From a61ac9ecbf42a97a4f56f7384e5b862dcb169f4a Mon Sep 17 00:00:00 2001 From: Jakub Konka Date: Mon, 28 Feb 2022 12:14:41 +0100 Subject: x64: fix store with ABI size > 8 on stack; pass union tests --- src/arch/x86_64/CodeGen.zig | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'src') diff --git a/src/arch/x86_64/CodeGen.zig b/src/arch/x86_64/CodeGen.zig index 6891df0a41..bf5ebf4d41 100644 --- a/src/arch/x86_64/CodeGen.zig +++ b/src/arch/x86_64/CodeGen.zig @@ -2484,8 +2484,15 @@ fn store(self: *Self, ptr: MCValue, value: MCValue, ptr_ty: Type, value_ty: Type }); }, .stack_offset => { - const tmp_reg = try self.copyToTmpRegister(value_ty, value); - return self.store(ptr, .{ .register = tmp_reg }, ptr_ty, value_ty); + if (abi_size <= 8) { + const tmp_reg = try self.copyToTmpRegister(value_ty, value); + return self.store(ptr, .{ .register = tmp_reg }, ptr_ty, value_ty); + } + + try self.genInlineMemcpy(0, value_ty, value, .{ + .source_stack_base = .rbp, + .dest_stack_base = reg.to64(), + }); }, else => |other| { return self.fail("TODO implement set pointee with {}", .{other}); -- cgit v1.2.3