From 192b479f18ed1ee8e6f41de56baf22b35d7a5d8b Mon Sep 17 00:00:00 2001
From: xushiwei <x@goplus.org>
Date: Thu, 2 May 2024 23:14:12 +0800
Subject: [PATCH] cl: link go name

---
 cl/_testrt/linkname/in.go     | 15 ++++++++++++++
 cl/_testrt/linkname/out.ll    | 38 +++++++++++++++++++++++++++++++++++
 cl/internal/linktarget/foo.go |  9 +++++++++
 cl/internal/linktarget/out.ll | 26 ++++++++++++++++++++++++
 4 files changed, 88 insertions(+)
 create mode 100644 cl/_testrt/linkname/in.go
 create mode 100644 cl/_testrt/linkname/out.ll
 create mode 100644 cl/internal/linktarget/foo.go
 create mode 100644 cl/internal/linktarget/out.ll

diff --git a/cl/_testrt/linkname/in.go b/cl/_testrt/linkname/in.go
new file mode 100644
index 00000000..8e38e101
--- /dev/null
+++ b/cl/_testrt/linkname/in.go
@@ -0,0 +1,15 @@
+package main
+
+import (
+	_ "unsafe"
+
+	"github.com/goplus/llgo/internal/runtime/c"
+)
+
+//go:linkname print github.com/goplus/llgo/cl/internal/linktarget.F
+func print(a, b, c, d *c.Char)
+
+func main() {
+	print(c.Str("a"), c.Str("b"), c.Str("c"), c.Str("d"))
+	print(c.Str("1"), c.Str("2"), c.Str("3"), c.Str("4"))
+}
diff --git a/cl/_testrt/linkname/out.ll b/cl/_testrt/linkname/out.ll
new file mode 100644
index 00000000..4cc36046
--- /dev/null
+++ b/cl/_testrt/linkname/out.ll
@@ -0,0 +1,38 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@"main.init$guard" = global ptr null
+@0 = private unnamed_addr constant [2 x i8] c"a\00", align 1
+@1 = private unnamed_addr constant [2 x i8] c"b\00", align 1
+@2 = private unnamed_addr constant [2 x i8] c"c\00", align 1
+@3 = private unnamed_addr constant [2 x i8] c"d\00", align 1
+@4 = private unnamed_addr constant [2 x i8] c"1\00", align 1
+@5 = private unnamed_addr constant [2 x i8] c"2\00", align 1
+@6 = private unnamed_addr constant [2 x i8] c"3\00", align 1
+@7 = private unnamed_addr constant [2 x i8] c"4\00", align 1
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define void @main() {
+_llgo_0:
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  call void @"github.com/goplus/llgo/cl/internal/linktarget.F"(ptr @0, ptr @1, ptr @2, ptr @3)
+  call void @"github.com/goplus/llgo/cl/internal/linktarget.F"(ptr @4, ptr @5, ptr @6, ptr @7)
+  ret void
+}
+
+declare void @"github.com/goplus/llgo/cl/internal/linktarget.F"(ptr, ptr, ptr, ptr)
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
diff --git a/cl/internal/linktarget/foo.go b/cl/internal/linktarget/foo.go
new file mode 100644
index 00000000..b9f5abc3
--- /dev/null
+++ b/cl/internal/linktarget/foo.go
@@ -0,0 +1,9 @@
+package linktarget
+
+import (
+	"github.com/goplus/llgo/internal/runtime/c"
+)
+
+func F(a, b *c.Char) {
+	c.Printf(c.Str("a: %s, b: %s\n"), a, b)
+}
diff --git a/cl/internal/linktarget/out.ll b/cl/internal/linktarget/out.ll
new file mode 100644
index 00000000..02f75a17
--- /dev/null
+++ b/cl/internal/linktarget/out.ll
@@ -0,0 +1,26 @@
+; ModuleID = 'github.com/goplus/llgo/cl/internal/linktarget'
+source_filename = "github.com/goplus/llgo/cl/internal/linktarget"
+
+@"github.com/goplus/llgo/cl/internal/linktarget.init$guard" = global ptr null
+@0 = private unnamed_addr constant [14 x i8] c"a: %s, b: %s\0A\00", align 1
+
+define void @"github.com/goplus/llgo/cl/internal/linktarget.F"(ptr %0, ptr %1) {
+_llgo_0:
+  %2 = call i32 (ptr, ...) @printf(ptr @0, ptr %0, ptr %1)
+  ret void
+}
+
+define void @"github.com/goplus/llgo/cl/internal/linktarget.init"() {
+_llgo_0:
+  %0 = load i1, ptr @"github.com/goplus/llgo/cl/internal/linktarget.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"github.com/goplus/llgo/cl/internal/linktarget.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+declare i32 @printf(ptr, ...)