new x86 backend

build.c

@@ -59,9 +59,13 @@ struct CompileData target_x86_files[] = {
     DIR("build"),
 
     DIR("build/cg"),
+
     DIR("build/cg/x86"),
     SP(CT_C, "cg/x86/prep.c"),
     SP(CT_C, "cg/x86/constraints.c"),
+
+    DIR("build/cg/x86_stupid"),
+    SP(CT_C, "cg/x86_stupid/cg.c"),
 };
 
 enum CompileResult target_x86() {

build.sh

@@ -3,7 +3,7 @@ set -e
 : ${CFLAGS:="-Wall -Wextra -Wno-unused -Wpedantic -Werror -std=c11"}
 : ${CC:="clang"}
 
-FILES="main.c ir/*.c common/*.c ir/opt/*.c ir/transform/*.c cg/x86/*.c"
+FILES="test.c ir/*.c common/*.c ir/opt/*.c ir/transform/*.c cg/x86/*.c cg/x86_stupid/*.c"
 
 # shellcheck disable=SC2086
 
@@ -22,6 +22,7 @@ else
   clang build.c -o build.exe
   ./build.exe lib.a 
   ./build.exe x86.a 
+  ./build.exe tests
 fi
 
 # shellcheck enable=SC2086

cg/cg.h

@@ -4,6 +4,11 @@
 #include <stddef.h>
 #include <stdlib.h>
 
+#ifndef VX_BASE_TYPES
+#define VX_BASE_TYPES
+typedef size_t vx_IrVar;
+#endif
+
 typedef struct vx_OpInfo_X86CG_s * vx_OpInfo_X86CG;
 
 typedef enum {
@@ -15,7 +20,7 @@ typedef struct {
     vx_OpInfoKind kind;
     union {
         vx_OpInfo_X86CG x86;
-    } value;
+} value;
 } vx_OpInfo;
 
 typedef struct {
@@ -55,4 +60,18 @@ static void * vx_OpInfo_lookup__impl(vx_OpInfoList list, vx_OpInfoKind kind) {
 // example usage:  vx_OpInfo_lookup(list, X86CG)
 #define vx_OpInfo_lookup(list, kind) ((vx_OpInfo_##kind *) vx_OpInfo_lookup__impl(list, VX_OPINFO_##kind))
 
+typedef size_t vx_CgReg;
+#define VX_CGREG_NONE ((vx_CgReg) 0)
+
+typedef struct {
+    vx_CgReg (*allocRegFor)(struct vx_IrBlock_s *root, vx_IrVar var);
+    vx_CgReg (*allocArgReg)(struct vx_IrBlock_s *root, size_t id);
+    vx_CgReg (*allocRetReg)(struct vx_IrBlock_s *root, size_t id);
+    void     (*freeRe)(vx_CgReg);
+
+    union {
+        struct vx_X86CgState * x86;
+    };
+} vx_CgState;
+
 #endif

cg/x86/x86.h

@@ -14,3 +14,7 @@ void vx_x86cg_regconstraints(vx_IrBlock * block);
 static struct vx_OpInfo_X86CG_s* vx_x86cg_make_opinfo(void) {
     return (struct vx_OpInfo_X86CG_s*) fastalloc(sizeof(struct vx_OpInfo_X86CG_s));
 }
+
+struct X86CgState {
+
+};