From 3d3153c58e9ab808c8b1899d3a9de9d1a1030a67 Mon Sep 17 00:00:00 2001
From: Jakub Konka <kubkon@jakubkonka.com>
Date: Sun, 12 Nov 2023 15:34:16 +0100
Subject: [PATCH] x86_64: use .rax for local exec as prescribed by the spec

---
 src/arch/x86_64/Lower.zig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/arch/x86_64/Lower.zig b/src/arch/x86_64/Lower.zig
index 085b2932af..b26cbe1503 100644
--- a/src/arch/x86_64/Lower.zig
+++ b/src/arch/x86_64/Lower.zig
@@ -389,14 +389,14 @@ fn emit(lower: *Lower, prefix: Prefix, mnemonic: Mnemonic, ops: []const Operand)
                             // Since we are linking statically, we emit LE model directly.
                             lower.result_insts[lower.result_insts_len] =
                                 try Instruction.new(.none, .mov, &[_]Operand{
-                                .{ .reg = ops[0].reg.to64() },
+                                .{ .reg = .rax },
                                 .{ .mem = Memory.sib(.qword, .{ .base = .{ .reg = .fs } }) },
                             });
                             lower.result_insts_len += 1;
                             _ = lower.reloc(.{ .linker_reloc = sym });
                             emit_mnemonic = .lea;
                             break :op .{ .mem = Memory.sib(mem_op.sib.ptr_size, .{
-                                .base = .{ .reg = ops[0].reg.to64() },
+                                .base = .{ .reg = .rax },
                                 .disp = std.math.minInt(i32),
                             }) };
                         }