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Backport of http://gcc.gnu.org/ml/gcc-patches/2010-12/msg01096.html
This should fix the ICE found in samba
-Khem
Index: a/gcc/config/arm/arm.md
===================================================================
--- a/gcc/config/arm/arm.md (revision 167797)
+++ b/gcc/config/arm/arm.md (working copy)
@@ -4137,8 +4137,8 @@
})
(define_split
- [(set (match_operand:SI 0 "register_operand" "")
- (zero_extend:SI (match_operand:HI 1 "register_operand" "")))]
+ [(set (match_operand:SI 0 "s_register_operand" "")
+ (zero_extend:SI (match_operand:HI 1 "s_register_operand" "")))]
"!TARGET_THUMB2 && !arm_arch6"
[(set (match_dup 0) (ashift:SI (match_dup 2) (const_int 16)))
(set (match_dup 0) (lshiftrt:SI (match_dup 0) (const_int 16)))]
@@ -4244,8 +4244,8 @@
})
(define_split
- [(set (match_operand:SI 0 "register_operand" "")
- (zero_extend:SI (match_operand:QI 1 "register_operand" "")))]
+ [(set (match_operand:SI 0 "s_register_operand" "")
+ (zero_extend:SI (match_operand:QI 1 "s_register_operand" "")))]
"!arm_arch6"
[(set (match_dup 0) (ashift:SI (match_dup 2) (const_int 24)))
(set (match_dup 0) (lshiftrt:SI (match_dup 0) (const_int 24)))]
Index: a/gcc/testsuite/gcc.target/arm/pr46883.c
===================================================================
--- a/gcc/testsuite/gcc.target/arm/pr46883.c (revision 0)
+++ b/gcc/testsuite/gcc.target/arm/pr46883.c (revision 0)
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -march=armv5te" } */
+
+void bar (unsigned char *q, unsigned short *data16s, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ {
+ q[2 * i] =
+ (((data16s[i] & 0xFF) << 8) | ((data16s[i] >> 8) & 0xFF)) & 0xFF;
+ q[2 * i + 1] =
+ ((unsigned short)
+ (((data16s[i] & 0xFF) << 8) | ((data16s[i] >> 8) & 0xFF))) >> 8;
+ }
+}
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