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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
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interp/interp.go
+5 -6
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@@ -21,7 +21,7 @@ type runner struct {
targetData llvm.TargetData
builder llvm.Builder
pointerSize uint32 // cached pointer size from the TargetData
i8ptrType llvm.Type // often used type so created in advance
dataPtrType llvm.Type // often used type so created in advance
uintptrType llvm.Type // equivalent to uintptr in Go
maxAlign int // maximum alignment of an object, alignment of runtime.alloc() result
debug bool // log debug messages
@@ -46,9 +46,9 @@ func newRunner(mod llvm.Module, timeout time.Duration, debug bool) *runner {
timeout: timeout,
}
r.pointerSize = uint32(r.targetData.PointerSize())
r.i8ptrType = llvm.PointerType(mod.Context().Int8Type(), 0)
r.dataPtrType = llvm.PointerType(mod.Context().Int8Type(), 0)
r.uintptrType = mod.Context().IntType(r.targetData.PointerSize() * 8)
r.maxAlign = r.targetData.PrefTypeAlignment(r.i8ptrType) // assume pointers are maximally aligned (this is not always the case)
r.maxAlign = r.targetData.PrefTypeAlignment(r.dataPtrType) // assume pointers are maximally aligned (this is not always the case)
return &r
}
@@ -126,7 +126,7 @@ func Run(mod llvm.Module, timeout time.Duration, debug bool) error {
mem.revert()
// Create a call to the package initializer (which was
// previously deleted).
i8undef := llvm.Undef(r.i8ptrType)
i8undef := llvm.Undef(r.dataPtrType)
r.builder.CreateCall(fn.GlobalValueType(), fn, []llvm.Value{i8undef}, "")
// Make sure that any globals touched by the package
// initializer, won't be accessed by later package initializers.
@@ -174,8 +174,7 @@ func Run(mod llvm.Module, timeout time.Duration, debug bool) error {
newGlobal.SetLinkage(obj.llvmGlobal.Linkage())
newGlobal.SetAlignment(obj.llvmGlobal.Alignment())
// TODO: copy debug info, unnamed_addr, ...
bitcast := llvm.ConstBitCast(newGlobal, obj.llvmGlobal.Type())
obj.llvmGlobal.ReplaceAllUsesWith(bitcast)
obj.llvmGlobal.ReplaceAllUsesWith(newGlobal)
name := obj.llvmGlobal.Name()
obj.llvmGlobal.EraseFromParentAsGlobal()
newGlobal.SetName(name)