Emit global strings in the correct address space.

maleadt · maleadt · commit c447e5aca003 · 2025-06-16T15:14:24.000+02:00
diff --git a/Project.toml b/Project.toml
@@ -1,6 +1,6 @@
 name = "LLVM"
 uuid = "929cbde3-209d-540e-8aea-75f648917ca0"
-version = "9.4.0"
+version = "9.4.1"
 
 [deps]
 CEnum = "fa961155-64e5-5f13-b03f-caf6b980ea82"
diff --git a/deps/LLVMExtra/include/LLVMExtra.h b/deps/LLVMExtra/include/LLVMExtra.h
@@ -255,5 +255,8 @@ LLVMErrorRef LLVMRunJuliaPassesOnFunction(LLVMValueRef F, const char *Passes,
                                           LLVMPassBuilderOptionsRef Options,
                                           LLVMPassBuilderExtensionsRef Extensions);
 
+// More DataLayout queries
+unsigned LLVMGlobalsAddressSpace(LLVMTargetDataRef TD);
+
 LLVM_C_EXTERN_C_END
 #endif
diff --git a/deps/LLVMExtra/lib/Core.cpp b/deps/LLVMExtra/lib/Core.cpp
@@ -795,6 +795,15 @@ LLVMContextRef LLVMGetBuilderContext(LLVMBuilderRef Builder) {
   return wrap(&unwrap(Builder)->getContext());
 }
 
+
+//
+// More DataLayout queries
+//
+
+unsigned LLVMGlobalsAddressSpace(LLVMTargetDataRef TD) {
+  return unwrap(TD)->getDefaultGlobalsAddressSpace();
+}
+
 #endif
 
 #endif
diff --git a/docs/src/lib/codegen.md b/docs/src/lib/codegen.md
@@ -38,6 +38,7 @@ dispose(::DataLayout)
 byteorder
 pointersize
 intptr
+globals_addrspace
 sizeof(::DataLayout, ::LLVMType)
 storage_size
 abi_size
diff --git a/docs/src/man/codegen.md b/docs/src/man/codegen.md
@@ -153,6 +153,7 @@ generating IR:
 - `byteorder`
 - `pointersize`
 - `intptr`
+- `globals_addrspace`
 - `sizeof`
 - `storage_size`
 - `abi_alignment`
diff --git a/lib/15/libLLVM_extra.jl b/lib/15/libLLVM_extra.jl
@@ -401,3 +401,7 @@ function LLVMRunJuliaPassesOnFunction(F, Passes, TM, Options, Extensions)
     ccall((:LLVMRunJuliaPassesOnFunction, libLLVMExtra), LLVMErrorRef, (LLVMValueRef, Cstring, LLVMTargetMachineRef, LLVMPassBuilderOptionsRef, LLVMPassBuilderExtensionsRef), F, Passes, TM, Options, Extensions)
 end
 
+function LLVMGlobalsAddressSpace(TD)
+    ccall((:LLVMGlobalsAddressSpace, libLLVMExtra), Cuint, (LLVMTargetDataRef,), TD)
+end
+
diff --git a/lib/16/libLLVM_extra.jl b/lib/16/libLLVM_extra.jl
@@ -401,3 +401,7 @@ function LLVMRunJuliaPassesOnFunction(F, Passes, TM, Options, Extensions)
     ccall((:LLVMRunJuliaPassesOnFunction, libLLVMExtra), LLVMErrorRef, (LLVMValueRef, Cstring, LLVMTargetMachineRef, LLVMPassBuilderOptionsRef, LLVMPassBuilderExtensionsRef), F, Passes, TM, Options, Extensions)
 end
 
+function LLVMGlobalsAddressSpace(TD)
+    ccall((:LLVMGlobalsAddressSpace, libLLVMExtra), Cuint, (LLVMTargetDataRef,), TD)
+end
+
diff --git a/lib/17/libLLVM_extra.jl b/lib/17/libLLVM_extra.jl
@@ -361,3 +361,7 @@ function LLVMRunJuliaPassesOnFunction(F, Passes, TM, Options, Extensions)
     ccall((:LLVMRunJuliaPassesOnFunction, libLLVMExtra), LLVMErrorRef, (LLVMValueRef, Cstring, LLVMTargetMachineRef, LLVMPassBuilderOptionsRef, LLVMPassBuilderExtensionsRef), F, Passes, TM, Options, Extensions)
 end
 
+function LLVMGlobalsAddressSpace(TD)
+    ccall((:LLVMGlobalsAddressSpace, libLLVMExtra), Cuint, (LLVMTargetDataRef,), TD)
+end
+
diff --git a/lib/18/libLLVM_extra.jl b/lib/18/libLLVM_extra.jl
@@ -295,3 +295,7 @@ function LLVMRunJuliaPassesOnFunction(F, Passes, TM, Options, Extensions)
     ccall((:LLVMRunJuliaPassesOnFunction, libLLVMExtra), LLVMErrorRef, (LLVMValueRef, Cstring, LLVMTargetMachineRef, LLVMPassBuilderOptionsRef, LLVMPassBuilderExtensionsRef), F, Passes, TM, Options, Extensions)
 end
 
+function LLVMGlobalsAddressSpace(TD)
+    ccall((:LLVMGlobalsAddressSpace, libLLVMExtra), Cuint, (LLVMTargetDataRef,), TD)
+end
+
diff --git a/lib/19/libLLVM_extra.jl b/lib/19/libLLVM_extra.jl
@@ -295,3 +295,7 @@ function LLVMRunJuliaPassesOnFunction(F, Passes, TM, Options, Extensions)
     ccall((:LLVMRunJuliaPassesOnFunction, libLLVMExtra), LLVMErrorRef, (LLVMValueRef, Cstring, LLVMTargetMachineRef, LLVMPassBuilderOptionsRef, LLVMPassBuilderExtensionsRef), F, Passes, TM, Options, Extensions)
 end
 
+function LLVMGlobalsAddressSpace(TD)
+    ccall((:LLVMGlobalsAddressSpace, libLLVMExtra), Cuint, (LLVMTargetDataRef,), TD)
+end
+
diff --git a/lib/20/libLLVM_extra.jl b/lib/20/libLLVM_extra.jl
@@ -247,3 +247,7 @@ function LLVMRunJuliaPassesOnFunction(F, Passes, TM, Options, Extensions)
     ccall((:LLVMRunJuliaPassesOnFunction, libLLVMExtra), LLVMErrorRef, (LLVMValueRef, Cstring, LLVMTargetMachineRef, LLVMPassBuilderOptionsRef, LLVMPassBuilderExtensionsRef), F, Passes, TM, Options, Extensions)
 end
 
+function LLVMGlobalsAddressSpace(TD)
+    ccall((:LLVMGlobalsAddressSpace, libLLVMExtra), Cuint, (LLVMTargetDataRef,), TD)
+end
+
diff --git a/src/datalayout.jl b/src/datalayout.jl
@@ -1,7 +1,7 @@
 ## data layout
 
 export DataLayout, dispose,
-       byteorder, pointersize, intptr,
+       byteorder, pointersize, intptr, globals_addrspace,
        sizeof, storage_size, abi_size,
        abi_alignment, frame_alignment, preferred_alignment,
        element_at, offsetof
@@ -38,119 +38,126 @@ This object needs to be disposed of using [`dispose`](@ref).
 DataLayout(tm::TargetMachine) = mark_alloc(DataLayout(API.LLVMCreateTargetDataLayout(tm)))
 
 """
-    dispose(data::DataLayout)
+    dispose(dl::DataLayout)
 
 Dispose of the given target data layout.
 """
-dispose(data::DataLayout) = mark_dispose(API.LLVMDisposeTargetData, data)
+dispose(dl::DataLayout) = mark_dispose(API.LLVMDisposeTargetData, dl)
 
 function DataLayout(f::Core.Function, args...; kwargs...)
-    data = DataLayout(args...; kwargs...)
+    dl = DataLayout(args...; kwargs...)
     try
-        f(data)
+        f(dl)
     finally
-        dispose(data)
+        dispose(dl)
     end
 end
 
-Base.string(data::DataLayout) =
-    unsafe_message(API.LLVMCopyStringRepOfTargetData(data))
+Base.string(dl::DataLayout) =
+    unsafe_message(API.LLVMCopyStringRepOfTargetData(dl))
 
-function Base.show(io::IO, data::DataLayout)
-    @printf(io, "DataLayout(%s)", string(data))
+function Base.show(io::IO, dl::DataLayout)
+    @printf(io, "DataLayout(%s)", string(dl))
 end
 
 """
-    byteorder(data::DataLayout)
+    byteorder(dl::DataLayout)
 
 Get the byte order of the target data layout.
 """
-byteorder(data::DataLayout) = API.LLVMByteOrder(data)
+byteorder(dl::DataLayout) = API.LLVMByteOrder(dl)
 
 """
-    pointersize(data::DataLayout, [addrspace::Integer])
+    pointersize(dl::DataLayout, [addrspace::Integer])
 
 Get the pointer size of the target data layout.
 """
-pointersize(data::DataLayout, addrspace::Integer=0) =
-    API.LLVMPointerSizeForAS(data, addrspace)
+pointersize(dl::DataLayout, addrspace::Integer=0) =
+    API.LLVMPointerSizeForAS(dl, addrspace)
 
 """
-    intptr(data::DataLayout, [addrspace::Integer])
+    intptr(dl::DataLayout, [addrspace::Integer])
 
 Get the integer type that is the same size as a pointer for the target data layout.
 """
-intptr(data::DataLayout, addrspace::Integer=0) =
-    IntegerType(API.LLVMIntPtrTypeForASInContext(context(), data, addrspace))
+intptr(dl::DataLayout, addrspace::Integer=0) =
+    IntegerType(API.LLVMIntPtrTypeForASInContext(context(), dl, addrspace))
 
 """
-    sizeof(data::DataLayout, typ::LLVMType)
+    globals_addrspace(dl::DataLayout)
+
+Get the address space used for global variables in the target data layout.
+"""
+globals_addrspace(dl::DataLayout) = API.LLVMGlobalsAddressSpace(dl) |> Int
+
+"""
+    sizeof(dl::DataLayout, typ::LLVMType)
 
 Get the size of the given type in bytes for the target data layout.
 """
-Base.sizeof(data::DataLayout, typ::LLVMType) = Int(API.LLVMSizeOfTypeInBits(data, typ) / 8)
+Base.sizeof(dl::DataLayout, typ::LLVMType) = Int(API.LLVMSizeOfTypeInBits(dl, typ) / 8)
 
 """
-    storage_size(data::DataLayout, typ::LLVMType)
+    storage_size(dl::DataLayout, typ::LLVMType)
 
 Get the storage size of the given type in bytes for the target data layout.
 """
-storage_size(data::DataLayout, typ::LLVMType) = API.LLVMStoreSizeOfType(data, typ)
+storage_size(dl::DataLayout, typ::LLVMType) = API.LLVMStoreSizeOfType(dl, typ)
 
 """
-    abi_size(data::DataLayout, typ::LLVMType)
+    abi_size(dl::DataLayout, typ::LLVMType)
 
 Get the ABI size of the given type in bytes for the target data layout.
 """
-abi_size(data::DataLayout, typ::LLVMType) = API.LLVMABISizeOfType(data, typ)
+abi_size(dl::DataLayout, typ::LLVMType) = API.LLVMABISizeOfType(dl, typ)
 
 """
-    abi_alignment(data::DataLayout, typ::LLVMType)
+    abi_alignment(dl::DataLayout, typ::LLVMType)
 
 Get the ABI alignment of the given type in bytes for the target data layout.
 """
-abi_alignment(data::DataLayout, typ::LLVMType) =
-    API.LLVMABIAlignmentOfType(data, typ)
+abi_alignment(dl::DataLayout, typ::LLVMType) =
+    API.LLVMABIAlignmentOfType(dl, typ)
 
 """
-    frame_alignment(data::DataLayout, typ::LLVMType)
+    frame_alignment(dl::DataLayout, typ::LLVMType)
 
 Get the call frame alignment of the given type in bytes for the target data layout.
 """
-frame_alignment(data::DataLayout, typ::LLVMType) =
-    API.LLVMCallFrameAlignmentOfType(data, typ)
+frame_alignment(dl::DataLayout, typ::LLVMType) =
+    API.LLVMCallFrameAlignmentOfType(dl, typ)
 
 
 """
-    preferred_alignment(data::DataLayout, typ::LLVMType)
-    preferred_alignment(data::DataLayout, var::GlobalVariable)
+    preferred_alignment(dl::DataLayout, typ::LLVMType)
+    preferred_alignment(dl::DataLayout, var::GlobalVariable)
 
 Get the preferred alignment of the given type or global variable in bytes for the target
 data layout.
 """
 preferred_alignment(::DataLayout, ::Union{LLVMType, GlobalVariable})
 
-preferred_alignment(data::DataLayout, typ::LLVMType) =
-    API.LLVMPreferredAlignmentOfType(data, typ)
-preferred_alignment(data::DataLayout, var::GlobalVariable) =
-    API.LLVMPreferredAlignmentOfGlobal(data, var)
+preferred_alignment(dl::DataLayout, typ::LLVMType) =
+    API.LLVMPreferredAlignmentOfType(dl, typ)
+preferred_alignment(dl::DataLayout, var::GlobalVariable) =
+    API.LLVMPreferredAlignmentOfGlobal(dl, var)
 
 """
-    element_at(data::DataLayout, typ::StructType, offset::Integer)
+    element_at(dl::DataLayout, typ::StructType, offset::Integer)
 
 Get the element at the given offset in a struct type for the target data layout.
 
 See also: [`offsetof`](@ref).
 """
-element_at(data::DataLayout, typ::StructType, offset::Integer) =
-    API.LLVMElementAtOffset(data, typ, Culonglong(offset))
+element_at(dl::DataLayout, typ::StructType, offset::Integer) =
+    API.LLVMElementAtOffset(dl, typ, Culonglong(offset))
 
 """
-    offsetof(data::DataLayout, typ::StructType, element::Integer)
+    offsetof(dl::DataLayout, typ::StructType, element::Integer)
 
 Get the offset of the given element in a struct type for the target data layout.
 
 See also: [`element_at`](@ref).
 """
-offsetof(data::DataLayout, typ::StructType, element::Integer) =
-    API.LLVMOffsetOfElement(data, typ, element)
+offsetof(dl::DataLayout, typ::StructType, element::Integer) =
+    API.LLVMOffsetOfElement(dl, typ, element)
diff --git a/src/irbuilder.jl b/src/irbuilder.jl
@@ -523,14 +523,15 @@ not!(builder::IRBuilder, V::Value, Name::String="") =
 
 # re-implementation for flexibility (exposing addrspace, add_null)
 function globalstring!(mod::LLVM.Module, str::String, name::String="";
-                       addrspace::Integer=0, add_null::Bool=true)
+                       addrspace::Union{Integer,Nothing}=nothing, add_null::Bool=true)
     bytes = Vector{UInt8}(str)
     if add_null
         push!(bytes, 0x00)
     end
     constant = ConstantDataArray(bytes)
 
-    gv = GlobalVariable(mod, value_type(constant), name, addrspace)
+    gv = GlobalVariable(mod, value_type(constant), name,
+                        something(addrspace, globals_addrspace(datalayout(mod))))
     alignment!(gv, 1)
     unnamed_addr!(gv, true)
     initializer!(gv, constant)
diff --git a/test/datalayout_tests.jl b/test/datalayout_tests.jl
@@ -3,39 +3,44 @@
 dlstr = "E-p:32:32-f128:128:128"
 
 let
-    data = DataLayout(dlstr)
-    dispose(data)
+    dl = DataLayout(dlstr)
+    dispose(dl)
 end
 
-DataLayout(dlstr) do data
+DataLayout(dlstr) do dl
 end
 
-@dispose ctx=Context() data=DataLayout(dlstr) begin
-    @test string(data) == dlstr
+@dispose ctx=Context() dl=DataLayout(dlstr) begin
+    @test string(dl) == dlstr
 
-    @test occursin(dlstr, sprint(io->show(io,data)))
+    @test occursin(dlstr, sprint(io->show(io,dl)))
 
-    @test byteorder(data) == LLVM.API.LLVMBigEndian
-    @test pointersize(data) == pointersize(data, 0) == 4
+    @test byteorder(dl) == LLVM.API.LLVMBigEndian
+    @test pointersize(dl) == pointersize(dl, 0) == 4
 
-    @test intptr(data) == intptr(data, 0) == LLVM.Int32Type()
+    @test intptr(dl) == intptr(dl, 0) == LLVM.Int32Type()
 
-    @test sizeof(data, LLVM.Int32Type()) == storage_size(data, LLVM.Int32Type()) == abi_size(data, LLVM.Int32Type()) == 4
+    @test sizeof(dl, LLVM.Int32Type()) == storage_size(dl, LLVM.Int32Type()) == abi_size(dl, LLVM.Int32Type()) == 4
 
-    @test abi_alignment(data, LLVM.Int32Type()) == frame_alignment(data, LLVM.Int32Type()) == preferred_alignment(data, LLVM.Int32Type()) == 4
+    @test abi_alignment(dl, LLVM.Int32Type()) == frame_alignment(dl, LLVM.Int32Type()) == preferred_alignment(dl, LLVM.Int32Type()) == 4
 
     @dispose mod=LLVM.Module("SomeModule") begin
         gv = GlobalVariable(mod, LLVM.Int32Type(), "SomeGlobal")
-        @test preferred_alignment(data, gv) == 4
+        @test preferred_alignment(dl, gv) == 4
 
-        datalayout!(mod, data)
-        @test string(datalayout(mod)) == string(data)
+        datalayout!(mod, dl)
+        @test string(datalayout(mod)) == string(dl)
     end
 
     elem = [LLVM.Int32Type(), LLVM.FloatType()]
     let st = LLVM.StructType(elem)
-        @test element_at(data, st, 4) == 1
-        @test offsetof(data, st, 1) == 4
+        @test element_at(dl, st, 4) == 1
+        @test offsetof(dl, st, 1) == 4
+    end
+
+    @test globals_addrspace(dl) == 0
+    @dispose dl2=DataLayout(dlstr*"-G1") begin
+        @test globals_addrspace(dl2) == 1
     end
 end
 
