[PATCH 2/3] i386: Pass ix86_expand_sse_unpack operands by value

[Richard Henderson <rth at redhat dot com>]

        * config/i386/i386.c (ix86_expand_sse_unpack): Split operands[]
        parameter into src and dest.
        * config/i386/sse.md (vec_unpacku_hi_<V124_AVX2>): Update call.
        (vec_unpacks_hi_<V124_AVX2>): Likewise.
        (vec_unpacku_lo_<V124_AVX2>): Likewise.
        (vec_unpacks_lo_<V124_AVX2>): Likewise.
        * config/i386/i386-protos.h: Update.


diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index 4e7469d..88de8ed 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -130,7 +130,7 @@ extern bool ix86_expand_fp_vcond (rtx[]);
 extern bool ix86_expand_int_vcond (rtx[]);
 extern void ix86_expand_vec_perm (rtx[]);
 extern bool ix86_expand_vec_perm_const (rtx[]);
-extern void ix86_expand_sse_unpack (rtx[], bool, bool);
+extern void ix86_expand_sse_unpack (rtx, rtx, bool, bool);
 extern bool ix86_expand_int_addcc (rtx[]);
 extern rtx ix86_expand_call (rtx, rtx, rtx, rtx, rtx, bool);
 extern void ix86_split_call_vzeroupper (rtx, rtx);
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index e23c418..7ae2060 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -20187,10 +20187,10 @@ ix86_expand_vec_perm (rtx operands[])
    true if we want the N/2 high elements, else the low elements.  */
 
 void
-ix86_expand_sse_unpack (rtx operands[2], bool unsigned_p, bool high_p)
+ix86_expand_sse_unpack (rtx dest, rtx src, bool unsigned_p, bool high_p)
 {
-  enum machine_mode imode = GET_MODE (operands[1]);
-  rtx tmp, dest;
+  enum machine_mode imode = GET_MODE (src);
+  rtx tmp;
 
   if (TARGET_SSE4_1)
     {
@@ -20252,20 +20252,20 @@ ix86_expand_sse_unpack (rtx operands[2], bool unsigned_p, bool high_p)
       if (GET_MODE_SIZE (imode) == 32)
 	{
 	  tmp = gen_reg_rtx (halfmode);
-	  emit_insn (extract (tmp, operands[1]));
+	  emit_insn (extract (tmp, src));
 	}
       else if (high_p)
 	{
 	  /* Shift higher 8 bytes to lower 8 bytes.  */
 	  tmp = gen_reg_rtx (imode);
 	  emit_insn (gen_sse2_lshrv1ti3 (gen_lowpart (V1TImode, tmp),
-					 gen_lowpart (V1TImode, operands[1]),
+					 gen_lowpart (V1TImode, src),
 					 GEN_INT (64)));
 	}
       else
-	tmp = operands[1];
+	tmp = src;
 
-      emit_insn (unpack (operands[0], tmp));
+      emit_insn (unpack (dest, tmp));
     }
   else
     {
@@ -20295,15 +20295,13 @@ ix86_expand_sse_unpack (rtx operands[2], bool unsigned_p, bool high_p)
 	  gcc_unreachable ();
 	}
 
-      dest = gen_lowpart (imode, operands[0]);
-
       if (unsigned_p)
 	tmp = force_reg (imode, CONST0_RTX (imode));
       else
 	tmp = ix86_expand_sse_cmp (gen_reg_rtx (imode), GT, CONST0_RTX (imode),
-				   operands[1], pc_rtx, pc_rtx);
+				   src, pc_rtx, pc_rtx);
 
-      emit_insn (unpack (dest, operands[1], tmp));
+      emit_insn (unpack (gen_lowpart (imode, dest), src, tmp));
     }
 }
 
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 2f361a6..c7c6392 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -7818,25 +7818,25 @@
   [(match_operand:<sseunpackmode> 0 "register_operand")
    (match_operand:VI124_AVX2 1 "register_operand")]
   "TARGET_SSE2"
-  "ix86_expand_sse_unpack (operands, false, false); DONE;")
+  "ix86_expand_sse_unpack (operands[0], operands[1], false, false); DONE;")
 
 (define_expand "vec_unpacks_hi_<mode>"
   [(match_operand:<sseunpackmode> 0 "register_operand")
    (match_operand:VI124_AVX2 1 "register_operand")]
   "TARGET_SSE2"
-  "ix86_expand_sse_unpack (operands, false, true); DONE;")
+  "ix86_expand_sse_unpack (operands[0], operands[1], false, true); DONE;")
 
 (define_expand "vec_unpacku_lo_<mode>"
   [(match_operand:<sseunpackmode> 0 "register_operand")
    (match_operand:VI124_AVX2 1 "register_operand")]
   "TARGET_SSE2"
-  "ix86_expand_sse_unpack (operands, true, false); DONE;")
+  "ix86_expand_sse_unpack (operands[0], operands[1], true, false); DONE;")
 
 (define_expand "vec_unpacku_hi_<mode>"
   [(match_operand:<sseunpackmode> 0 "register_operand")
    (match_operand:VI124_AVX2 1 "register_operand")]
   "TARGET_SSE2"
-  "ix86_expand_sse_unpack (operands, true, true); DONE;")
+  "ix86_expand_sse_unpack (operands[0], operands[1], true, true); DONE;")
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;
-- 
1.7.10.2