Revert latest change to emit_group_store

This pessimizes on targets with insv instructions.

gcc/
	PR rtl-optimization/107762
	* expr.cc (emit_group_store): Revert latest change.

diff --git a/gcc/expr.cc b/gcc/expr.cc
index 78d35297e755216339078d5b2280c6e277f26d72..f8f5cc5a6ca67f291b3c8b7246d593c0be80272f 100644 (file)
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -2902,16 +2902,14 @@ emit_group_store (rtx orig_dst, rtx src, tree type ATTRIBUTE_UNUSED,
        dst = gen_reg_rtx (outer);
 
       /* Make life a bit easier for combine: if the first element of the
-        vector is the word (or larger) low part of the destination mode,
-        use a paradoxical subreg to initialize the destination.  */
+        vector is the low part of the destination mode, use a paradoxical
+        subreg to initialize the destination.  */
       if (start < finish)
        {
          inner = GET_MODE (tmps[start]);
          bytepos = subreg_lowpart_offset (inner, outer);
-         if (known_ge (GET_MODE_BITSIZE (inner), BITS_PER_WORD)
-             && known_eq (rtx_to_poly_int64 (XEXP (XVECEXP (src, 0,
-                                                            start), 1)),
-                          bytepos))
+         if (known_eq (rtx_to_poly_int64 (XEXP (XVECEXP (src, 0, start), 1)),
+                       bytepos))
            {
              temp = simplify_gen_subreg (outer, tmps[start], inner, 0);
              if (temp)
@@ -2929,10 +2927,9 @@ emit_group_store (rtx orig_dst, rtx src, tree type ATTRIBUTE_UNUSED,
        {
          inner = GET_MODE (tmps[finish - 1]);
          bytepos = subreg_lowpart_offset (inner, outer);
-         if (known_ge (GET_MODE_BITSIZE (inner), BITS_PER_WORD)
-             && known_eq (rtx_to_poly_int64 (XEXP (XVECEXP (src, 0,
-                                                            finish - 1), 1)),
-                          bytepos))
+         if (known_eq (rtx_to_poly_int64 (XEXP (XVECEXP (src, 0,
+                                                         finish - 1), 1)),
+                       bytepos))
            {
              temp = simplify_gen_subreg (outer, tmps[finish - 1], inner, 0);
              if (temp)