diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 510f1bcb1e2..675448ff36f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2007-03-13  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	* pa.md (vdepi_ior): Don't allow zero length deposit.  Likewise for
+	two unamed patterns.
+	
 2007-03-13  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.opt (mcx16, msahf): New options.
diff --git a/gcc/config/pa/pa.md b/gcc/config/pa/pa.md
index 32276f17f2d..5ea229916f4 100644
--- a/gcc/config/pa/pa.md
+++ b/gcc/config/pa/pa.md
@@ -6974,7 +6974,7 @@
 				     (match_operand:SI 2 "register_operand" "q")))
 		(match_operand:SI 3 "register_operand" "0")))]
   ; accept ...0001...1, can this be generalized?
-  "exact_log2 (INTVAL (operands[1]) + 1) >= 0"
+  "exact_log2 (INTVAL (operands[1]) + 1) > 0"
   "*
 {
   int x = INTVAL (operands[1]);
@@ -7073,7 +7073,7 @@
 				     (match_operand:DI 2 "register_operand" "q")))
 		(match_operand:DI 3 "register_operand" "0")))]
   ; accept ...0001...1, can this be generalized?
-  "TARGET_64BIT && exact_log2 (INTVAL (operands[1]) + 1) >= 0"
+  "TARGET_64BIT && exact_log2 (INTVAL (operands[1]) + 1) > 0"
   "*
 {
   int x = INTVAL (operands[1]);
@@ -7269,7 +7269,7 @@
 	(and:SI (ashift:SI (match_operand:SI 1 "register_operand" "r")
 			   (match_operand:SI 2 "const_int_operand" ""))
 		(match_operand:SI 3 "const_int_operand" "")))]
-  "exact_log2 (1 + (INTVAL (operands[3]) >> (INTVAL (operands[2]) & 31))) >= 0"
+  "exact_log2 (1 + (INTVAL (operands[3]) >> (INTVAL (operands[2]) & 31))) > 0"
   "*
 {
   int cnt = INTVAL (operands[2]) & 31;