LLVM backend: loongarch64 support

2 files changed, 24 insertions, 3 deletions

diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index 9e51417ab6..77b9d74fdc 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -426,7 +426,9 @@ const DataLayoutBuilder = struct {
             };
             if (self.target.cpu.arch == .aarch64_32) continue;
             if (!info.force_in_data_layout and matches_default and
-                self.target.cpu.arch != .riscv64 and !(self.target.cpu.arch == .aarch64 and
+                self.target.cpu.arch != .riscv64 and
+                self.target.cpu.arch != .loongarch64 and
+                !(self.target.cpu.arch == .aarch64 and
                 (self.target.os.tag == .uefi or self.target.os.tag == .windows)) and
                 self.target.cpu.arch != .bpfeb and self.target.cpu.arch != .bpfel) continue;
             try writer.writeAll("-p");
@@ -535,6 +537,7 @@ const DataLayoutBuilder = struct {
             .nvptx64,
             => &.{ 16, 32, 64 },
             .x86_64 => &.{ 8, 16, 32, 64 },
+            .loongarch64 => &.{64},
             else => &.{},
         }), 0..) |natural, index| switch (index) {
             0 => try writer.print("-n{d}", .{natural}),
@@ -686,6 +689,14 @@ const DataLayoutBuilder = struct {
                         },
                         else => {},
                     },
+                    .loongarch64 => switch (size) {
+                        128 => {
+                            abi = size;
+                            pref = size;
+                            force_abi = true;
+                        },
+                        else => {},
+                    },
                     else => {},
                 }
             },
@@ -12039,6 +12050,13 @@ pub fn initializeLLVMTarget(arch: std.Target.Cpu.Arch) void {
                 // There is no LLVMInitializeARCAsmParser function.
             }
         },
+        .loongarch32, .loongarch64 => {
+            llvm.LLVMInitializeLoongArchTarget();
+            llvm.LLVMInitializeLoongArchTargetInfo();
+            llvm.LLVMInitializeLoongArchTargetMC();
+            llvm.LLVMInitializeLoongArchAsmPrinter();
+            llvm.LLVMInitializeLoongArchAsmParser();
+        },
 
         // LLVM backends that have no initialization functions.
         .tce,
@@ -12060,8 +12078,6 @@ pub fn initializeLLVMTarget(arch: std.Target.Cpu.Arch) void {
         .renderscript32,
         .renderscript64,
         .dxil,
-        .loongarch32,
-        .loongarch64,
         => {},
 
         .spu_2 => unreachable, // LLVM does not support this backend
diff --git a/src/codegen/llvm/bindings.zig b/src/codegen/llvm/bindings.zig
index 99a3de043e..a32f1d74bc 100644
--- a/src/codegen/llvm/bindings.zig
+++ b/src/codegen/llvm/bindings.zig
@@ -177,6 +177,7 @@ pub extern fn LLVMInitializeM68kTargetInfo() void;
 pub extern fn LLVMInitializeCSKYTargetInfo() void;
 pub extern fn LLVMInitializeVETargetInfo() void;
 pub extern fn LLVMInitializeARCTargetInfo() void;
+pub extern fn LLVMInitializeLoongArchTargetInfo() void;
 
 pub extern fn LLVMInitializeAArch64Target() void;
 pub extern fn LLVMInitializeAMDGPUTarget() void;
@@ -200,6 +201,7 @@ pub extern fn LLVMInitializeM68kTarget() void;
 pub extern fn LLVMInitializeVETarget() void;
 pub extern fn LLVMInitializeCSKYTarget() void;
 pub extern fn LLVMInitializeARCTarget() void;
+pub extern fn LLVMInitializeLoongArchTarget() void;
 
 pub extern fn LLVMInitializeAArch64TargetMC() void;
 pub extern fn LLVMInitializeAMDGPUTargetMC() void;
@@ -223,6 +225,7 @@ pub extern fn LLVMInitializeM68kTargetMC() void;
 pub extern fn LLVMInitializeCSKYTargetMC() void;
 pub extern fn LLVMInitializeVETargetMC() void;
 pub extern fn LLVMInitializeARCTargetMC() void;
+pub extern fn LLVMInitializeLoongArchTargetMC() void;
 
 pub extern fn LLVMInitializeAArch64AsmPrinter() void;
 pub extern fn LLVMInitializeAMDGPUAsmPrinter() void;
@@ -244,6 +247,7 @@ pub extern fn LLVMInitializeXCoreAsmPrinter() void;
 pub extern fn LLVMInitializeM68kAsmPrinter() void;
 pub extern fn LLVMInitializeVEAsmPrinter() void;
 pub extern fn LLVMInitializeARCAsmPrinter() void;
+pub extern fn LLVMInitializeLoongArchAsmPrinter() void;
 
 pub extern fn LLVMInitializeAArch64AsmParser() void;
 pub extern fn LLVMInitializeAMDGPUAsmParser() void;
@@ -264,6 +268,7 @@ pub extern fn LLVMInitializeXtensaAsmParser() void;
 pub extern fn LLVMInitializeM68kAsmParser() void;
 pub extern fn LLVMInitializeCSKYAsmParser() void;
 pub extern fn LLVMInitializeVEAsmParser() void;
+pub extern fn LLVMInitializeLoongArchAsmParser() void;
 
 extern fn ZigLLDLinkCOFF(argc: c_int, argv: [*:null]const ?[*:0]const u8, can_exit_early: bool, disable_output: bool) bool;
 extern fn ZigLLDLinkELF(argc: c_int, argv: [*:null]const ?[*:0]const u8, can_exit_early: bool, disable_output: bool) bool;