Don't check ix86_indirect_branch_register for GOT operand

Since GOT_memory_operand and GOT32_symbol_operand are simple pattern
matches, don't check ix86_indirect_branch_register here.  If needed,
-mindirect-branch= will convert indirect branch via GOT slot to a call
and return thunk.

	* config/i386/constraints.md (Bs): Update
	ix86_indirect_branch_register check.  Don't check
	ix86_indirect_branch_register with GOT_memory_operand.
	(Bw): Likewise.
	* config/i386/predicates.md (GOT_memory_operand): Don't check
	ix86_indirect_branch_register here.
	(GOT32_symbol_operand): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@256714 138bc75d-0d04-0410-961f-82ee72b054a4

Author: hjl

gcc/ChangeLog

@@ -1,3 +1,13 @@
+2018-01-15  H.J. Lu  <[email protected]>
+
+	* config/i386/constraints.md (Bs): Update
+	ix86_indirect_branch_register check.  Don't check
+	ix86_indirect_branch_register with GOT_memory_operand.
+	(Bw): Likewise.
+	* config/i386/predicates.md (GOT_memory_operand): Don't check
+	ix86_indirect_branch_register here.
+	(GOT32_symbol_operand): Likewise.
+
 2018-01-15  H.J. Lu  <[email protected]>
 
 	* config/i386/predicates.md (constant_call_address_operand):

gcc/config/i386/constraints.md

@@ -225,20 +225,18 @@
 
 (define_constraint "Bs"
   "@internal Sibcall memory operand."
-  (ior (and (not (match_test "TARGET_X32
-			      || ix86_indirect_branch_register"))
+  (ior (and (not (match_test "ix86_indirect_branch_register"))
+	    (not (match_test "TARGET_X32"))
 	    (match_operand 0 "sibcall_memory_operand"))
-       (and (match_test "TARGET_X32 && Pmode == DImode
-			 && !ix86_indirect_branch_register")
+       (and (match_test "TARGET_X32 && Pmode == DImode")
 	    (match_operand 0 "GOT_memory_operand"))))
 
 (define_constraint "Bw"
   "@internal Call memory operand."
-  (ior (and (not (match_test "TARGET_X32
-			      || ix86_indirect_branch_register"))
+  (ior (and (not (match_test "ix86_indirect_branch_register"))
+	    (not (match_test "TARGET_X32"))
 	    (match_operand 0 "memory_operand"))
-       (and (match_test "TARGET_X32 && Pmode == DImode
-			 && !ix86_indirect_branch_register")
+       (and (match_test "TARGET_X32 && Pmode == DImode")
 	    (match_operand 0 "GOT_memory_operand"))))
 
 (define_constraint "Bz"

gcc/config/i386/predicates.md

@@ -695,8 +695,7 @@
 
 ;; Return true if OP is a GOT memory operand.
 (define_predicate "GOT_memory_operand"
-  (and (match_test "!ix86_indirect_branch_register")
-       (match_operand 0 "memory_operand"))
+  (match_operand 0 "memory_operand")
 {
   op = XEXP (op, 0);
   return (GET_CODE (op) == CONST
@@ -729,8 +728,7 @@
 
 ;; Return true if OP is a 32-bit GOT symbol operand.
 (define_predicate "GOT32_symbol_operand"
-  (match_test "!ix86_indirect_branch_register
-	       && GET_CODE (op) == CONST
+  (match_test "GET_CODE (op) == CONST
                && GET_CODE (XEXP (op, 0)) == UNSPEC
                && XINT (XEXP (op, 0), 1) == UNSPEC_GOT"))