format, see src/runtime/gc_precise.go.
func (r *runner) readObjectLayout(layoutValue value) (uint64, *big.Int) {
pointerSize := layoutValue.len(r)
if checks && uint64(pointerSize) != r.targetData.TypeAllocSize(r.i8ptrType) {
if checks && uint64(pointerSize) != r.targetData.TypeAllocSize(r.dataPtrType) {
panic("inconsistent pointer size")
}
@@ -1331,12 +1320,12 @@ func (r *runner) getLLVMTypeFromLayout(layoutValue value) llvm.Type {
// Create the LLVM type.
pointerSize := layoutValue.len(r)
pointerAlignment := r.targetData.PrefTypeAlignment(r.i8ptrType)
pointerAlignment := r.targetData.PrefTypeAlignment(r.dataPtrType)
var fields []llvm.Type
for i := 0; i < int(objectSizeWords); {
if bitmap.Bit(i) != 0 {
// Pointer field.
fields = append(fields, r.i8ptrType)
fields = append(fields, r.dataPtrType)
i += int(pointerSize / uint32(pointerAlignment))
} else {
// Byte/word field.