From: Kazu Hirata <kazu@cs.umass.edu>
Date: Tue, 17 Sep 2002 19:02:58 +0000 (+0000)
Subject: optabs.c (prepare_cmp_insn): Let emit_library_call_value generate a pseudo reg that... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=24491a09505847e6e42b50917948ac5dc5780715;p=gcc.git

optabs.c (prepare_cmp_insn): Let emit_library_call_value generate a pseudo reg that receives the result of a...

	* optabs.c (prepare_cmp_insn): Let emit_library_call_value
	generate a pseudo reg that receives the result of a libcall.
	(prepare_float_lib_cmp): Likewise.

From-SVN: r57255
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index debee294ac5..34852fe2cc3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2002-09-17  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* optabs.c (prepare_cmp_insn): Let emit_library_call_value
+	generate a pseudo reg that receives the result of a libcall.
+	(prepare_float_lib_cmp): Likewise.
+
 2002-09-17  Steve Ellcey  <sje@cup.hp.com>
 
         * config/ia64/elf.h: Remove CPP_PREDEFINES.
diff --git a/gcc/optabs.c b/gcc/optabs.c
index 7ceec122ff1..0d13bb144f1 100644
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -3436,29 +3436,23 @@ prepare_cmp_insn (px, py, pcomparison, size, pmode, punsignedp, purpose)
 #endif
 	{
 #ifdef TARGET_MEM_FUNCTIONS
-	  emit_library_call (memcmp_libfunc, LCT_PURE_MAKE_BLOCK,
-			     TYPE_MODE (integer_type_node), 3,
-			     XEXP (x, 0), Pmode, XEXP (y, 0), Pmode,
-			     convert_to_mode (TYPE_MODE (sizetype), size,
-					      TREE_UNSIGNED (sizetype)),
-			     TYPE_MODE (sizetype));
+	  result = emit_library_call_value (memcmp_libfunc, NULL_RTX, LCT_PURE_MAKE_BLOCK,
+					    TYPE_MODE (integer_type_node), 3,
+					    XEXP (x, 0), Pmode, XEXP (y, 0), Pmode,
+					    convert_to_mode (TYPE_MODE (sizetype), size,
+							     TREE_UNSIGNED (sizetype)),
+					    TYPE_MODE (sizetype));
 #else
-	  emit_library_call (bcmp_libfunc, LCT_PURE_MAKE_BLOCK,
-			     TYPE_MODE (integer_type_node), 3,
-			     XEXP (x, 0), Pmode, XEXP (y, 0), Pmode,
-			     convert_to_mode (TYPE_MODE (integer_type_node),
-					      size,
-					      TREE_UNSIGNED (integer_type_node)),
-			     TYPE_MODE (integer_type_node));
+	  result = emit_library_call_value (bcmp_libfunc, NULL_RTX, LCT_PURE_MAKE_BLOCK,
+					    TYPE_MODE (integer_type_node), 3,
+					    XEXP (x, 0), Pmode, XEXP (y, 0), Pmode,
+					    convert_to_mode (TYPE_MODE (integer_type_node),
+							     size,
+							     TREE_UNSIGNED (integer_type_node)),
+					    TYPE_MODE (integer_type_node));
 #endif
 
-	  /* Immediately move the result of the libcall into a pseudo
-	     register so reload doesn't clobber the value if it needs
-	     the return register for a spill reg.  */
-	  result = gen_reg_rtx (TYPE_MODE (integer_type_node));
 	  result_mode = TYPE_MODE (integer_type_node);
-	  emit_move_insn (result,
-			  hard_libcall_value (result_mode));
 	}
       *px = result;
       *py = const0_rtx;
@@ -3483,14 +3477,8 @@ prepare_cmp_insn (px, py, pcomparison, size, pmode, punsignedp, purpose)
       if (unsignedp && ucmp_optab->handlers[(int) mode].libfunc)
 	libfunc = ucmp_optab->handlers[(int) mode].libfunc;
 
-      emit_library_call (libfunc, LCT_CONST_MAKE_BLOCK, word_mode, 2, x, mode,
-			 y, mode);
-
-      /* Immediately move the result of the libcall into a pseudo
-	 register so reload doesn't clobber the value if it needs
-	 the return register for a spill reg.  */
-      result = gen_reg_rtx (word_mode);
-      emit_move_insn (result, hard_libcall_value (word_mode));
+      result = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST_MAKE_BLOCK,
+					word_mode, 2, x, mode, y, mode);
 
       /* Integer comparison returns a result that must be compared against 1,
 	 so that even if we do an unsigned compare afterward,
@@ -4006,9 +3994,8 @@ prepare_float_lib_cmp (px, py, pcomparison, pmode, punsignedp)
   if (libfunc == 0)
     abort ();
 
-  result = gen_reg_rtx (word_mode);
-  emit_library_call_value (libfunc, result, LCT_CONST_MAKE_BLOCK,
-			   word_mode, 2, x, mode, y, mode);
+  result = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST_MAKE_BLOCK,
+				    word_mode, 2, x, mode, y, mode);
   *px = result;
   *py = const0_rtx;
   *pmode = word_mode;