extend restrictions on combining lshiftrt with insv to all shifts

From-SVN: r14057

diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 8c4f0b37bf6244dc9facfa493082d7c9ef684c43..fc1323a7b3ca4220d3ff3a3c3d36d682f1e904d7 100644 (file)
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -2102,7 +2102,7 @@
                         (match_operand:SI 2 "const_int_operand" "i"))
        (ashift:SI (match_operand:SI 3 "gpc_reg_operand" "r")
                   (match_operand:SI 4 "const_int_operand" "i")))]
-  ""
+  "(32 - (INTVAL (operands[4]) & 31)) >= INTVAL (operands[1])"
   "*
 {
   int shift = INTVAL (operands[4]) & 31;
@@ -2120,7 +2120,7 @@
                         (match_operand:SI 2 "const_int_operand" "i"))
        (ashiftrt:SI (match_operand:SI 3 "gpc_reg_operand" "r")
                     (match_operand:SI 4 "const_int_operand" "i")))]
-  ""
+  "(32 - (INTVAL (operands[4]) & 31)) >= INTVAL (operands[1])"
   "*
 {
   int shift = INTVAL (operands[4]) & 31;