re PR target/60104 (load not folded into indirect branch on x86-64)

	PR target/60104
	* config/i386/i386.c (x86_output_mi_thunk): Add memory case
	for sibling-tail-calls.
	* config/i386/i386.md (sibcall_insn_operand): Add memory-constrain
	to its use.
	* config/i386/predicates.md (sibcall_memory_operand): New predicate.
	(sibcall_insn_operand): Add check for sibcall_memory_operand.

	PR target/60104
	* gcc.target/i386/sibcall-1.c: New test.
	* gcc.target/i386/sibcall-2.c: New test.
	* gcc.target/i386/sibcall-3.c: New test.
	* gcc.target/i386/sibcall-4.c: New test.

From-SVN: r211089

3 files changed, 23 insertions, 6 deletions

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 83d3ba3..f48adfd 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -38893,7 +38893,16 @@ x86_output_mi_thunk (FILE *file,
      For our purposes here, we can get away with (ab)using a jump pattern,
      because we're going to do no optimization.  */
   if (MEM_P (fnaddr))
-    emit_jump_insn (gen_indirect_jump (fnaddr));
+    {
+      if (sibcall_insn_operand (fnaddr, word_mode))
+	{
+	  tmp = gen_rtx_CALL (VOIDmode, fnaddr, const0_rtx);
+          tmp = emit_call_insn (tmp);
+          SIBLING_CALL_P (tmp) = 1;
+	}
+      else
+	emit_jump_insn (gen_indirect_jump (fnaddr));
+    }
   else
     {
       if (ix86_cmodel == CM_LARGE_PIC && SYMBOLIC_CONST (fnaddr))
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 44e80ec..8d363bd 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -11376,7 +11376,7 @@
   [(set_attr "type" "call")])
 
 (define_insn "*sibcall"
-  [(call (mem:QI (match_operand:W 0 "sibcall_insn_operand" "Uz"))
+  [(call (mem:QI (match_operand:W 0 "sibcall_insn_operand" "Uzm"))
 	 (match_operand 1))]
   "SIBLING_CALL_P (insn)"
   "* return ix86_output_call_insn (insn, operands[0]);"
@@ -11406,7 +11406,7 @@
   [(set_attr "type" "call")])
 
 (define_insn "*sibcall_pop"
-  [(call (mem:QI (match_operand:SI 0 "sibcall_insn_operand" "Uz"))
+  [(call (mem:QI (match_operand:SI 0 "sibcall_insn_operand" "Uzm"))
 	 (match_operand 1))
    (set (reg:SI SP_REG)
 	(plus:SI (reg:SI SP_REG)
@@ -11451,7 +11451,7 @@
 
 (define_insn "*sibcall_value"
   [(set (match_operand 0)
-	(call (mem:QI (match_operand:W 1 "sibcall_insn_operand" "Uz"))
+	(call (mem:QI (match_operand:W 1 "sibcall_insn_operand" "Uzm"))
 	      (match_operand 2)))]
   "SIBLING_CALL_P (insn)"
   "* return ix86_output_call_insn (insn, operands[1]);"
@@ -11494,7 +11494,7 @@
 
 (define_insn "*sibcall_value_pop"
   [(set (match_operand 0)
-	(call (mem:QI (match_operand:SI 1 "sibcall_insn_operand" "Uz"))
+	(call (mem:QI (match_operand:SI 1 "sibcall_insn_operand" "Uzm"))
 	      (match_operand 2)))
    (set (reg:SI SP_REG)
 	(plus:SI (reg:SI SP_REG)
diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md
index 2ef1384..efc3a09 100644
--- a/gcc/config/i386/predicates.md
+++ b/gcc/config/i386/predicates.md
@@ -71,6 +71,12 @@
   return ANY_QI_REG_P (op);
 })
 
+(define_predicate "sibcall_memory_operand"
+  (match_operand 0 "memory_operand")
+{
+  return CONSTANT_P (XEXP (op, 0));
+})
+
 ;; Match an SI or HImode register for a zero_extract.
 (define_special_predicate "ext_register_operand"
   (match_operand 0 "register_operand")
@@ -600,7 +606,9 @@
 (define_special_predicate "sibcall_insn_operand"
   (ior (match_test "constant_call_address_operand
 		     (op, mode == VOIDmode ? mode : Pmode)")
-       (match_operand 0 "register_no_elim_operand")))
+       (match_operand 0 "register_no_elim_operand")
+       (and (not (match_test "TARGET_X32"))
+	    (match_operand 0 "sibcall_memory_operand"))))
 
 ;; Return true if OP is a call from MS ABI to SYSV ABI function.
 (define_predicate "call_rex64_ms_sysv_operation"