toolchain/gcc: 4.3.x: fix for arm pr37436

See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37436 for details.

Reported-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

1 files changed, 86 insertions, 0 deletions

diff --git a/toolchain/gcc/4.3.3/999-4.3.3-arm-fix-for-bug-37436.patch b/toolchain/gcc/4.3.3/999-4.3.3-arm-fix-for-bug-37436.patch
new file mode 100644
index 000000000..99a016fbe
--- /dev/null
+++ b/toolchain/gcc/4.3.3/999-4.3.3-arm-fix-for-bug-37436.patch
@@ -0,0 +1,86 @@
+gcc svn 142778:
+
+PR target/37436
+* arm.c (arm_legitimate_index): Only accept addresses that are in
+canonical form.
+* predicates.md (arm_reg_or_extendqisi_mem_op): New predicate.
+* arm.md (extendqihi2): Use arm_reg_or_extendqisi_mem_op predicate
+for operand1.
+(extendqisi2): Likewise.
+(arm_extendqisi, arm_extendqisi_v6): Use arm_extendqisi_mem_op
+predicate for operand1.
+
+diff -Nura gcc-4.3.3.orig/gcc/config/arm/arm.c gcc-4.3.3/gcc/config/arm/arm.c
+--- gcc-4.3.3.orig/gcc/config/arm/arm.c	2008-06-11 07:52:55.000000000 -0300
++++ gcc-4.3.3/gcc/config/arm/arm.c	2009-05-21 16:06:45.000000000 -0300
+@@ -3769,6 +3769,7 @@
+       rtx xop1 = XEXP (x, 1);
+ 
+       return ((arm_address_register_rtx_p (xop0, strict_p)
++	       && GET_CODE(xop1) == CONST_INT
+ 	       && arm_legitimate_index_p (mode, xop1, outer, strict_p))
+ 	      || (arm_address_register_rtx_p (xop1, strict_p)
+ 		  && arm_legitimate_index_p (mode, xop0, outer, strict_p)));
+diff -Nura gcc-4.3.3.orig/gcc/config/arm/arm.md gcc-4.3.3/gcc/config/arm/arm.md
+--- gcc-4.3.3.orig/gcc/config/arm/arm.md	2007-09-04 01:44:47.000000000 -0300
++++ gcc-4.3.3/gcc/config/arm/arm.md	2009-05-21 16:06:45.000000000 -0300
+@@ -4199,7 +4199,7 @@
+ 
+ (define_expand "extendqihi2"
+   [(set (match_dup 2)
+-	(ashift:SI (match_operand:QI 1 "general_operand" "")
++	(ashift:SI (match_operand:QI 1 "arm_reg_or_extendqisi_mem_op" "")
+ 		   (const_int 24)))
+    (set (match_operand:HI 0 "s_register_operand" "")
+ 	(ashiftrt:SI (match_dup 2)
+@@ -4224,7 +4224,7 @@
+ 
+ (define_insn "*arm_extendqihi_insn"
+   [(set (match_operand:HI 0 "s_register_operand" "=r")
+-	(sign_extend:HI (match_operand:QI 1 "memory_operand" "Uq")))]
++	(sign_extend:HI (match_operand:QI 1 "arm_extendqisi_mem_op" "Uq")))]
+   "TARGET_ARM && arm_arch4"
+   "ldr%(sb%)\\t%0, %1"
+   [(set_attr "type" "load_byte")
+@@ -4235,7 +4235,7 @@
+ 
+ (define_expand "extendqisi2"
+   [(set (match_dup 2)
+-	(ashift:SI (match_operand:QI 1 "general_operand" "")
++	(ashift:SI (match_operand:QI 1 "arm_reg_or_extendqisi_mem_op" "")
+ 		   (const_int 24)))
+    (set (match_operand:SI 0 "s_register_operand" "")
+ 	(ashiftrt:SI (match_dup 2)
+@@ -4267,7 +4267,7 @@
+ 
+ (define_insn "*arm_extendqisi"
+   [(set (match_operand:SI 0 "s_register_operand" "=r")
+-	(sign_extend:SI (match_operand:QI 1 "memory_operand" "Uq")))]
++	(sign_extend:SI (match_operand:QI 1 "arm_extendqisi_mem_op" "Uq")))]
+   "TARGET_ARM && arm_arch4 && !arm_arch6"
+   "ldr%(sb%)\\t%0, %1"
+   [(set_attr "type" "load_byte")
+@@ -4278,7 +4278,8 @@
+ 
+ (define_insn "*arm_extendqisi_v6"
+   [(set (match_operand:SI 0 "s_register_operand" "=r,r")
+-	(sign_extend:SI (match_operand:QI 1 "nonimmediate_operand" "r,Uq")))]
++	(sign_extend:SI
++	 (match_operand:QI 1 "arm_reg_or_extendqisi_mem_op" "r,Uq")))]
+   "TARGET_ARM && arm_arch6"
+   "@
+    sxtb%?\\t%0, %1
+diff -Nura gcc-4.3.3.orig/gcc/config/arm/predicates.md gcc-4.3.3/gcc/config/arm/predicates.md
+--- gcc-4.3.3.orig/gcc/config/arm/predicates.md	2007-08-02 07:49:31.000000000 -0300
++++ gcc-4.3.3/gcc/config/arm/predicates.md	2009-05-21 16:06:45.000000000 -0300
+@@ -234,6 +234,10 @@
+        (match_test "arm_legitimate_address_p (mode, XEXP (op, 0), SIGN_EXTEND,
+ 					      0)")))
+ 
++(define_special_predicate "arm_reg_or_extendqisi_mem_op"
++  (ior (match_operand 0 "arm_extendqisi_mem_op")
++       (match_operand 0 "s_register_operand")))
++
+ (define_predicate "power_of_two_operand"
+   (match_code "const_int")
+ {