Remove unused TMP4. Use intra-precedure call scratch registers for TMP2 and TMP3.

Author: dstogov

ext/opcache/jit/zend_jit_arm64.dasc

@@ -69,21 +69,18 @@
 |.define ZREG_FPR1,   ZREG_V1
 
 // Temporaries, not preserved across calls
-|.define TMP1,    x11
-|.define TMP1w,   w11
-|.define TMP2,    x12
-|.define TMP2w,   w12
-|.define TMP3,    x13
-|.define TMP3w,   w13
-|.define TMP4,    x14
-|.define TMP4w,   w14
+|.define TMP1,    x15
+|.define TMP1w,   w15
+|.define TMP2,    x16
+|.define TMP2w,   w16
+|.define TMP3,    x17
+|.define TMP3w,   w17
 |.define FPTMP,   v16
 |.define FPTMPd,  d16
 
-|.define ZREG_TMP1,   ZREG_X11
-|.define ZREG_TMP2,   ZREG_X12
-|.define ZREG_TMP3,   ZREG_X13
-|.define ZREG_TMP4,   ZREG_X14
+|.define ZREG_TMP1,   ZREG_X15
+|.define ZREG_TMP2,   ZREG_X16
+|.define ZREG_TMP3,   ZREG_X17
 |.define ZREG_FPTMP,  ZREG_V16
 
 |.define HYBRID_SPAD, #32     // padding for stack alignment

ext/opcache/jit/zend_jit_arm64.h

@@ -125,10 +125,9 @@ typedef struct _zend_jit_registers_buf {
 #define ZREG_FPR0  ZREG_V0
 #define ZREG_FPR1  ZREG_V1
 
-#define ZREG_TMP1  ZREG_X11
-#define ZREG_TMP2  ZREG_X12
-#define ZREG_TMP3  ZREG_X13
-#define ZREG_TMP4  ZREG_X14
+#define ZREG_TMP1  ZREG_X15
+#define ZREG_TMP2  ZREG_X16
+#define ZREG_TMP3  ZREG_X17
 #define ZREG_FPTMP ZREG_V16
 
 #define ZREG_COPY      ZREG_REG0
@@ -141,7 +140,7 @@ typedef uint64_t zend_regset;
 # define ZEND_REGSET_FIXED \
 	(ZEND_REGSET(ZREG_RSP) | ZEND_REGSET(ZREG_RLR) | ZEND_REGSET(ZREG_RFP) | \
 	ZEND_REGSET(ZREG_RPR) | ZEND_REGSET(ZREG_FP) | ZEND_REGSET(ZREG_IP) | \
-	ZEND_REGSET_INTERVAL(ZREG_TMP1, ZREG_TMP4) | ZEND_REGSET(ZREG_FPTMP))
+	ZEND_REGSET_INTERVAL(ZREG_TMP1, ZREG_TMP3) | ZEND_REGSET(ZREG_FPTMP))
 # define ZEND_REGSET_GP \
 	ZEND_REGSET_DIFFERENCE(ZEND_REGSET_INTERVAL(ZREG_X0, ZREG_X30), ZEND_REGSET_FIXED)
 # define ZEND_REGSET_FP \