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| author | Andrew Kelley <andrew@ziglang.org> | 2022-07-14 19:30:56 -0700 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2022-07-14 22:26:11 -0700 |
| commit | 070e3ea37dd51c2a2080941a056c455f70232148 (patch) | |
| tree | 9c04d0ad2849ab14550603f19ab49118dbf3bc47 /src | |
| parent | 4c7fe74b2c0e8279d0003f820a18d59e1237b74a (diff) | |
| download | zig-070e3ea37dd51c2a2080941a056c455f70232148.tar.gz zig-070e3ea37dd51c2a2080941a056c455f70232148.zip | |
LLVM: insert debug logging when LLVM ABI size is wrong
Diffstat (limited to 'src')
| -rw-r--r-- | src/codegen/llvm.zig | 18 | ||||
| -rw-r--r-- | src/codegen/llvm/bindings.zig | 6 |
2 files changed, 24 insertions, 0 deletions
diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig index fe35620d38..714ac16c54 100644 --- a/src/codegen/llvm.zig +++ b/src/codegen/llvm.zig @@ -2424,6 +2424,24 @@ pub const DeclGen = struct { } fn lowerType(dg: *DeclGen, t: Type) Allocator.Error!*const llvm.Type { + const llvm_ty = try lowerTypeInner(dg, t); + if (std.debug.runtime_safety) { + if (t.zigTypeTag() != .Opaque and t.hasRuntimeBits() and + !llvm_ty.isOpaqueStruct().toBool()) + { + const zig_size = t.abiSize(dg.module.getTarget()); + const llvm_size = dg.object.target_data.abiSizeOfType(llvm_ty); + if (llvm_size != zig_size) { + log.err("when lowering {}, Zig ABI size = {d} but LLVM ABI size = {d}", .{ + t.fmt(dg.module), zig_size, llvm_size, + }); + } + } + } + return llvm_ty; + } + + fn lowerTypeInner(dg: *DeclGen, t: Type) Allocator.Error!*const llvm.Type { const gpa = dg.gpa; const target = dg.module.getTarget(); switch (t.zigTypeTag()) { diff --git a/src/codegen/llvm/bindings.zig b/src/codegen/llvm/bindings.zig index 89905e4a29..3279f052b2 100644 --- a/src/codegen/llvm/bindings.zig +++ b/src/codegen/llvm/bindings.zig @@ -301,6 +301,9 @@ pub const Type = opaque { pub const countStructElementTypes = LLVMCountStructElementTypes; extern fn LLVMCountStructElementTypes(StructTy: *const Type) c_uint; + + pub const isOpaqueStruct = LLVMIsOpaqueStruct; + extern fn LLVMIsOpaqueStruct(StructTy: *const Type) Bool; }; pub const Module = opaque { @@ -1032,6 +1035,9 @@ pub const TargetData = opaque { pub const abiAlignmentOfType = LLVMABIAlignmentOfType; extern fn LLVMABIAlignmentOfType(TD: *const TargetData, Ty: *const Type) c_uint; + + pub const abiSizeOfType = LLVMABISizeOfType; + extern fn LLVMABISizeOfType(TD: *const TargetData, Ty: *const Type) c_ulonglong; }; pub const CodeModel = enum(c_int) { |