cl/instr:replace register & build constraints

cl/_testrt/asmfull/in.go

@@ -0,0 +1,17 @@
+package main
+
+import _ "unsafe"
+
+//go:linkname asm llgo.asm
+func asm(instruction string)
+
+//go:linkname asmFull llgo.asm
+func asmFull(instruction string, regs map[string]any) uintptr
+
+func main() {
+	asm("nop")
+	result := asmFull("mov {}, {value}", map[string]any{
+		"value": uint32(42),
+	})
+	_ = result
+}