diff --git a/tcg/aarch64/tcg-target.inc.c b/tcg/aarch64/tcg-target.inc.c
index f5f0ce3..a8fb442 100644
--- a/tcg/aarch64/tcg-target.inc.c
+++ b/tcg/aarch64/tcg-target.inc.c
@@ -18,14 +18,14 @@
    makes things much cleaner.  */
 QEMU_BUILD_BUG_ON(TCG_TYPE_I32 != 0 || TCG_TYPE_I64 != 1);
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
     "%x0", "%x1", "%x2", "%x3", "%x4", "%x5", "%x6", "%x7",
     "%x8", "%x9", "%x10", "%x11", "%x12", "%x13", "%x14", "%x15",
     "%x16", "%x17", "%x18", "%x19", "%x20", "%x21", "%x22", "%x23",
     "%x24", "%x25", "%x26", "%x27", "%x28", "%fp", "%x30", "%sp",
 };
-#endif /* NDEBUG */
+#endif /* CONFIG_DEBUG_TCG */
 
 static const int tcg_target_reg_alloc_order[] = {
     TCG_REG_X20, TCG_REG_X21, TCG_REG_X22, TCG_REG_X23,
diff --git a/tcg/arm/tcg-target.inc.c b/tcg/arm/tcg-target.inc.c
index 9995b74..2b7fbdd 100644
--- a/tcg/arm/tcg-target.inc.c
+++ b/tcg/arm/tcg-target.inc.c
@@ -67,7 +67,7 @@
 # define USING_SOFTMMU 0
 #endif
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
     "%r0",
     "%r1",
diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c
index 65f0d4c..007407c 100644
--- a/tcg/i386/tcg-target.inc.c
+++ b/tcg/i386/tcg-target.inc.c
@@ -24,7 +24,7 @@
 
 #include "tcg-be-ldst.h"
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
 #if TCG_TARGET_REG_BITS == 64
     "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
diff --git a/tcg/ia64/tcg-target.inc.c b/tcg/ia64/tcg-target.inc.c
index 5233da1..7557e6a 100644
--- a/tcg/ia64/tcg-target.inc.c
+++ b/tcg/ia64/tcg-target.inc.c
@@ -27,7 +27,7 @@
  * Register definitions
  */
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
      "r0",  "r1",  "r2",  "r3",  "r4",  "r5",  "r6",  "r7",
      "r8",  "r9", "r10", "r11", "r12", "r13", "r14", "r15",
diff --git a/tcg/mips/tcg-target.inc.c b/tcg/mips/tcg-target.inc.c
index f7194b6..aaf881c 100644
--- a/tcg/mips/tcg-target.inc.c
+++ b/tcg/mips/tcg-target.inc.c
@@ -35,7 +35,7 @@
 #define LO_OFF    (MIPS_BE * 4)
 #define HI_OFF    (4 - LO_OFF)
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
     "zero",
     "at",
diff --git a/tcg/ppc/tcg-target.inc.c b/tcg/ppc/tcg-target.inc.c
index 60bcaa7..00bb90f 100644
--- a/tcg/ppc/tcg-target.inc.c
+++ b/tcg/ppc/tcg-target.inc.c
@@ -89,7 +89,7 @@
 #define TCG_GUEST_BASE_REG 30
 #endif
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
     "r0",
     "r1",
diff --git a/tcg/s390/tcg-target.inc.c b/tcg/s390/tcg-target.inc.c
index 8b30256..5805532 100644
--- a/tcg/s390/tcg-target.inc.c
+++ b/tcg/s390/tcg-target.inc.c
@@ -221,7 +221,7 @@
     RX_STH      = 0x40,
 } S390Opcode;
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
     "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7",
     "%r8", "%r9", "%r10" "%r11" "%r12" "%r13" "%r14" "%r15"
diff --git a/tcg/sparc/tcg-target.inc.c b/tcg/sparc/tcg-target.inc.c
index d64daba..d641cfd 100644
--- a/tcg/sparc/tcg-target.inc.c
+++ b/tcg/sparc/tcg-target.inc.c
@@ -24,7 +24,7 @@
 
 #include "tcg-be-null.h"
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
     "%g0",
     "%g1",
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 525d5c8..796addd 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -31,11 +31,6 @@
 /* Define to jump the ELF file used to communicate with GDB.  */
 #undef DEBUG_JIT
 
-#if !defined(CONFIG_DEBUG_TCG) && !defined(NDEBUG)
-/* define it to suppress various consistency checks (faster) */
-#define NDEBUG
-#endif
-
 #include "qemu/cutils.h"
 #include "qemu/host-utils.h"
 #include "qemu/timer.h"
@@ -1586,7 +1581,7 @@
 }
 #endif
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static void dump_regs(TCGContext *s)
 {
     TCGTemp *ts;
@@ -2454,7 +2449,7 @@
             tcg_reg_alloc_op(s, def, opc, args, dead_args, sync_args);
             break;
         }
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
         check_regs(s);
 #endif
         /* Test for (pending) buffer overflow.  The assumption is that any
diff --git a/tcg/tci/tcg-target.inc.c b/tcg/tci/tcg-target.inc.c
index 6855ed2..e2fc52a 100644
--- a/tcg/tci/tcg-target.inc.c
+++ b/tcg/tci/tcg-target.inc.c
@@ -315,7 +315,7 @@
 #endif
 };
 
-#ifndef NDEBUG
+#ifdef CONFIG_DEBUG_TCG
 static const char *const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
     "r00",
     "r01",