From: Claudiu Zissulescu <claziss@synopsys.com>
Date: Tue, 29 Dec 2020 11:30:04 +0000 (+0200)
Subject: arc: Don't use predicated vadd2 instructions in mov patterns.
X-Git-Tag: basepoints/gcc-12~1899
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=052870c3d1c962a0875c4debc066ccc3d68e7029;p=thirdparty%2Fgcc.git

arc: Don't use predicated vadd2 instructions in mov patterns.

Update movdi, movdf and mov vectors not to use predicated vadd2
instructions. vadd2 is used as a "fast" move in these patterns. This
fixes a number of failures in dejagnu.

gcc/
2020-12-29  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md (movdi_insn): Update pattern, no predicated
	vadd2 usage.
	(movdf_insn): Likewise.
	* config/arc/simdext.md (movVEC_insn): Likewise.

Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
---

diff --git a/gcc/config/arc/arc.md b/gcc/config/arc/arc.md
index ae08146bcafd..75c32f6d3e91 100644
--- a/gcc/config/arc/arc.md
+++ b/gcc/config/arc/arc.md
@@ -1341,7 +1341,7 @@ core_3, archs4x, archs4xd, archs4xd_slow"
     if (TARGET_PLUS_QMACW
 	&& even_register_operand (operands[0], DImode)
 	&& even_register_operand (operands[1], DImode))
-      return \"vadd2\\t%0,%1,0\";
+      return \"vadd2%?\\t%0,%1,0\";
     return \"#\";
 
     case 2:
@@ -1421,7 +1421,7 @@ core_3, archs4x, archs4xd, archs4xd_slow"
     if (TARGET_PLUS_QMACW
 	&& even_register_operand (operands[0], DFmode)
 	&& even_register_operand (operands[1], DFmode))
-      return \"vadd2\\t%0,%1,0\";
+      return \"vadd2%?\\t%0,%1,0\";
     return \"#\";
 
     case 4:
@@ -1450,7 +1450,7 @@ core_3, archs4x, archs4xd, archs4xd_slow"
    DONE;
   }
   [(set_attr "type" "move,move,move,move,load,store")
-   (set_attr "predicable" "no,no,yes,yes,no,no")
+   (set_attr "predicable" "no,no,no,yes,no,no")
    ;; ??? The ld/st values could be 16 if it's [reg,bignum].
    (set_attr "length" "4,16,8,16,16,16")])
 
diff --git a/gcc/config/arc/simdext.md b/gcc/config/arc/simdext.md
index d2fc309ea876..58651b5fcac6 100644
--- a/gcc/config/arc/simdext.md
+++ b/gcc/config/arc/simdext.md
@@ -1413,7 +1413,7 @@
        if (TARGET_PLUS_QMACW
            && even_register_operand (operands[0], <MODE>mode)
 	   && even_register_operand (operands[1], <MODE>mode))
-         return \"vadd2\\t%0,%1,0\";
+         return \"vadd2%?\\t%0,%1,0\";
        return \"#\";
 
      case 2:
@@ -1434,7 +1434,7 @@
    DONE;
   }
   [(set_attr "type" "move,multi,load,store")
-   (set_attr "predicable" "yes,no,no,no")
+   (set_attr "predicable" "no,no,no,no")
    (set_attr "iscompact"  "false,false,false,false")
    ])