atomic, atomicCmpXchg

cl/_testlibc/atomic/in.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/sync"
+)
+
+func main() {
+	var v int64 = 100
+	sync.FetchAndAdd(&v, 1)
+	c.Printf(c.Str("%ld\n"), v)
+
+	sync.CompareAndXchg(&v, 100, 102)
+	c.Printf(c.Str("%ld\n"), v)
+
+	sync.CompareAndXchg(&v, 101, 102)
+	c.Printf(c.Str("%ld\n"), v)
+}

cl/_testlibc/atomic/out.ll

@@ -0,0 +1,48 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@0 = private unnamed_addr constant [5 x i8] c"%ld\0A\00", align 1
+@1 = private unnamed_addr constant [5 x i8] c"%ld\0A\00", align 1
+@2 = private unnamed_addr constant [5 x i8] c"%ld\0A\00", align 1
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$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 i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = call ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64 8)
+  store i64 100, ptr %2, align 4
+  %3 = atomicrmw add ptr %2, i64 1 seq_cst, align 8
+  %4 = load i64, ptr %2, align 4
+  %5 = call i32 (ptr, ...) @printf(ptr @0, i64 %4)
+  %6 = cmpxchg ptr %2, i64 100, i64 102 seq_cst seq_cst, align 8
+  %7 = load i64, ptr %2, align 4
+  %8 = call i32 (ptr, ...) @printf(ptr @1, i64 %7)
+  %9 = cmpxchg ptr %2, i64 101, i64 102 seq_cst seq_cst, align 8
+  %10 = load i64, ptr %2, align 4
+  %11 = call i32 (ptr, ...) @printf(ptr @2, i64 %10)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare ptr @"github.com/goplus/llgo/internal/runtime.AllocZ"(i64)
+
+declare i32 @printf(ptr, ...)

cl/_testlibc/setjmp/in.go

@@ -8,8 +8,8 @@ func main() {
 	jb := c.AllocaSigjmpBuf()
 	switch ret := c.Sigsetjmp(jb, 0); ret {
 	case 0:
-		cstr := c.Str("?Hello, setjmp!\n")
-		c.Fprintf(c.Stderr, c.Advance(cstr, 1))
+		cstr := c.Str("??Hello, setjmp!\n")
+		c.Fprintf(c.Stderr, c.Str("%s"), c.Advance(c.Pointer(c.Advance(cstr, 1)), 1))
 		c.Siglongjmp(jb, 1)
 	default:
 		println("exception:", ret)