i386.h (ADDITIONAL_REGISTER_NAMES): Add sil, dil, bpl and spl aliases.

	* config/i386/i386.h (ADDITIONAL_REGISTER_NAMES): Add
	sil, dil, bpl and spl aliases.

From-SVN: r267456

gcc/ChangeLog

+2018-12-28  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386.h (ADDITIONAL_REGISTER_NAMES): Add
+	sil, dil, bpl and spl aliases.
+
 2018-12-28  Martin Sebor  <msebor@redhat.com>
 
 	* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Avoid
@@ -71,7 +76,7 @@
 	parametrs.
 
 2018-12-24  Jan Hubicka  <hubicka@ucw.cz>
-	
+
 	PR lto/88140
 	* tree.c (fld_simplified_type): Temporarily disable array
 	simplification.

gcc/config/i386/i386.h

@@ -2041,6 +2041,12 @@ do {							\
 
 #define REGISTER_NAMES HI_REGISTER_NAMES
 
+#define QI_REGISTER_NAMES \
+{"al", "dl", "cl", "bl", "sil", "dil", "bpl", "spl"}
+
+#define QI_HIGH_REGISTER_NAMES \
+{"ah", "dh", "ch", "bh"}
+
 /* Table of additional register names to use in user input.  */
 
 #define ADDITIONAL_REGISTER_NAMES						\
@@ -2050,6 +2056,7 @@ do {							\
   { "rax", AX_REG }, { "rdx", DX_REG }, { "rcx", CX_REG }, { "rbx", BX_REG },	\
   { "rsi", SI_REG }, { "rdi", DI_REG }, { "rbp", BP_REG }, { "rsp", SP_REG },	\
   { "al", AX_REG }, { "dl", DX_REG }, { "cl", CX_REG }, { "bl", BX_REG },	\
+  { "sil", SI_REG }, { "dil", DI_REG }, { "bpl", BP_REG }, { "spl", SP_REG },	\
   { "ah", AX_REG }, { "dh", DX_REG }, { "ch", CX_REG }, { "bh", BX_REG },	\
   { "ymm0", XMM0_REG }, { "ymm1", XMM1_REG }, { "ymm2", XMM2_REG }, { "ymm3", XMM3_REG }, \
   { "ymm4", XMM4_REG }, { "ymm5", XMM5_REG }, { "ymm6", XMM6_REG }, { "ymm7", XMM7_REG }, \
@@ -2069,20 +2076,6 @@ do {							\
   { "zmm28", XMM28_REG }, { "zmm29", XMM29_REG }, { "zmm30", XMM30_REG }, { "zmm31", XMM31_REG }  \
 }
 
-/* Note we are omitting these since currently I don't know how
-to get gcc to use these, since they want the same but different
-number as al, and ax.
-*/
-
-#define QI_REGISTER_NAMES \
-{"al", "dl", "cl", "bl", "sil", "dil", "bpl", "spl",}
-
-/* These parallel the array above, and can be used to access bits 8:15
-   of regs 0 through 3.  */
-
-#define QI_HIGH_REGISTER_NAMES \
-{"ah", "dh", "ch", "bh", }
-
 /* How to renumber registers for dbx and gdb.  */
 
 #define DBX_REGISTER_NUMBER(N) \